3 years ago

Write and solve a proportion to answer the question. What number is 120% of 80?

Mathematics

1 answer:

ANEK [815]3 years ago

8 0

Answer:

Step-by-step explanation:

120 percent (calculated percentage %) of number 80? Answer: 96.

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Help I will give brainliest to wboever answers best

Fiesta28 [93]

Answer:

Area of ABD = 9/2 or 4.5cm^2

Step-by-step explanation:

Area of triangle =

$\frac{bh}{2}$

plug-in ABD

$\frac{3 \times 3}{2}$

$\frac{9}{2}$

Area of ABD = 9/2 or 4.5cm^2

8 0

3 years ago

32 is 90% of what number?

spayn [35]

Answer:

$\large\boxed{32\ is\ 90\%\ of\ 35\dfrac{5}{9}}$

Step-by-step explanation:

<h3>METHOD 1:</h3>

$\begin{array}{ccc}32&-&90\%\\\\x&-&100\%\end{array}\qquad\text{cross multiply}\\\\\\90x=3200\qquad\text{divide both sides by 90}\\\\x=\dfrac{3200}{90}\\\\x=\dfrac{320}{9}\\\\x=35\dfrac{5}{9}$

<h3>METHOD 2:</h3>

$\begin{array}{cccc}32&-&90\%&\text{divide both sides by 9}\\\\\dfrac{32}{9}&-&10\%\end{array}\\\\\\90\%+10\%=100\%\to32+\dfrac{32}{9}=32+3\dfrac{5}{9}=35\dfrac{5}{9}$

3 0

3 years ago

N = x + y - n = 5<br> and part two<br> x = u + v = o<br><br> whats the answer?

Colt1911 [192]

Just substitute the value of x from second equation into first equation:
N = x + y - n = 5
N = u + v + y - n = 5
N = 0 + y - n = 5

In short, N would be equal to y - n which is still equal to 5

Hope this helps!

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3 years ago

What is the sum of the polynomials?

lesya [120]

Add the like terms:

8x2+x2=9x2

-9y2-3y2=-12y2

-4x-7x=-11x

Combine each term:

9x2-12y2-11x

Hope this helps!!

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3 years ago

Selene's checking account balance was -$30, and then she withdrew $40 more. What is her checking account balance after the withd

irakobra [83]

-$70 is her balance after withdrawing the forty dollars

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3 years ago