QUICKK
Solve systems by substitution Find the solution
SHOW ALL WORK

Y = 2
3x + 4y = 20

( , )

Step-by-step explanation:

equation 1+2 _ 8y=32

y=32÷8

y=4

y=4 in equation 2

4=-3x+7

4=-3x +7

4-7=-3x

-3=-3x

x=1

I think two solution

Answer:

Step-by-step explanation:

Omggg

hii

Answer:

17.5

Step-by-step explanation:

let 'x' = each congruent side

let '2x - 7' = side of base

x + 2x - 7 = 63

3x = 70

x = 17.5

Answer:

( 6, -11 )

Step-by-step explanation:

do it on a graph called desmos

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(9/2 , −2)

Equation Form:

x=9/2 , y=−2

Step-by-step explanation:

Answer:

12:15= 4.5

32:28 = 8:7

45:60135=3:4

Step-by-step explanation:

The rest are confusing

Answer:

Step-by-step explanation:

8:20 = 2:5

32:28 = 8:7

12:15:24 = 4:5:8

45:60:35 = 9/12/7

80:112:176 = 5:7:11

Answer:

iffjfjfkfkfjfjtigkodgujjdjsjjsjssjcnkjjdjdjjf

Answer:

slope=-1/2

Step-by-step explanation:

Answer:

-1/2

Step-by-step explanation:

Since it goes up 1 the numerator would be 1 and since it goes to the left 2 the denominator would be -2. the fraction would be -1/2.

Hope this helps you!!!!

Answer:

Your answer is 31.4°.

Step-by-step explanation:

The answer itself just requires very simple thinking. Complementary angles are any two angles that add up to 90 degrees. We are given ANGLE<1, so all we have to do is subtract 90 from 58.6 to find ANGLE<2.

90°-58.6°= 31.4°

Please mark brainilest if this is the most helpful answer.

Answer:

60%

Step-by-step explanation:

Answer:

60%

Step-by-step explanation:

9/15=0.6 which is 60%

Answer:

b hope it helps

Step-by-step explanation:

Answer: The probability that Jo is not late on Monday = 0.6

Step-by-step explanation:

The probability of getting late is independent on each day.

Also, for an event E

Probability of not E = 1- P(E) , where P(E) = Probability of happing E

Given: The probability Jo is late on a Monday is 0.4.

Then, the probability that Jo is not late on Monday =  1-0.4= 0.6

Hence, the probability that Jo is not late on Monday = 0.6

Answer:

blob

Step-by-step explanation:

Answer: b the second answer

Step-by-step explanation:

Answer:

-0.4

Step-by-step explanation:

its that one

The strongest correlation is -0.4.

Option C is correct.

Correlation is a statistical term that expresses how closely two variables are related linearly (meaning they change together at a constant rate). It's a typical tool for describing simple relationships without stating a cause and effect link.

When the result is closer to +1 (positive correlation) or -1 (negative correlation), the strongest correlation is considered (negative correlation).

A positive correlation coefficient means that the value of one variable is directly related to the value of another.

Here -0.4 is the closest value to 1.

So, the strongest correlation is -0.4.

Learn more about Correlation here:

https://brainly.com/question/28898177

#SPJ7

Answer:

$69.51

Step-by-step explanation:

To solve the discount problem we have to multiply the price by the new percent (trust me it will make sense later)

To find the new percent after the 30% discount we have to subtract 30% from 100% which will leave us with 70% or 0.70

Now we multiply:

$99.30 x 0.70 = 69.51

So the new price after the discount is $69.51

plz mark me brainliest

Answer:

math sdlkgfns'olgn"Flkvnsd;lkfnslknd s,kfNMSD,kn;kjdefnS:Dl

Step-by-step explanation:

Step-by-step explanation:

I am not sure bout this question sry

you reap what you sow ;)

Answer: (3, -2)

Step-by-step explanation: graphed both of em on desmos and thats the intersection.

