Mathematics High School

Can anyone help me out?

Answers

Answer 1

Answer:

X=20

Step-by-step explanation:

(3x+10)+(6x-10)=180

9x=180

180/9=20

X=20

Related Questions

A dress is marked 30% off. The original price was $80. How much is saved?

Answers

Multiply the original price by the percentage off:

80 x 0.30 = 24.00

they saved $24.00

If 1 serving of stir fry uses 3/5 cup of rice , how many cups are in 12 servings

Answers

Answer:

36/5 cups of rice.

Step-by-step explanation:

12x3/5 is the equation. 36/5 is the answer, which is 7 1/5 or 36/5

HELP I NEED THIS FOR TODAY!! 100 points

Two water balloons were launched into the air at different moments and collided. The water balloons were modeled by the quadratic functions: y = −3x2 + 24x + 3 and y = −4x2 + 25x + 15, where y represents the height in meters and x represents the time in seconds after the launch. What is the time, in seconds, that the balloons collided at the highest point?

3.25 seconds
3.50 seconds
3.75 seconds
4.00 seconds

What are the solutions to the following system of equations?

x − y = 6
y = x2 −6

(0, −6) and (7, 1)
(0, −6) and (1, −5)
(0, −6) and (9, 3)
(0, −6) and (−9, 3)

Based on the graphs of the equations y = x + 7 and y = x2 – 3x + 7, the solutions are located at points:

(4, 11) and (0, 7)
(4, 11) and (–7, 0)
(–7, 0) and (1.5, 4.75)
(1.5, 4.75) and (0, 7)

Which system of equations is represented by the graph?

Graph of a quadratic function intersecting a linear function at point 2 comma 0.

y = x2 + 3x + 2
x + y = 2
y = x2 − 3x + 2
x − y = 2
y = x2 − 3x + 2
x − y = 3
y = x2 − 3x + 2
x + y = 3

Answers

The solutions of the given equations are given by equating the

variables to gives;

First part; 4.00 secondsSecond part; (0, -6) and (1, -5)Third part; (4, 11) and (0, 7)Fourth part: y = x² + 3·x + 2; x + y = 2

How can the (common) solution be found?

First part;

The given functions are;

y = -3·x² + 24·x + 3, and y = -4·x² + 25·x + 15

When the balloons collided, we have;

The height are equal, which gives;

y = y

-3·x² + 24·x + 3 = -4·x² + 25·x + 15

-3·x² + 24·x + 3 - (-4·x² + 25·x + 15) = x² - x - 12 = 0

Which gives;

x² - x - 12 = (x - 4) × (x + 3) = 0

x = 4, and x = -3

The time at which the balloon collide at the highest point is therefore;

At the time, x = 4.00 seconds

Second part;

The given system of equations are;

x - y = 6

y = x² - 6

y = x - 6

Which gives;

x - 6 = x² - 6

x = x²

Which gives;

x = 0 or x = 1

Similarly, we have;

x = y + 6

Which gives;

y = (y + 6)² - 6

y² + 11·y + 30 = 0

(y + 5)·(y + 6) = 0

Which gives;

y = -5, or y = -6

When y = -5, we have; x = -5 + 6 = 1

The solution are therefore;

(0, -6) and (1, -5)

Third part;

The equations are; y = x + 7 and y = x² - 3·x + 7

At the solution, the u-values are equal, which gives;

y = y

x + 7 = x² - 3·x + 7

x² - 3·x + 7 - (x + 7) = 0

x² - 4·x = 0

x·(x - 4) = 0

x = 4, or x = 0

When x = 4, y = 4 + 7 = 11

When x = 0, y = 0 + 7 = 7

The solutions are located at points;

(4, 11) and (0, 7)

Fourth part;

Given that the point of intersection of the line and the quadratic function

is the point (2, 0), we have;

On the linear function, when y = 0, x = 2

The possible linear function functions is therefore;

x + y = 2

From the quadratic function that accompanies the above linear function, we have;

y = x² + 3·x + 2

When x = 0, y = 0² + 3×0 + 2 = 2

Therefore;

The correct option is; y = x² + 3·x + 2, and x + y = 2

Learn more about the solutions of equations here:

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Nina is older than Wayne but younger than Helen. Tony is older than Helen. Who is older, Tony or Wayne?

