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3 years ago

I not very good with slope and y intercept form. any tips ?

Mathematics

1 answer:

jeyben [28]3 years ago

4 0

Step-by-step explanation:

To find the slope you use the slope formula which is y2-y2/x2-x1

And to find the y intercept you use y=mx +b. Yous substitute the slope as m and you substitute a point from the line to find b. Which is the y intercept

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Hello I need help with this immediately please see attached image thank you so much I will give Brainliest

erma4kov [3.2K]

Note that while the figure is made up of rectangle and parallelogram, then the area of this figure

$A_{figure}=A_{rectangle}+A_{parallelogram}.$

1. The area of rectangle is

$A_{rectangle\ ABCF}=AB\cdot BC.$

The vertices of rectangle are points A(-2,-2), B(0,-6), C(8,-2) and F(6,2). Then

$AB=\sqrt{(-2-0)^2+(-2+6)^2}=\sqrt{4+16}=\sqrt{20}=2\sqrt{5},\\ \\BC=\sqrt{(8-0)^2+(-2+6)^2}=\sqrt{64+16}=\sqrt{80}=4\sqrt{5}.$

Therefore,

$A_{rectangle\ ABCF}=2\sqrt{5}\cdot 4\sqrt{5}=8\cdot 5=40\ un.^2$

2. The area of parallelogram can be calculated using formula

$A_{parallelogram\ FCDE}=\text{base}\cdot \text{height}.$

The base of parallelogram is segment CD with length

$CD=\sqrt{(8-8)^2+(3+2)^2}=\sqrt{25}=5$

and the height has length 2 un. Then

$A_{parallelogram\ FCDE}=5\cdot 2=10\ un^2.$

3. Now

$A_{figure}=40+10=50\ un.^2$

8 0

3 years ago

Diana bought some art supplies the total came to $38.00 there is a 6 1/2 sales tax how much did she pay?

xz_007 [3.2K]

Answer:

Diana payed $31.50 for art supplies without tax.

Step-by-step explanation:

Total = 38.00

Sales Tax = 6.5

38.00 - 6.50 = $31.50

5 0

3 years ago

I need help with my math A.S.A.P.

harina [27]

What you have to do it 12*15*3.14=
and you take that answer and divide it by 20.14

3 0

3 years ago

Marissa is choosing a four-digit PIN for her ATM card. The first digit must be a digit from 1 through 9. For the other three dig

HACTEHA [7]

Answer:

2345,2034,2134

Step-by-step explanation:

2 is between 1-9 and 345 does not include a repeated number, the same gods for the rest

6 0

3 years ago

Read 2 more answers

A school survey found that 24 out of 30 students prefer chocolate milk to white milk. If the school has 500 students, which is t

Georgia [21]

Answer:

Around 401 students would prefer chocolate milk.

Step-by-step explanation:

500/30=16.66667...

24*16.7=400.8

you cant have an eighth of a vote so you round to 401

4 0

3 years ago