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elena-14-01-66 [18.8K]

3 years ago

10

Raul deposited $3000 into a bank account that earned simple interest each year. After 3.5 years, he had earned $262.50 in intere

st.

1 answer:

luda_lava [24]3 years ago

7 0

I'm not sure what you're asking

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The hourly wage without tip is $12

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3 years ago

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I’m having trouble with this question. if anyone can answer it would mean a lot

natulia [17]

Answer:

Step-by-step explanation:

x = - 48/-8 = 6

c = c^2/c^1 = c^(2-1) = c^1

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3 years ago

Help me I don’t understand I’m very confused

a_sh-v [17]

It’s 3 notice how there’s the width on the lower section

6 0

3 years ago

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Please help! just q4 and q5 thank you

Firdavs [7]

First exercise

Given

$\dfrac{3x+1}{x+4}=\dfrac{2}{3}$

We can cross multiply this equation to get

$3(3x+1)=2(x+4)$

Expand both terms:

$9x+3=2x+8$

Subtract 2x from both sides:

$7x+3=8$

Subtract 3 from both sides:

$7x=5$

Divide both sides by 7:

$x=\dfrac{5}{7}$

Second exercise

Let $p,o,a$ be the number of pine, oath and ash trees. We are given:

$\begin{cases}\frac{p}{o} = \frac{5}{8} \iff p = \frac{5o}{8}\\\frac{o}{a} = \frac{2}{3} \iff o=\frac{2a}{3}\\p+o+a=300\end{cases}$

We can substitute the expression for p of the first equation in the last equation to get

$p+o+a=300\iff \dfrac{5o}{8}+o+a=300 \iff \dfrac{13}{8}o+a=300$

Now we use the second equation, to express o in terms of a:

$\dfrac{13}{8}o+a=300 \iff \dfrac{13}{8}\cdot \dfrac{2}{3}a+a=300 \iff \dfrac{25}{12}a = 300 \iff a = 300\cdot \dfrac{12}{25} = 144$

3 0

3 years ago