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satela [25.4K]
3 years ago
7

(6y^2-7y-3)-(2y^2-9y-7) simplify

Mathematics
1 answer:
madreJ [45]3 years ago
5 0
6y^2-7y-3-2y^2+9y+7 (pretend that you're multiplying -1 to 2y^2-9y-7 which is why 9y and 7 are positive now).
Now you're able to simplify your problem, so...

6y^2-2y^2= 4y^2
-7y+9y= 2y
-3+7=4

4y^2+2y+4

Might want to check my math but that's how you do it.
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Annette [7]
They would put the bolts inside the boxes and bags
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3 years ago
Someone help me out please
MA_775_DIABLO [31]

Answer:

142.5

Step-by-step explanation:

π×11²×135/360

= 363π/8

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Answered by GAUTHMATH

6 0
3 years ago
A school is organizing a cookout where hotdogs will be served. The hotdogs come in small packs and large packs. Each small pack
Bond [772]

The number of small packs is 2 and the number of large packs is 7

Step-by-step explanation:

A school is organizing a cookout where hot dogs will be served. The hot dogs come in small packs and large packs

  • Each small pack has 8 hot dogs
  • Each large pack has 18 hot dogs
  • The school bought 5 more large packs than small packs, which altogether had 142 hot dogs

We need to find the number of small packs purchased and the number of large packs purchased

Assume that the number of the small packs is x and the number of the large pack is y

∵ There are x small packs

∵ Each small pack has 8 hot dogs

∵ There are y large packs

∵ Each large pack has 18 hot dogs

∴ The total number of hot dogs in all packs = 8x + 18y

∵ All packs had 142 hot dogs

- Equate the total number of hot doges by 142

∴ 8x + 18y = 142 ⇒ (1)

∵ The school bought 5 more large packs than small packs

∴ y = x + 5 ⇒ (2)

Now we have system of equations to solve it

Substitute y in equation (1) by equation (2)

∴ 8x + 18(x + 5) = 142

- Simplify the left hand side

∴ 8x + 18x + 90 = 142

- Add like terms in the left hand side

∴ 26x + 90 = 142

- Subtract 90 from both sides

∴ 26x = 52

- Divide both sides by 26

∴ x = 2

- Substitute the value of x in equation (2) to find y

∵ y = 2 + 5

∴ y = 7

The number of small packs is 2 and the number of large packs is 7

Learn more:

You can learn more about the system of equations in brainly.com/question/2115716

LearnwithBrainly

5 0
3 years ago
Erica spent 1/3 of her money on a pack of pens 1/2 of her money on a pack of markers and 1/8 of her money on a pack of pencils w
iogann1982 [59]
Find common denominator first.
Looks like 24. So 3/24 + 12/24 + 4/24 = 19/24 spent.

So the remainder would be 5/24.
3 0
3 years ago
Use a related equation that has the variable on one side. Then simplify the other side. m/4 = 16 A. m = 64 B. m = 4 C. m = 12 D.
Harrizon [31]
My 64 because 64÷4=16
7 0
3 years ago
Read 2 more answers
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