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3 years ago

What's 27.63 subtracted by 60

Mathematics

2 answers:

makvit [3.9K]3 years ago

8 0

Answer:

-32.37

Step-by-step explanation:

Margarita [4]3 years ago

7 0

Answer:

-32.37

Step-by-step explanation:

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-17.677686

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3 years ago

How do I solve thses?

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Step-by-step explanation:

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4 years ago

The sum of three consecutive odd integers is 17 less than four time the smallest integers

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3 years ago

Two vertical poles of heights 60 ft and 80 ft stand on level ground, with their bases 100 ft apart. A cable that is stretched fr

Andreyy89

Answer:

Step-by-step explanation:

Given

height of two Poles are 60 and 80 ft

Distance between them is 100 ft

Let x be the distance of Pole of ht 80 ft from Point of stretch

thus length of rope is given by

$L=L_1+L_2$

$L_1=\sqrt{80^2+x^2}$

$L_2=\sqrt{60^2+(100-x)^2}$

$L=\sqrt{80^2+x^2}+\sqrt{60^2+(100-x)^2}$

differentiate w.r.t x we get

$\frac{\mathrm{d} L}{\mathrm{d} x}=\frac{2x}{2\sqrt{80^2+x^2}}-\frac{2\left ( 100-x\right )}{\sqrt{60^2+\left ( 100-2x\right )^2}}$

Put $\frac{\mathrm{d} L}{\mathrm{d} x}=0$ to get minimum value

$\frac{2x}{2\sqrt{80^2+x^2}}=\frac{2\left ( 100-x\right )}{\sqrt{60^2+\left ( 100-2x\right )^2}}$

squaring

$x^2\left ( (100-x)^2+60^2\right )=(100-x)^2(80^2+x^2)$

Rearranging

$28x^2-1800x+640000=0$

$x=\frac{400}{7}$

thus $L_1=98.312 ft$

$L_2=73.73 ft$

$L=172.04 ft$

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3 years ago

How do I solve w(x)=4x+5; find w(-8)?

madam [21]

W(x) = 4x + 5

w(-8) = 4(-8) + 5 = -32 + 5 = -27

6 0

4 years ago