Mathematics High School

What is the value of 9 + 21 (13 + 5)?
287
395
387
540

Answers

Answer 1

Answer: 387

Step-by-step explanation:

Answer 2
The answer will be 387

Related Questions

Help me out please !!!

Answers

Answer:

rate of change = 1.75 over 1 or just 1.75

Step-by-step explanation:

this represents the cost of each cantaloupe. This basically means that each cantaloupe is $1.75.

What is the median of the follow 6 scores ? 64 , 72, 85 , 80 , 72 , 89

Answers

Answer:

76

Step-by-step explanation:

median is the number in the very center of the list of numbers in order:

64, 72, 72, 80, 85, 89

to find the one in the middle we take away the numbers from both ends:

72, 72, 80, 85

72, 80

since there are two numbers in the middle we’ll find the average

(72+80)/2

152/2

76

Answer:

76

Step-by-step explanation:

Median means middle

so we are looking for the middle number

place the numbers in order and look for the number thats in the middle

64, 72, 72, 80, 85, 89

72 and 80 are both the middle numbers.

Therefore, we add 72+80 and then divide by 2

72+80= 152

152/2= 76

Final answer: 76 is the median

The perimeter of a square with side length s

Answers

Answer:

4s

Step-by-step explanation:

The perimeter of a square is 4 times it's side length.

Formula for a perimeter of a square: [tex]4s[/tex]

s - side length

Hope this helps.

WILL GIVE BRAINLIST!!!!! Select the correct answer. Which graph represents this function? f (x) = 1/2x -5 A. B. C. D.

Answers

Answer:

B

Step-by-step explanation:

The y-int. is -5 like the equation and the slope is positive

5. Cardi B is buying packs of gum from the grocery store. The table shows the total cost of the gum based on the number of packs bought. Which of the following represents the constant of proportionality?

Answers

let me see the graph.

i need help ASAP ill mark u a brainiest i need an answer thats it

Answers

Answer:

I think it's 7.5 correct me if i'm wrong

Step-by-step explanation:

7.5 is half of 15

Use the midsegement theorem

Can someone help me please?

Answers

Answer:

about 6000π

Step-by-step explanation:

Hope it helps :)
Here is the working

write (x+7)(x−2) as a sum

Answers

Answer:

x^2+5x-14

Step-by-step explanation:

you multiply both equations so that you get:

x^2-2x+7x-14

and then you simplify it to:

x^2+5x-14

If you found this helpful please give it a thanks

I would also appreciate it if you give me a brainliest

7/2x+1/2x=6+5/2x pls help

Answers

Answer:

4

Step-by-step explanation:

7/2+1/2=8/2

8/2=6=5/2

8/2-5/2=3/2

3/2=6

3/2=1.5

6/1.5=4

Find the length of the diagonal of a square with perimeter 56

Answers

Answer:

About 19.8

Step-by-step explanation:

First find the side lengths. In this example, 56/4=14

Next use the Pythagorean theorem, to us it, here's the formula a squared plus b squared equals c squared. For this example use 14 squared plus 14 squared which equals 392.

Finally take the square root of 392 because we still need to take the squared out in c. The square root of 392 rounded to the nearest tenth is 19.8.

find the zeros of the polynomial x square-3 and verify the reationship between the zeros and the coefficient.​

Answers

Answer:

√3, and -√3

Step-by-step explanation:

to find the zeros or roots of the polinomial x²-3 make it equal to zero and solve for x

x²-3=0 add 3 to both sides to isolate x

x² = 3 squareroot both sides

√x²= √3

x= ±√3 are the two zeros

The points (5, n) and (4, -4) fall on a line with a slope of 7. What is the value of n?
n =
Submit
Work it out

Answers

Answer:

Step-by-step explanation:

The slope of a line can be calculated:

[tex]m = \frac{y_2-y_1}{x_2-x_1}\\[/tex]

We know that the slope is 7, so we want to solve for [tex]y_2[/tex]

[tex]\frac{n-(-4)}{5-4} = 7\\\frac{n+4}{1} = 7\\n+4 = 7\\n = 3[/tex]

Please help!