Answers

Answer:

tony

Step-by-step explanation:

tony is older than him

PLS HELP FAST

A plane in which the coordinates of a point are its distances from two intersecting perpendicular lines called axes.

Which term is defined in the above statement?

Question 6 options:

Air Plane

Coordinate Plane

Quadrant

Ordered Pair

Answers

Answer:

Coordinate plain

Step-by-step explanation:

airplane... i think you know what that is, and quadrant is the squares sectored off by a coordinate plane.

Round 83,461 to the nearest thousand.

Answers

Answer:

See below.

Step-by-step explanation:

83,461

This is the thousand place.

5 and above is rounded up, 4 and below is rounded down.

83,000 is the answer.

-hope it helps

The area of the rectangle above is____square units.

Answers

Answer:

66 units²

Step-by-step explanation:

Area of Rectangle = [tex]l * w[/tex]. We're given the length as 11 units and the width as 6 units.

[tex]11*6[/tex] [tex]66[/tex]

Therefore, the answer is 66 units².

Plssss help if you know how to do it Plss

Answers

yes they are similar, one is 3/4ths of the other for all dimensions if you match it up right

A recent survey of 8,000 high school students found that the mean price of a prom dress was $195. 00 with a standard deviation of $12. 0. Alyssa thinks that her school is more fashion conscious and that students spent more than $195. 0. She collected data from 20 people in her high school and found that the average price spent on a prom dress was $208. 0. Which of the following are the correct null hypothesis and alternate hypothesis? H0: Mu = 195; Ha: Mu greater-than 195 H0: Mu not-equals 195; Ha: Mu = 208 H0: Mu = 195; Ha: Mu not-equals 195 H0: Mu = 195; Ha: Mu greater-than-or-equal-to 208.

Answers

The correct null hypothesis and alternate hypothesis will be

[tex]H_{0} =\mu=195\\H_{a} =\mu > 195[/tex]

What will be the correct null hypothesis and alternate hypothesis?

It is given that

The mean price of a prom dress was $195. 00 with a standard deviation of $12. 0

Given that Alyssa thinks that her school is more fashion-conscious and that students spent more than $195.00.

She collected data from 20 people in her high school and found that the average price spent on a prom dress was $208.00.

Since she wants to check whether the sample mean [tex]\mu[/tex] is the same as the population mean [tex]\mu[/tex] = 195

[tex]H_{0} =\mu=195\\H_{a} =\mu > 195[/tex]

(Right hypothesis test)

Thus the correct null hypothesis and alternate hypothesis will be

[tex]H_{0} =\mu=195\\H_{a} =\mu > 195[/tex]

To learn more about null hypotheses follow

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Answer: OPTION A

Step-by-step explanation:

I need to find the answer for 21.60÷1.35

Answers

Answer: 16

Step-by-step explanation: 21.60 / 1.35 = 16

The result of the division 21.60÷1.35 is: 16.

To find the answer for 21.60 ÷ 1.35, you can perform the division operation:

21.60 ÷ 1.35

Divide 21.60 by 1.35:

21.60 ÷ 1.35 ≈ 16

The result of 21.60 ÷ 1.35 is approximately 16.

When dividing decimals, it's essential to align the decimal points and then perform the division as you would with whole numbers.

In this case, dividing 21.60 by 1.35 gives us an approximate quotient of 16.

Hence, The result of the division 21.60÷1.35 is: 16.

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8. Jenny is getting dressed for school,
• She has 2 pairs of black pants, 1 pair of brown pants, and 2 pairs of blue pants in her
closet
. She also has 2 pink T-shirts and blue T-shirts in her closet.
• Without looking, Jonny pulls out one pair of pants and one T-shirt from her closet.
What is the probability that Jenny pulls out a pair of black pants and a blue T-shirt?

