2x+4x=-8 x+2y=4 substitution

Answer:

y=x+1.75

4x-2y = 4

The answer is (3. 75, 5.5)

Step-by-step explanation:

If you plot the two equations on Desmos' Graphing Calculator, you will see that the solution is intersected at (3.75, 5.5).

Answer:

25%

Step-by-step explanation:

Given the following question:

What percent is 10 out of 40?

We use the formula to calculate percentages to find the answer.

[tex]\frac{p \times n}{100}[/tex]
[tex]\frac{25\times40}{100} =25\times40=1000\div100=10[/tex]
[tex]=10[/tex]

"25%" of 40 is equal to 10.

Hope this helps.

Answer:For the answer to this It has me stuck between A and B

Answer:

$820.00

Step-by-step explanation:

x = price yesterday (initital price)

If it is 67% off, then the price is 33% of the initial.

x(.33) = 270.60

divide .37 on both sides

x = 820.00

The price of the suit yesterday is $820.00.

Answer:

600

Step-by-step explanation: [tex]100\times2\times\frac{180}{60}[/tex]

Cross out the common factor

[tex]100\times2\times3[/tex]

Calculate the product or quotient

[tex]200\times3[/tex]
[tex]600\ YOUR\ ANSWER\ which\ can\ also\ be\ written\ as\ 6\times{10}^2\[/tex]

I hope this helps you

:)

If the initial population of the bacteria is 100, then the population of the bacteria after 180 hours will be 800.

Exponential notation is the form of mathematical shorthand which allows us to write complicated expressions more succinctly. An exponent is a number or letter is called the base. It indicates that the base is to raise to a certain power. X is the base and n is the power.

A colony of 100 bacteria doubles in size every 60 hours.

The exponential relation will be given below.

[tex]\rm P = 100 \times 2^{t/60}[/tex]

Where t is the number of hours

Then the population of the bacteria after 180 hours will be

[tex]\rm P = 100 \times 2^{t/60} \\\\P = 100 \times 2 ^{180/60}\\\\\rm P = 100 \times 2^{3}\\\\\rm P = 100 \times 8\\\\\rm P = 800[/tex]

More about the exponent link is given below.

https://brainly.com/question/5497425

Explanation and Answer:

The graph of y=[tex]x^2[/tex] is a parabola (it looks like a u) that intersects the graph at the origin. These are all shifted variations of that graph, so from that you can figure out their formula by visualizing it.

You can also try substituting numbers into the equations and drawing a graph from that.

Graph A is the y=x^2, shifted to the left, so it becomes [tex]y=x^2+x[/tex]. It's +x because now negative numbers can be gotten from the equation, as compared to before when x^2 gives only positive numbers.

Graph B is [tex]y=x^2+3x[/tex] . Similar to graph A, but now it moves down by more units, because of the 3x.

Graph C is [tex]y=-x^2+2[/tex]. Imaging y=x^2 flipped, it changes from looking like a u to n. That's y=[tex]-x^2[/tex]

Graph D is [tex]y= x^2-x[/tex]. The opposite of Graph A.

x2+y2=9 is not a function

In order for an equation to represent a function any single value of x must have at most one corresponding value of y which satisfies the equation.

For

x

2

+

y

2

=

9

XXXX

if (for example)

x=0XXXX there are two values for y (namely +3 and −3) which satisfy the equation

Answer:

what's the problem?

Step-by-step explanation:

do u have a picture to show us?

The possible outcomes of the fair coin and the dice is the sample space

The items are given as:

Coin = 1

Dice = 1

The sample space of both items are:

Coin = {H,T}
Dice = {1,2,3,4,5,6}

So, the list of possible outcomes is: {H1,H2,H3,H4,H5,H6,T1,T2,T3,T4,T5,T6}

From the above list, there is only one outcome that has a head and a 3 out of 12 possible outcomes

So, the probability of getting a head and a 3 is:

p = 1/12

Hence, the probability of getting a head and a 3 is 1/12

Read more about probability at:

https://brainly.com/question/25870256

[tex]\tt \dfrac{3}{8}\times 28.7=10.7625=10.76~kg[/tex]

Answer:

Step-by-step explanation:

The order of the expression for congruent shapes indicate the

corresponding vertices between the two shapes that are congruent.

The option which is true is D. T = Q.

Reasons:

The given statement is; ΔRST ≅ ΔNPQ

By Corresponding Parts of Congruent Triangle are Congruent, CPCTC, we

have; The sides on ΔRST are congruent to the corresponding sides of ΔNPQ

Therefore;

RS ≅ NP

RT ≅ NQ

ST ≅ PQ

By CPCTC, we have that the angles on ΔRST are congruent to the corresponding angles of ΔNPQ

Therefore;

∠R ≅ ∠N

∠S ≅ ∠P

∠T ≅ ∠Q

Which gives, by definition of congruency;

∠R = ∠N

∠S = ∠P

∠T = ∠Q

Therefore, the true statement is D. T = Q.

give brainliest

Answer: 21.45$

Step-by-step explanation: I can’t explain how i got it but i hope this helped!

Answer:

$43.55

Step-by-step explanation:

I took 65 and found 33% by making 33% .33 and did 65*33, then subtracted what I got from the total of 65, 65-21.45 which is $43.55.