If we write [tex]\sqrt{2} + \frac{1}{\sqrt{2}} + \sqrt{3} + \frac{1}{\sqrt{3}}[/tex] in the form [tex]\frac{a \sqrt{2} + b \sqrt{3}}{c}[/tex], such that [tex]a[/tex], [tex]b[/tex], and [tex]c[/tex] are positive integers and [tex]c[/tex] is as small as possible, then what is [tex]a+b+c[/tex]?

Answers

Answer:

[tex]a+b+c=9+8+6=23[/tex]

Step-by-step explanation:

Let’s first simplify our expression. We have:

[tex]\displaystyle {\sqrt2+\frac{1}{\sqrt2}+\sqrt3+\frac{1}{\sqrt{3}}[/tex]

For the second term, multiply both the numerator and denominator by √2. This yields:

[tex]\displaystyle \frac{1}{\sqrt{2}}\cdot\frac{\sqrt{2}}{\sqrt{2}}=\frac{\sqrt{2}}{2}[/tex]

Similarly, for the fourth term, multiply both the numerator and denominator by √3. This yields:

[tex]\displaystyle\frac{1}{\sqrt{3}}\cdot\frac{\sqrt{3}}{\sqrt{3}}=\frac{\sqrt{3}}{3}[/tex]

Hence, our expression is now:

[tex]\displaystyle =\sqrt{2}+\frac{\sqrt{2}}{2}+\sqrt{3}+\frac{\sqrt{3}}{3}[/tex]

Let’s combine them. First, we will need common denominators.

Our denominators are 2 and 3. So, our common denominator will be its LCM.

The LCM of 2 and 3 is 6.

Hence, let’s make each term’s denominator 6.

For the first term, we can multiply both layers by 6. Hence:

[tex]\displaystyle \sqrt{2}=\frac{6\sqrt{2}}{6}[/tex]

For the second term, we can multiply both layers by 3. Hence:

[tex]\displaystyle \frac{\sqrt{2}}{2}=\frac{3\sqrt{2}}{6}[/tex]

For the third term, we can multiply both layers by 6. Hence:

[tex]\displaystyle \sqrt{3}=\frac{6\sqrt{3}}{6}[/tex]

And for the last term, we can multiply both layers by 2. Hence:

[tex]\displaystyle \frac{\sqrt{3}}{3}=\frac{2\sqrt{3}}{6}[/tex]

So, our expression is:

[tex]\displaystyle =\frac{6\sqrt{2}}{6}+\frac{3\sqrt{2}}{6}+\frac{6\sqrt{3}}{6}+\frac{2\sqrt{3}}{6}[/tex]

Add:

[tex]\displaystyle =\frac{6\sqrt{2}+3\sqrt{2}+6\sqrt{3}+2\sqrt{3}}{6}[/tex]

Combine like terms:

[tex]\displaystyle=\frac{9\sqrt{2}+8\sqrt{3}}{6}[/tex]

This cannot be simplified. So, c is as small as possible.

Hence: a=9, b=8, and c=6.

Therefore:

[tex]a+b+c=9+8+6=23[/tex]

A recipe calls for ½ cup of flour to make 8 servings. How many cups of flour are needed to make 20 servings?

Answers

Answer:

20/8 = 2.5

1/2+1/2+1/2=

1  1/2

Step-by-step explanation:

Ur welcome:)

solve.
1/x = 1/5x = x-1/5x

Answers

Answer:

5=x=x-1

Step-by-step explanation:

Mutiply each equation by 5x

You will get 5=x=x-1

PLEASE PLEASE PLEASE HELP I WILL GIVE XTRA POINTS AND BRAINALIST TO FIRST PERSON

Answers

Answer:

the answer is A because it has all numbers less than 15

Step-by-step explanation:

Select all of the numbers that are greater than -5.