Answers

Answer:

[tex]\huge\boxed{\bf\: Probability = \frac{4}{9}}[/tex]

Step-by-step explanation:

According to the given information,

Pairs of black pants = 2Pair of brown pants = 1Pairs of blue pants = 2

Then, total pairs of pants = 2 + 1 + 2 = 5

Similarly,

Pink T-shirts = 2Blue T-shirts = 2

Then, total number of T-shirts = 4

This gives us the total nunber of clothing articles with Jenny, i.e.,

Total pairs of pants + Total number of T-shirts

= 5 + 4

= 9

Now, the probability of pulling out a pair of black pants & a blue T-shirt will be:

Total pairs of black pants + Total nunber of blue T-shirts/Total clothing articles

= 2 + 2 / 9

= 4/9

[tex]\rule{150}{2}[/tex]

help please im in class rn

Answers

Answer:

17 is the total perimeter of the shape on the perimeter grid

4 consecutive integers add up to 2 what are the integers

Answers

Answer:

-1,0,1,2

Step-by-step explanation:

-1 + 0 = -1

-1 + 1 = 0

0+ 2 = 2

Have a great day :)

pls mark brainliest

Answer:

-1, 0, 1, and 2

Step-by-step explanation:

Those are the 4 consecutive integers.

Hope it helps!
Ava-

F (x) = -x f(0) = ..............
Find value of x

Answers

Answer:

Step-by-step explanation:

Its equal to something multiplied by 0 so it is 0

At a fabric store, fabrics are sold by the yard. A dressmaker spent $36.35 on 4.25 yards of silk and cotton fabrics for a dress. Silk is $16.90 per yard and cotton is $4 per yard.
Let 'x' represent the number of yards of silk and 'y' represent the number of yards of cotton.
Here is a system of equations that represent the constraints in the situation.
x+y=4.25
16.90x+4y=36.35
Find the solution to the system of equations. You may use any method you want, but you must explain your reasoning and methods fully.

Answers

Answer:

Step-by-step explanation:

The yards of silk bought is 1.49 yards and the yard of cotton bought is 2.76 yards.

The two equations are known as simultaneous equation. They would be solved using elimination method.

x + y = 4.25 equation 1

16.90x + 4y = 36.25 equation 2

where:

x = yards of silk bought

y = yards of cotton bought

In order to determine the value of x, multiply equation 1 by 4.

4x + 4y = 17 equation 3

Subtract equation 3 from 2

19.25 = 12.90x

Divide both sides of the equation by 12.90

x = 1.49 yards

In order to determine the value of y, substitute for x in equation 1

1.49 + y = 4.25

y = 4.25 - 1.49

y = 2.76 yards

Answer:

Step-by-step explanation:

The yards of silk bought is 1.49 yards and the yard of cotton bought is 2.76 yards.

The two equations are known as simultaneous equation. They would be solved using elimination method.

x + y = 4.25 equation 1

16.90x + 4y = 36.25 equation 2

where:

x = yards of silk bought

y = yards of cotton bought

In order to determine the value of x, multiply equation 1 by 4.

4x + 4y = 17 equation 3

Subtract equation 3 from 2

19.25 = 12.90x

Divide both sides of the equation by 12.90

x = 1.49 yards

What is the general shape of the data? skewed symmetric constant many peaks and valleys

Answers

Answer:

Skewed is the correct answer!

Step-by-step explanation:

~Hope this helps! :)

A graph is a way to represent a lot of data in a visual format. The shape of this graph is best described as skewed.

What is a graph?

A graph is a way to represent a lot of data in such a visual format that it is easy for the user to understand the complete information in one go. Usually, the line of the graph is a function that follows the graph.

here, we have,

A.) A symmetric graph is a graph in which the left half of the graph looks like the mirror image of the right half of the graph. Since the graph has no symmetry it is not a symmetric graph.

B.) Skewness is a distortion or asymmetry in a set of data that deviates from the symmetrical bell curve, or normal distribution. The curve is said to be skewed if it is displaced to the left or right. As we can see that the shape of the graph is the left tilted bell shape.

C.) A constant graph is a graph in which the value of each bar lies on the same horizontal value. Since the shape of the graph is not a horizontal line, it is not a constant shape graph.

D.) When a graph has Peak and Valleys in a graph, the values of the graph are different from each other, therefore, forming peaks and valleys in a graph, which looks like a spline. Since the value of the graph is decreasing towards the right side of the graph. Therefore, the graph of the shape is not of a peak and valley.

Thus, the shape of this graph is best described as skewed.

