4 years ago

18. You hear your little brother yelling from the other room about how his stupid phone has been

Mathematics

1 answer:

Savatey [412]4 years ago

7 0

Answer:

40% I think

Step-by-step explanation:

if it was on 20% and it's only gone up 20% it would now be at 40% but it still only has gone up 20%

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Bianca deposited $1500 into asavings account for whichsimple interest is calculatedquarterly. If her $1500 grew to$1509 after 3

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Solution:

Given;

$P=1500,A=1509,t=3months=0.25year$ $\begin{gathered} A=P(1+\frac{r}{4})^{4t} \\ \\ 1509=1500(1+\frac{r}{4})^{4(0.25)} \\ \\ \frac{1509}{1500}=1+\frac{r}{4} \\ \\ 1.006-1=\frac{r}{4} \\ \\ r=4(0.006) \\ \\ r=0.024 \end{gathered}$

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3 years ago

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The measure of an angle is three times the measure of its supplementary angle. What is the measure of each angle?

madreJ [45]

Answer:

45°

135°

Step-by-step explanation:

Let the measure of one angle be x

So, measure of its supplementary angle = 3x

$\implies \: x + 3x = 180 \degree \\ \\ \implies \: 4x = 180 \degree \\ \\\implies \: x = \frac{ 180 \degree}{4} \\ \\\implies \: x = 45 \degree \\ \\ \implies \: 3x = 135 \degree$