1.) 1.3
2.) -6
3.) -12
4.) -1
5.) -4

Answers

all the numbers greater than -5 are

1.) 1.3

4.) -1

5.) -4

Answer:

1.3,-1, and -4

Evaluate 6h when h=8h,

Answers

U multiply 6 times 8 which is equal to 48

Answer:

48

Step-by-step explanation:

First you know that h=8h cancel out the h's and your left with 8. Next find out 6h is. We know that h is 8 so we can plug it in. Also when a number is right by a variable that means multiply example: 5d=5xd

6h=6xh

6x8

Now we multiply 6 times 8

Warning: If you don't know your multiplication facts you might want to either:

1. Count or add 8 six times 8+8+8+8+8+8. or add six 8 times.

2. or use a calculator :) Always helpful :D

The answer is: 48  Pls pick me for brainliest! Hope this helped! Have a great day!

Martin correctly answered 90% of the questions on a math test that contained exactly 40 questions. How many of the questions did he answer incorrectly? explain

A) 4
B) 10
C) 44
D) 90

Answers

Answer:

A. 4

Step-by-step explanation:

90% of 40 is = 36

40 - 36 = 4

Since he got 36 right out of 40, he got 4 wrong.

I NEED HELL LIKE RIGHT NOW !!!

Which equation represents the graph?

Answers

Answer:

ummm im pretty sure its d

Step-by-step explanation:

Answer:

im pretty sure its last option y=2x

Step-by-step explanation:

on the graph it touches all even numbers

What's the opposite of -1.5 and 3/4?

Answers

Answer:

1.5

- 3/4

Step-by-step explanation:

To find the opposite of a number, you just have to either add or remove a negative sign.

- 1.5 is negative, so the opposite of negative 1.5 is positive 1.5 or 1.5

3/4 is positive, so the opposite of positive 3/4 is negative 3/4 or - 3/4

I Hope That This Helps! :)

Answer:

1.5

- 3/4

Step-by-step explanation: CREDIT TO GUY ABOVE!

Select all the expressions that have a value of 180 when b = 4.
A 87b−179+957÷87
B 33b12
C b2+120
D 51b−24
E 11b+187−2,756÷13

Answers

Answer:

A & D

Explanation:

The expression 51b-24 has a value of 180 when b = 4. Therefore, option D is correct.

We need to select all the expressions that have a value of 180 when b = 4.

What is the expression?

In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

Now, substitute b=4 in option A.

That is 87b−179+957÷87=87×4−179+957÷87=12.94.

Substitute b=4 in option B.

33b12=33×4×12=1584

Substitute b=4 in option C.

b²+120=4²+120=136

Substitute b=4 in option D.

51b-24=51×4-24=204-24=180

Substitute b=4 in option E.

11b+187−2,756÷13=11×4+187−2,756÷13=-194.23

Therefore, the expression 51b-24 has a value of 180 when b = 4.

To learn more about the expression visit:

https://brainly.com/question/14083225.

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Select all equations that can result from adding these two equations or subtracting one from the other.
x+y=12
3x-5y=4 PLZ
HELP QUICK I WILL GIVE BRAINLYIEST

Answers

Answer:

If the equation is in the form, ax + b = c, where x is the variable, you can solve the equation as before. First “undo” the addition and subtraction, and then “undo” the multiplication and division. Solve 3y + 2 = 11. Subtract 2 from both sides of the equation to get the term with the variable by itself.

Step-by-step explanation:

hope this helps, sorry if late

whats an eqaution to this? please helppp

Answers

Y=-1/4+4

-1/4 is the slope and the 4 is the y-intercept (where the line touches the y-axis)

I hoped this help's!!!

