2 years ago

Can someone help me solve this question.

Mathematics

2 answers:

alexdok [17]2 years ago

8 0

I’m pretty sure that it’s 4

Angelina_Jolie [31]2 years ago

5 0

Answer:

Has to be 4.

Step-by-step explanation:

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Simplify . (1/c + 1/h)/(1/(c ^ 2) - 1/(r ^ 2))

Marrrta [24]

Answer:

$\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

Step-by-step explanation:

$\frac{\frac{1}{c}+\frac{1}{h}}{\frac{1}{c^2}-\frac{1}{r^2}}$

Combine $\frac{1}{c} + \frac{1}{h}$

$\frac{\frac{h+c}{ch}}{\frac{1}{c^2}-\frac{1}{r^2}}$

Combine the bottom, too.

$=\frac{\frac{h+c}{ch}}{\frac{r^2-c^2}{c^2r^2}}$

Apply the fraction rule

$=\frac{\left(h+c\right)c^2r^2}{ch\left(r^2-c^2\right)}$

Cancel

$=\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

Therefore, $\frac{\left(\frac{1}{c}+\frac{1}{h}\right)}{\left(\frac{1}{\left(c^2\right)}-\frac{1}{\left(r^2\right)}\right)}:\quad \frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

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3 years ago

Amira pulls a 3 pound wagon 4 feet. How much work has she done?

Alex787 [66]

Answer:

12 ft-lbs is your answer

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Which expression represents the number 5i4+2i3+8i2+−4 rewritten in a+bi form?

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Remember
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i³=-i
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so
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Either way you get 45.

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