Answer:

y = -x + 1

Step-by-step explanation:

We're putting it into the form y=mx+b where m is the slope, and b is the y-intercept.

When two lines are parallel, they have the same slope, so the slope is going to be -1.

New equation: y = -x + b.

Now, you know that (4, -3) is a solution so you can plug in x = 4 and y = -3, then see what value of b make the equation true.

-3 = -4 + b

add 4 to both sides

1 = b

This means that the equation is y = -x + 1

Answer:

Frequency of wave = 3 Hertz

Step-by-step explanation:

Given that:

Wavelength of wave = 20 meters

Velocity of wave = 60m/s

We know that:

v = fλ

Here,

v = velocity , f = frequency and λ = wavelength

Putting values in formula

60 = f(20)

20f = 60

Dividing both sides by 20

[tex]\frac{20f}{20}=\frac{60}{20}[/tex]

f = 3 Hertz

Hence,

Frequency of wave = 3 Hertz

Answer:

-1/6

Step-by-step explanation:

First, solve the (   )

3/4*4/9=1/3

plug this into the problem

-1/2+1/3

now solve the problem

make the denominators the same

-3/6+2/6

=-1/6

Answer:

on what

Step-by-step explanation:

Answer:

Nothing showed up :/

Step-by-step explanation:

no.............................

Answer:

The first one is 0.7q, and the other is 0.4q

Step-by-step explanation:

Since there is a 30% discount, you pay 70% of the normal price. Since there is a 60% discount, you pay 40% of the normal price.

Hope this helped you understand it a bit!

Answer:

To convert a decimal to percent, just multiply it by 100, or move the decimal place 2 times

Ex: 0.29 x 100 = 29

The answer would be 29%

To convert a percent to a decimal, do the opposite

Ex: 29%/100 = 0.29

To convert decimals to percents is to multiply by 100 then add a percent sign. To convert percents to decimals is to move the decimal point two places to the left or divide by 100 and remove the percent sign.

Step-by-step explanation:

Example:2.5%

2.5% can be expressed in decimal form as 0.025. Since a percent represents the part per 100 to convert a percent to a decimal divide 2.5 by 100.

2.5/100=0.025.

Example:2.5

2.5 can be expressed in percent form as 250%.Since a decimal represents a fraction and a percent is out of 100, to convert a decimal to a precent multiply 2.5 by 100.

2.5 x 100=250

Add the percent sign

250%

Answer:

The unit rate = 27 miles per gallon.

Hence, option C is true.

Step-by-step explanation:

From the given line graph:

Taking two points

The unit rate can be determined by finding the rate of change or slope between the points (2, 54) and (6, 162)

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

[tex]\left(x_1,\:y_1\right)=\left(2,\:54\right),\:\left(x_2,\:y_2\right)=\left(6,\:162\right)[/tex]

[tex]m=\frac{162-54}{6-2}[/tex]

Refine

[tex]m=27[/tex]

Therefore, the unit rate = 27 miles per gallon.

Hence, option C is true.

Answer:

Step-by-step explanation:

the variable= k

the operation= dividing

the constant=8

Answer:

Step by step below

Step-by-step explanation:

center of dilation: W

Similarity statement:

wx/wx' = wz/wz' = xy/x'y' = yz/y'z' = 5/3

∠w = ∠w=90°,  ∠x = ∠x'=90°,  ∠y = ∠y'=90°,  ∠z = ∠z'=90°

square wx'y'z' ~ wxyz

Answer:

b = 4y

y = 1/4 * b

Step-by-step explanation:

Number of Blue fish = 16

Number of yellow fish = 4

Let:

Blue fish = b

Yellow fish = y

b = 4y

b = 4(4)

b = 16

From ;

b =4y

y = b/4

y = 1/4 * b

Hence,

y = 1/4 * 16

y = 16/4

y = 4