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3 years ago

I need help with #22 & 23 ASAP!!!!please explain so I can understand

Mathematics

1 answer:

ella [17]3 years ago

5 0

Answer:

22.) y = -1/7x + 8/7 23.) y = 2x -3 (x is the slope.)

Step-by-step explanation

22.) Divided each side by 7. Subtract 1/7x from each side to get the eqaution.

23.) Divided each side by 3. Add y to each side. then subtract 9 from each side to get the equation.

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I don't know what to do. Plz Help!

stealth61 [152]

Answer:

one should be 2m but idk

Step-by-step explanation:

I did this last year but I don't remember. best of luck !

8 0

3 years ago

Peter hired a cleaning company to clean his house. The cleaning company charges a fixed fee of $15 plus $17 per hour to clean a

almond37 [142]

Answer:

5 (for c only)

Step-by-step explanation:

for c:

1st cleaning company: $y=17x+15$

2nd cleaning company: $y=20x$

set up as a system of equations. for them to cancle out make the y of one equation negative. I'll be making the second one negative ( it doesn't matter though)

it will look like:

$y=17x+15$

$-y=-20x$

make the two equations on top of eachother and line the terms up. Then combine them. The variable "y" will cancle out and you'll be left with

$0=-3x+15$

then you will add 3x to both sides to get $3x=15$ then divide both sides by 3 to get $x=5$

if you plug in 5 for x into both of the original equations you will see that they will both make $100 in five hours. So you answer is 5

8 0

3 years ago

36 rows of 27 trees were planted in the orchard. how many total trees were planted in the orchard

kherson [118]

Answer:

972 trees

Step-by-step explanation:

36 times 27

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3 years ago

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Which statements are true about the shapes? Select three options.

blsea [12.9K]

Answer:

a,c,and e

Step-by-step explanation:

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3 years ago

Read 2 more answers

the height h (in feet) of an object thrown vertically upward from a tower 144 feet tall is given by h=144+128t-16t², where t mea

Musya8 [376]

It takes 9 seconds to hit the ground.

Setting the equation equal to 0, we have:
0 = 144 + 128t - 16t²

Factoring out the GCF, we have
0 = 16(9 + 8t - t²)

Factoring out -1, we have:
0 = -16(-9 - 8t + t²)

In standard form, this is
-16(t² - 8t - 9) = 0

This is easily factorable; -9(1) = -9 and -9+1 = -8:
-16(t-9)(t+1) = 0

Using the zero product property, we know either t-9=0 or t+1=0; therefore t=9 or t=-1. Since negative time makes no sense, t=9.

6 0

3 years ago