Answer:

y=-1/4x+4

Step-by-step explanation:

Since the line is decreasing the slope in down 1 and to the right 4 and the y-intercept is 4. Hope this helps:)

. Graph f(x) = 6x + 2 and g(x) = 6x - 4. Then describe the transformation from the graph of f(x) to the graph of g(x). у 6. 5. 4. 3. 2 . 0 1 A -3 -2 -1 3 2 -i - 5 4 5 6 -3 ### 5. -6​

Answers

Answer:

.Graph f(x) = 6x + 2 and g(x) = 6x - 4. Then describe the transformation from the graph of f(x) to the graph of g(x). у 6. 5. 4. 3. 2 . 0 1 A -3 -2 -1 3 2 -i - 5 4 5 6 -3 ### 5. -6​

Step-by-step explanation:

.Graph f(x) = 6x + 2 and g(x) = 6x - 4. Then describe the transformation from the graph of f(x) to the graph of g(x). у 6. 5. 4. 3. 2 . 0 1 A -3 -2 -1 3 2 -i - 5 4 5 6 -3 ### 5. -6​

The transformation from the graph of f(x) to the graph of g(x) is a vertical shift down by 6 units

The functions are given as:

[tex]f(x) = 6x + 2[/tex]

[tex]g(x) = 6x - 4[/tex]

Subtract function f(x) from g(x),

[tex]k = g(x) - f(x)[/tex]

This gives

[tex]k = 6x - 4 - 6x - 2[/tex]

Collect like terms

[tex]k = 6x- 6x - 4 - 2[/tex]

[tex]k = -6[/tex]

The above represents the unit of translation of function f(x) to g(x).

Hence, the transformation from the graph of f(x) to the graph of g(x) is a vertical shift down by 6 units

Read more about function transformation at:

https://brainly.com/question/1548871

a scaled drawing of a rectangular parking lot is 6 inches long and 5 inches wide. the actual parking lot is 72 feet long what is the area of the actual parking lot in square feet

Answers

I believe the answer is 60

PLEASE HELP ME 16 POINTS PLEASE HELP

Answers

Answer:

Slope: Rise/run

= -2/4

= -1/2

Answer:

-1/2

Step-by-step explanation:

Like I said in your previous question!!

RISE/RUN.

Choose a point, rise how many you need to, then run. Since you run 'backwards' after rising, this slope is negative!

I hope this helps!!

will mark branliest

Find the zeros of the function represented by the graph

answers (multiple choice)

- -4
- -3
- -2
- -1
- 0
- 1
- 2
- 3
- 4
- no solution

Answers

The zeros of the function (where it crosses the x axis) is at -3. I hope this helps.

PLEASE HLEP WITH QUESTION ONE PLS
1. Given the diagram to the right and information below, determine
which lines, if any, are parallel. State the converse that justifies
your answer.
199
10
0
10
b
c
Glven
Parallel Lines
Converse
a. 213a 217
b. 24 a 29
c. m219+ m222 180°
d. 8210
e. 210

Answers

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

a .

Parallel lines → a & c

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b .

Parallel lines → d & e

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

c .

I couldn't read it....

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d .

Parallel lines → ---

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

e .

Parallel lines → b & c

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

f .

Parallel lines → a & c

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brainliest!

what translation rule maps ABCD to A’B’C’D’ ?

Answers

I think it is option 1.

The reason that I say this is because ABCD is going left 1 to get to A’B’C’D’, which is like saying the x value is moving in the negative direction by 1. There is not an up or down translation, so there would be no change in y value (0). With this being said, the translation is going <-1,0>, or option 1.

The translation rule applied to the quadrilateral ABCD is T(1,0). The correct option is B.

What is translation?

A translation in mathematics moves a shape left, right, up, or down but does not turn it. The translated (or image) shapes appear to be the same size as the original shape, indicating that they are congruent.

Given that the quadrilateral is translated on the x-y plane from ABCD to A'B'C'D'.

The translation applied to the coordinates of the quadrilateral will be one unit to the right and zero units up or down.

The translation will be written as,

T ( 1 , 0 )

To know more about translation follow

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