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pentagon [3]
3 years ago
12

What do heating systems cooling systems and heat engines have in common

Mathematics
1 answer:
Lunna [17]3 years ago
5 0

Answer:

is D

Step-by-step explanation:

for egny

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A grocery store is offering a sale on bread and soup. Khalil buys four cans of soup and
Flura [38]

Answer:

a) cblo

2)$3.44

Step-by-step explanation:

4 cans and 3 loaves=11.67

8 cans and 1 loaf= 12.89.

Set up equation:

x=cans

y=loaves

4x+3y=11.67\\8x+y=12.89 This is the answer for question A.

Multiply eq1 by 2:

8x+6y=23.34

Subtract eq3 by eq2:

5y=10.45\\y=2.09

Substitute:

8x+2.09=12.89\\8x=10.8\\x=1.35

One can of soup and one loaf of bread=

1.35+2.09 or 3.44

So:

$3.44

Hope this helps :D Please hit the crown if u can !!

6 0
3 years ago
How do you solve for x? -12+7=-5(x+2)
dusya [7]
-5= -5x-10

Plus 10 from both sides

5=-5x
X = -1
7 0
3 years ago
Read 2 more answers
Can you please help im trying to get my grades higher so i can pass
Alex
I think 6 but I’m not sure also how I got this answer is by simplifying 3/2 to 1 and a half so than I did 7 and a half - 1 and a half
8 0
3 years ago
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(3x squared)to the power of -2 
Nady [450]
(3x^2)^{-2}\to\boxed{1/(3x^{2})^2\to\frac{1}{9x^4}}
3 0
3 years ago
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Eggplant has a yield of 81%. If you purchase 12lb of eggplant, how many pounds will you be able to use?(round to the nearest hun
Aleonysh [2.5K]

Answer:

9.72 lb

Step-by-step explanation:

Yield = the amount or quantity produced or returned.

Given:

  • Yield of eggplant = 81%
  • Amount of eggplant purchased = 12 lb

To determine how many pounds of eggplant you will be able to use, calculate 81% of the amount of eggplant purchased.

\begin{aligned}\sf 81\% \: of \: 12 \: lb & = \sf \dfrac{81}{100} \cdot 12\\\\& = \sf  \dfrac{81 \cdot 12}{100}\\\\& = \sf \dfrac{972}{100}\\\\& = \sf 9.72\:lb\end{aligned}

Therefore, you will be able to use 9.72 lb (nearest hundredth).

Learn more about percentages here:

brainly.com/question/27998542

brainly.com/question/27975347

6 0
1 year ago
Read 2 more answers
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