2 years ago

A student missed 3 questions on a 30 question test. what percent did she get correct?

Mathematics

1 answer:

Lyrx [107]2 years ago

4 0

Answer:

90%

Explanation: 27/30 ÷ 3 = 9/10

9/10 ⇒ 9 x 10 = 90%

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aiden currently has a balance of $4443.48 in an account he has held for 17 years he open the account with initial deposit of $25

pickupchik [31]

$\bf \qquad \textit{Simple Interest Earned Amount}\\\\
A=P(1+rt)\qquad 
\begin{cases}
A=\textit{accumulated amount}\to &\$4443.48\\
P=\textit{original amount deposited}\to& \$2567\\
r=rate\to r\%\to \frac{r}{100}\\
t=years\to &17
\end{cases}
\\\\\\
4443.48=2567(1+r17)\implies \cfrac{4443.48}{2567}=1+17r
\\\\\\
\cfrac{4443.48}{2567}-1=17r\implies \cfrac{\frac{4443.48}{2567}-1}{17}=r\implies 0.043\approx r
\\\\\\
0.043\approx\cfrac{r}{100}\implies 0.043\cdot 100\approx r\implies 4.3\%\approx r$

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3 years ago

Factor the following expression: 12x+4-16x

zepelin [54]

Answer:

12x+4-16x = 0

-4x + 4 = 0

-4x = 0-4

x = -4/-4

x= 1

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2 years ago

Is this example an

ivanzaharov [21]

Equation C. :) lalalalalala

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2 years ago

4x - 4 - 2x + 3 solve this problem

DENIUS [597]

Answer: 2x-1
combine like terms: 4x and -2x
-4 and 3

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2 years ago

Write an equation in slope-intercept form for the line

Art [367]

Answer:

Step-by-step explanation:

y - 2 = -4(x - 1)

y - 2 = -4x + 4

y = -4x + 6

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2 years ago