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3 years ago

9

if the coordinates of point a are (-3, 2) and the coordinates of point b are (7, 6), the x-intercept of

1 answer:

Nezavi [6.7K]3 years ago

8 0

Find the equation of the line

slope=(y2-y1)/(x2-x1)
slope=(6-2)/(7-(-3))=4/10=2/5

slope is 2/5
y=mx+b
y=2/5x+b find b
input a point
6=2/5(7)+b
6=14/5+b
minus 14/5 from both sides
3 and 1/5=b
16/5=b
xintercept is when y=0
0=2/5x+16/5
minus 16/5 from both sides
-16/5=2/5x
times both sides by 5/2 to clear fraction
-8=x

xintercept is -8 or (-8,0)

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Need help with finding the surface area and volume for this please thanks I just need step by step help so I can understand it m

Allisa [31]

Answer:

144

Step-by-step explanation:

First, do the top and bottom. The top is 2*4*3 or 24, and the bottom is 6*4 or 24.

Now, do the sides. It is a staircase that you can split into 6 2x2 blocks, or 6*4=24. Do the same with the other side to get 24 again.

Now for the front and back. This is 2*4*3 and 6*4 again, or 24 and 24.

Now you have 6 24's so just multiply these and get 144.

6 0

3 years ago

Regis has a bag with 8 tiles numbered 1 through 8. He randomly draws one bag without looking. Which of the following describes a

Daniel [21]

He has a likely outcome of 1/8

8 0

3 years ago

F(x) = -7-3x + 6x^3+x^2

Monica [59]

Answer: (0,-7)

Steps: To find y-intercept, substitute x=0

f(0)= -7-3×0+g×0^3 +0^2

Multiply & Evaluate powers

f(0)=-7-0+6×0+0

Remove zeros. Multiply.

f(0) -7+6×0 → f(0) -7+0

Remove the zero

f(0)=-7

Hope this helps ʕ•ᴥ•ʔ

3 0

3 years ago

Five-X=12 what does x=?

Irina18 [472]

X is 7 obiviously because when you subtract 5 from both sides you are gonna have 7 for x

6 0

3 years ago

Read 2 more answers

A collection of dimes and quarters has a total value of five dollars and contains 29 coins. How much of each kind of coin are th

Feliz [49]

Answer:

15 dimes and 14 quarters.

Step-by-step explanation:

Let q represent number of quarters and d represent number of dimes.

We have been given that a collection of dimes and quarters contains 29 coins. We can represent this information in an equation as:

$q+d=29...(1)$

$q=29-d...(1)$

We know each dime is worth $0.10 and each quarter is worth $0.25.

We are also told that the total value of coins is $5. We can represent this information in an equation as:

$0.25q+0.10d=5...(2)$

Upon substituting equation (1) in equation (2), we will get:

$0.25(29-d)+0.10d=5$

$7.25-0.25d+0.10d=5$

$7.25-0.15d=5$

$7.25-7.25-0.15d=5-7.25$

$-0.15d=-2.25$

$d=\frac{-2.25}{-0.15}$

$d=15$

Therefore, there are 15 dimes in the collection.

Upon substituting $d=15$ in equation (1), we will get:

$q=29-d\Rightarrow 29-15=14$

Therefore, there are 14 quarters in the collection.

4 0

4 years ago