Answer:

A) corresponding angles are equal

Answer:

above is the solution to the question

Answer:

explicit  definition: [tex]a_n=5n-4[/tex]

recursive definition: [tex]a_n=a_{n-1}+5[/tex]

Step-by-step explanation:

Given arithmetic sequence: 1, 6, 11, 16, 21 ...

Therefore,

Using the general form of arithmetic sequence: [tex]a_n=a+(n-1)d[/tex]

[tex]\implies a_n=1+(n-1)5[/tex]

[tex]\implies a_n=1+5n-5[/tex]

[tex]\implies a_n=5n-4[/tex]

or [tex]a_n=a_{n-1}+5[/tex]

Answer:

Step-by-step explanation:

Answer:

subtract 9 from both sides

Step-by-step explanation:

m + 9 = 45 ( subtract 9 from both sides )

m = 36

Answer:

Subtract

Step-by-step explanation:

You should subtract since the equation says to add.

You basically do the opposite of what it says.

For example, if it was m - 9 = 45 you would add 9 on both sides, but in this case, you would subtract since its m + 9 = 45

m + 9 = 45

subtract nine by 9 and 45:

m = 36

36 + 9 = 45

Answer:

[tex] - 3 \times 5 \times - 9 \times - 2 \\ - 15 \times + 18 = 3[/tex]

Answer:4323.78cm^3

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

3x and x + 30 are vertically opposite angles and are congruent , then

3x = x + 30 ( subtract x from both sides )

2x = 30 ( divide both sides by 2 )

x = 15

Then

∠ A = 3x = 3(15) = 45°

See <A and x+30 are opposite angles .

We know that opposite angles are equal

so

Now

Option A is correct

Answer:

She sold $1800 worth.

Step-by-step explanation:

290-200=90

90 x 20 because 100÷5=20

90 x 20 = 1800

$1800

Problem 2

Why not? Well it's because the angles do not match up perfectly.

The triangle on the left is a 30-60-90 triangle; while the triangle on the right is a 40-50-90 triangle. The numbers mentioned are the angle values.

Only the "90"s match up, but everything else does not. We need to have three pairs of congruent angles to be able to use the angle angle (AA) similarity theorem.

The largeness of the circle is an illustration of proportions

Using the assumed parameters, the circle must be 200 times larger than a normal circle

The question is incomplete; so I will make use of assumed values

Assume that a normal circle of radius r can take up to 50 toy cars.

When the normal circle is replaced by a larger circle of radius R to take up to 10000 toy cars, the size of the circle must be:

Size = 10000/50

Divide

Size = 200

This means that the circle must be 200 times larger than a normal circle

Read more about proportions at:

https://brainly.com/question/870035

The sample space of Shari's tree diagram is the total possible outcomes of rolling the game piece and spinning the pointer.

It doesn't matter if Shari starts with the spinner or the game piece

The experiment involves:

If Shari starts with the game piece, the sample size (n) would be:

n = 12 * 4

n = 48

If Shari starts with the spinner, the sample size (n) would be:

n = 4 * 12

n = 48

Notice that the sample size remains unchanged irrespective of what he starts with

Hence, it doesn't matter if Shari starts with the spinner or the game piece

Read more about tree diagram at:

https://brainly.com/question/2581880

Answer: 254.34 yd

Step-by-step explanation:

If the diameter is 18 yd then the radius:

radius = diameter/2

r = 18/2

r = 9 yd

So the area is:

[tex]A = \pi r^2\\= \pi (9)^2\\= (3.14)(81)\\ =254.34 \hspace2yd[/tex]

Therefore, the area of the circle is 254.34 yd

Answer:

y-2/3x-4

the answer is (0,3)

3x+4y-12

the answer is (0,3)

Answer:

12%

Step-by-step explanation:

have faith in me bro :>

12% of the people surveyed own fish.

Relative frequency refers to the percentage or proportion of times that a given value occurs within a set of numbers, such as in the data recorded for a variable in a survey data set.

We get  

Total (own fish) = 0.04 + 0.08 = 0.12

So, own fish = 0.12

= 12%

12% of the people surveyed own fish.

Find out more information about relative frequency here

https://brainly.com/question/16832475

#SPJ2

Answer:

Step-by-step explanation:

Use similarity ΔPQS ~ ΔRQS

Use the ratio of corresponding sides:

Find PS

Use similarity ΔPQS ~ ΔPRQ

Ratio of corresponding sides:

Use similarity ΔPQS ~ ΔPRQ

Ratio of corresponding sides:

Find RS:

Answer options

Answer:

Step-by-step explanation:

As with other forms of direct and inverse variation, the "constant of variation" (k) is the constant multiplier in the equation. "Varies directly" means the independent variable is in the numerator. "Varies inversely" means the independent variable is in the denominator. The variation equation can be solved for missing values of constants or variables.

The equation for "varies directly with v and w, and inversely with z" means the equation is of the form ...

  y = k·v·w/z

Then the values of v or w are ...

  v = y·z/(k·w)

  w = y·z/(k·v)

__

  k = y·z/(v·w) = 5·24/(12·14) = 5/7; the equation is y = 5·v·w/(7·z)

  w = y·z/(k·v) = 18·8/(10·4) = 18/5; the equation is y = 10·v·w/z

  k = 3/2 (read from the equation); y = (3/2)v·w/z = 3·16·24/(2·6) = 96

  k = 8 (read from the equation); v = y·z/(k·w) = 20·2/(8·6) = 5/6

  y = k·v·w/z = 6·12·7/15 = 168/5; the equation is y = 6·v·w/z