4 years ago

Help help help help help

Mathematics

1 answer:

Semenov [28]4 years ago

4 0

Your answers are a and d hope this helps

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When 7 is subtracted from two third of the square of a number it becomes 17 find the number

Dmitry [639]

Answer: 6 or -6

hello,

Step-by-step explanation:

Let say n the number

$\dfrac{2}{3} *n^2-7=17\\\Longrightarrow\ \dfrac{2}{3} *n^2=24\\\Longrightarrow\ n^2=\dfrac{3*24}{2}\\\Longrightarrow\ n^2=36\\\Longrightarrow\ (n-6)(n+6)=0\\\\n=6\ or\ n=-6\\$

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3 years ago

7 + x - 15 = -2.67 solve for x

xz_007 [3.2K]

Answer:

5.33

Step-by-step explanation:

Move your numbers so that they're separate from the variables. You should now have x = -2.67 + 8; x = 5.33

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3 years ago

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What is the slope of a line that is perpendicular to the line y =1/6x + 4

kicyunya [14]

The answer is-6 because if you use a calculator it’s -6

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3 years ago

Julia is allowed to watch no more than 5 hours of television. So far this week, she has watched 1.5 hours. Write and solve an in

alexandr402 [8]

5-1.5= 3.5
3.5 hours
5-h= t
h= hours of watching
t= time remaining

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3 years ago

What is cot x(sin^2x+cos^2x)

shusha [124]

Answer:

cot(x)

Step-by-step explanation:

$cot\theta(sin^2\theta+cos^2\theta)$

$cot\theta(1)$

$cot\theta$

Recall the Pythagorean Identity $sin^2x+cos^2x=1$

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2 years ago