Learn more about Graph:

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Juan is clearing land in the shape of a circle to plant a new tree. The diameter of the space he needs to clear is 52 inches. By midday, he has cleared a sector of the land cut off by a central angle of 140 . What is the arc length and the area of land he has cleared by midday?

Answers

The central angle of 140 degrees illustrates the degree measure of the arc

The arc length cleared is 63.54 inches and the area of the land cleared is 826.00 square inches

How to determine the arc length

The given parameters are:

Central angle = 140 degrees

Diameter = 52 inches

The length of the arc is then calculated s:

[tex]L = \frac{\theta}{360} * \pi d[/tex]

Substitute known values in the equation

[tex]L = \frac{140}{360} * 3.142 * 52[/tex]

Evaluate the products

[tex]L = \frac{22873.76}{360}[/tex]

Evaluate the quotient

[tex]L = 63.54[/tex]

Hence, the arc length cleared is 63.54 inches

How to determine the area of the land cleared

The area is calculated s:

[tex]A = \frac{\theta}{360} * \pi (d/2)^2[/tex]

Substitute known values in the equation

[tex]A = \frac{140}{360} * 3.142 * (52/2)^2[/tex]

Evaluate the products

[tex]A = \frac{297358.88}{360}[/tex]

Evaluate the quotient

[tex]A = 826.00[/tex]

Hence, the area of the land cleared is 826.00 square inches

Answers

Based on the cost of Mr. Ingle's car and the depreciation rate, the value after 7 years will be $20,327.62.

What would be the value after 7 years?

This can be found by the formula:

= Cost of car x ( 1 - depreciation rate) ^ number of years given

Solving gives:

= 42,500 x (1 - 10%)⁷

= 42,500 x 0.4782969

= $20,327.62

Find out more on depreciation at https://brainly.com/question/25297296.

A triangle has two angles that measure 85 and 23. Which has to be the measure of the third angle?

95
∘

72
∘

157
∘
Please help me please please please

Answers

Step-by-step explanation:

Given :-

A triangle have two angles that measures 85° and 23°.

To Find :-

Measure of the third angle.

Solution :-

Let the measure of the third angle of the triangle be x.

As we know that,

The sum of all three sides of a triangle is 180° which is the angle sum property of triangle.

Therefore,

[tex] \sf \longrightarrow {\angle{A}\ +\ \angle{B}\ +\ \angle{C}\ =\ 180^{\circ}} [/tex]

[tex] \sf \longrightarrow {85^{\circ}\ +\ 23^{\circ}\ +\ x\ =\ 180^{\circ}} [/tex]

[tex] \sf \longrightarrow {108^{\circ}\ +\ x\ =\ 180^{\circ}} [/tex]

[tex] \sf \longrightarrow {x\ =\ 180^{\circ}\ -\ 108^{\circ}} [/tex]

[tex] \bf \longrightarrow {\underline{x\ =\ 72^{\circ}}}\ \bigstar [/tex]

∴ Hence, the measure of the third angle of the triangle is 72°.

What is the earliest known reference to pi in history.

Answers

Answer:

im sorry i dont know what is the history

WILL GIVE BRAINLIEST IF CORRECT PLEASE ANSWER!!!!!!

Solve for x. Round to the nearest tenth, if necessary.

Answers

Answer: 20.4

Step-by-step explanation: U = 74°

Cos 74 = x/74

x = 74 * Cos 74

x = 20.39716433 or 20.4

14. Danny works part-time at Tom's Toy Store. He
worked 84 hours in May and June. Danny worked
one-third as many hours in May as in June.
How many hours did he work in each month?

Answers

Answer:

21 hours in May, 63 hours in June

Step-by-step explanation:

Set up equationsm - May, j - Junem + j = 84m = 1/3jSolve by substitution, fin the value of j1/3j + j = 844/3j = 84j = 84*3/4j = 63Find mm + 63 = 84m = 84 - 63m = 21

May be y and June be x

x+y=84y=1/3x

Now

Put y from (2) in eq(1)

x+1/3x=843x+x)3=844x/3=844x=3(84)x=3(21)x=63

Find y

y=1/3(63)y=21

PLEASE HELP ME ((UNIT RATES)) 20 points again, brainliest will be given.

