2 years ago

What is the rate between 78 miles and 3 gallons of gas

Mathematics

1 answer:

Allisa [31]2 years ago

8 0

Answer:

26 miles per gallon

Step-by-step explanation:

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What should be added to a²-2ab+b² to get a²-ab-2b²

dybincka [34]

SOLUTION:

what should be added to a²-2ab+b² to get a²-ab-2b²

let the added no is P

$\pmb{P+(a^2-2ab+b^2)=(a^2-ab-2b^2) }$

$\pmb{P=(a^2-ab-2b^2)-(a^2-2ab+b^2) }$

$\pmb{P=a^2-ab-2b^2-a^2+2ab-b^2 }$

$\pmb{P=ab-3b^2 }$

$\therefore{\pmb{ab-3b^2 }}$ should be added to a²-2ab+b² to get a²-ab-2b²

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2 years ago

Simplify: 2x + 9 - 17x - 15 -x

Ostrovityanka [42]

Answer:

Step-by-step explanation:

2x + 9 - 17x - 15 - x =????

2x - 17x - x + 9 - 15 = 0

- 15x - x - 16 = 0

- 16x - 16 =0

-16x = 16

x = 16 / - 16

x = 1

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2 years ago

Help subtract (xsquared +43x10)-(10xsquared-5x+10 express the answer in standard form

ad-work [718]

Answer:

$\large\boxed{(x^2+43x+10)-(10x^2-5x+10)=-9x^2+48x}$

Step-by-step explanation:

$(x^2+43x+10)-(10x^2-5x+10)\\\\=x^2+43x+10-10x^2-(-5x)-10\\\\=x^2+43x+10-10x^2+5x-10\qquad\text{combine like terms}\\\\=(x^2-10x^2)+(43x+5x)+(10-10)\\\\=-9x^2+48x$

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3 years ago

What is the area of triangle DFG? Round to the nearest whole square unit. 27 square units 38 square units 364 square units 728 s

Rudik [331]

Answer:

27 Units

I just took the test and got 100 percent

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3 years ago

Read 2 more answers

Find the surface area of the two following figures. Show all your work.

Misha Larkins [42]

Answer:

First shape: 366 in^2

Second shape: 376 in^2

Pretty sure these are correct, hope this helps!

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2 years ago