Can someone help me figure this out pls and thank you

Mathematics

2 answers:

Harlamova29_29 [7]3 years ago

8 0

The answer will be 13/3 :) hope you get an A+

Novay_Z [31]3 years ago

6 0

$\frac{13}{3}$ is the answer.

This is because the slop is found by the difference of ys over the difference of xs.

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If a wheel with a radius of 30 inches spins at a rate of 500 revolutions per minute, find the approximate linear velocity in mil

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15,000 inches per minute = 900,000 inches per hour (multiply by 60)

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d. A hypothesis is derived from the evidence at hand; the evidence produces the hypothesis.

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Betsy, a recent retiree, requires 5,000 per year in extra income. She has $70,000 to invest and can invest in B rated bonds payi

Kisachek [45]

B = amount invested in B bonds

c = amount invested in CDs

so.. she's got $70000 burning a hole in her pocket and she wants to invest them to get a yield of 5000 in interest from both of them.

we know that, whatever "c" and "b" are, we know that b + c = 70,000.

how much is 13% of b? well, (13/100) * b, or 0.13b
how much is 5% of c? well, (5/100) * a, or 0.05c

we know that, the yield or interest earned from them, must be 5000, thus 0.13b + 0.05c = 5000.

$\bf \begin{cases}
b+c=7000\implies \boxed{c}=70000-b\\
0.13b+0.05c=5000\\
----------\\
0.13b+0.05\left( \boxed{70000-b} \right)=5000
\end{cases}
\\\\\\
0.13b-0.05b+3500=5000\implies 0.08b=1500\implies b=\cfrac{1500}{0.8}
\\\\\\
b=18750$

how much did she invest in CDs? well, c = 70000 - b.

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