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Nataliya [291]
3 years ago
8

Pls help me, I really dont understand

Mathematics
1 answer:
Stella [2.4K]3 years ago
7 0

Answer:

-2.5x-.5

y=\frac{2}{3}x-1

draw the dotted line (3/7)x-3 and shade below it

Step-by-step explanation:

First, we need the slope

Use the slope formula:

\frac{Y_2-Y_1}{X_2-x_1}=\frac{2-(-8)}{-1-3}=\frac{10}{-4}=-2.5

so we have

y= -2.5x+b

Solve for b by plugging in coordiantes

-8= -2.5(3)+b

-8= -7.5+b

b= -.5

Put it together and get -2.5x-.5

2.)

A line is parallel to another line if they have the same slope (and different y intercepts)

So in the formula y=mx+b we knowe that m= 2/3

Now it's just a matter of solving for B

plug in the required coordinate to do this

-1=(2/3)*0+b

-1= b

Put it all together to get

y=\frac{2}{3}x-1

3.)

put this into slope intercept form

3x-7y>21

3x-21 > 7y

(3/7)x-3 >y

To graph this just draw a dotted line with the equation (3/7)x-3 and shade everything below it (use de_smos if you're stuck)

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Write each expression in quadratic form, if possible..<br><br> 5X^4 + 2X^2 - 8
Igoryamba

5X^4 + 2X^2 – 8

 

Its quadratic form is 5(x²)² +2x² -8

<span>Let be X²=p, so the final expression is 5p²+2p-8</span>

4 0
2 years ago
HELPP it’s angles of a triangle much appreciated !
bulgar [2K]

Answer:

The coastline of alaska is longer than the entire coastline of the lower forty-eight states

3 0
2 years ago
Ay/x=cz? variable is y.
babymother [125]
Ay/x = cz

Multiply 'x' to both sides:

Ay = czx

Divide 'A' to both sides:

y = (czx)/(A)
3 0
3 years ago
Read 2 more answers
1
Gnoma [55]

Answer:

A

Step-by-step explanation:

edge

3 0
3 years ago
PLS HELP ME I ONLY HAVE # HOURS TO COMPLETE I WILL MARK THE BRAINLIEST!!!
nata0808 [166]

triangle on right is the same as the triangle on the left

use pythagorean theorem

hypotenuse will give to the sides of the rectangle

a^2 + b^2 = hypotenuse squared

10.4^2 = 108.16

15.3^2 = 234.09

342.25 = hypotenuse squared

take the square root in both sides

hypotenuse = the square root of 342.25 =

18.5

add up the areas of the 2 triangles and rectangle

triangle area is 1/2 times 10.4 times 15.3 =

79.56

2 triangles areas are 159.12

rectangle area is 18.5 × 7 = 129.5

159.12 + 129.5 = 288.62

answer 1 = 288.62

second question:

to get 1 side take the

square root of 702.25 which is

26.5

to get the perimeter

multiply 26.5 by 4 which is

106

answer 2 is choice B 106

3 0
2 years ago
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