Answers

I think the answer is A sorry if it's wrong

Flag question: Question 1
Question 14 pts
Is this ordered pair a solution for the equation?

(4, 11)

y = x + 7

Group of answer choices

True

False

Answers

answer

False

the x and y of Y=x+7 is x=-7 and y=7 not 100% sure pls someone recheck

12(x+3y-6z)
please expand the answer!!!!

Answers

6. [tex]4(-8a-5b+3) = -32a-20b+12 = 12-32a-20b\\[/tex]

8. [tex]12(x+3y-6z) = 12x+36y-72z[/tex]

Hope that helped!

Which of the following describes the function shown in the table below? x y -4 16 -1 2 2 0. 25 4 0. 0625 5 0. 03125 exponential, there is a constant rate of growth exponential, there is a constant rate of decay or decrease quadratic, there is a second degree change in the y-values quadratic, there is a constant difference between consecutive y-values.

Answers

The given table is an example of constant exponential decay.

It is given that

X Y

-4 16

-1 2

2 0.25

4 0.0625

5 0.03125

What is an exponential function?

An exponential function is a relation of the form y = a^x, with the independent variable x ranging over the entire real number line as the exponent of a positive number a.

The y-value at -4 is 16 while the y-value at -1 is 2, a decrement of 1/8 times for an increment in x-value by 3

Again, the y-value at 2 is 0.25 while the y-value at 5 is 0.03125, a decrement of 1/8 times for an increment in x-value by 3.

In both cases, the rate of decrement is constant.

So we can say that this is an example of constant exponential decay.

We can also see this behavior from the attached graph.

Therefore, the given table is an example of constant exponential decay.

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A cup of tea costs $3 at a local cafe. Alan and his wife, Patty, have a coupon for $1 off their order. Alan says the expression 3t – 1 represents the cost for t cups of tea. Patty says the expression 3t + (–1) represents the cost. Are their expressions equivalent? Explain

Answers

Answer

Step-by-step explanation:

how do I delete this answer

Answer: YAS

Step-by-step explanation:

write an inequality that shows that vin total savings for the month are at least $100

Answers

Answer:

v >_100

Step-by-step explanation:

there is a line underneath the sign it won't let me write that so I just wanted to let u know.

HELP MEEEEE IM DESPERATE 30 POINTS!!!!!!
find x

Answers

Answer:

Step-by-step explanation:

the measure of a secant- tangent angle is half the difference of the intercepted arcs, then

[tex]\frac{1}{2}[/tex] (154 - (12x + 2) ) = 6x + 4 ( multiply both sides by 2 to clear the fraction )

154 - 12x - 2 = 12x + 8 , that is

152 - 12x = 12x + 8 ( subtract 12x from both sides )

152 - 24x = 8 ( subtract 152 from both sides )

- 24x = - 144 ( divide both sides by - 24 )

x = 6

What are all the real zeros of y=(x-20)^2 +5

Please show step by step I'm so lost!!

Answers

Answer:

No real zeros for the function.

Explanation:

zero of a function f, if f(r) = 0

solve:

[tex]\sf y=(x-20)^2 +5[/tex]

so when f(y) = 0

[tex]\hookrightarrow \sf (x-20)^2 +5 = 0[/tex]

[tex]\hookrightarrow \sf (x-20)^2 = -5[/tex]

[tex]\hookrightarrow \sf (x-20) = \sqrt{-5}[/tex]

[tex]\hookrightarrow \sf x = \pm \sqrt{-5} +20[/tex]

[tex]\hookrightarrow \sf x = \sqrt{-5} +20, \ \sf x = -\sqrt{-5} +20[/tex]

check:

[tex]\hookrightarrow f \sf (\sqrt{-5} +20) = Not \ applicable[/tex], [tex]f \sf (-\sqrt{-5} +20) = Not \ applicable[/tex]

Answer:

No real zeros.

Step-by-step explanation:

Given... y = [tex](x-20)^{2} +5[/tex]

Since above equation has no real real value, there are no zeros.

But complex zeros are:

[tex](x-20)^{2} +5=0[/tex]

[tex](x-20)^{2} =-5[/tex]

I was late so mark the person above me Brainliest!

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