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iris [78.8K]
3 years ago
10

If y varies inversely as x, and y=1 as x=2 find y for the x- value of -1

Mathematics
1 answer:
Lina20 [59]3 years ago
3 0
Inverse variation is of the form y=k/x  (direct variation is of the form y=kx)

We are given that x=2 when y=1 so using the inverse form y=k/x we can solve for the constant of variation...

1=k/2

k=2

so the equation is:

y=2/x  now they want us to find y when x=-1 so

y=2/-1

y=-2
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The function y = –16t2 + 486 models the height y in feet of a stone t seconds after it is dropped from the edge of a vertical cl
Softa [21]
Since we are looking for the time it takes for the stone to hit the ground, then it means that we set the height y to 0 ft.

y = -16t² + 486
0 = -16t² + 486
16t² = 486
t² = 30.375
t = 5.51 seconds
4 0
4 years ago
Solve. Express your answer as a simplified fraction<br><br> 7/8 divided by 9/8. Help
nasty-shy [4]

Answer:

7/9

Step-by-step explanation:

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8 0
3 years ago
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sasho [114]

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5 0
3 years ago
The Canadian labor force as of 2019 was 32.7 million. There were 30.9 million employed What the unemployment rate would be?
Afina-wow [57]

Answer:

The unemployment rate would be 5.5%.

Step-by-step explanation:

It is given that,

The Canadian labor force as of 2019 was 32.7 million.

There were 30.9 million employed

We need to find the unemployment rate.

Unemployed = labor force - employed

= 32.7 - 30.9

= 1.8 million

\text{unemployment rate}=\dfrac{\text{unemployed}}{\text{labor force}}\times 100\\\\=\dfrac{1.8}{32.7}\times 100\\\\=5.5\%

So, the unemployment rate would be 5.5%.

8 0
3 years ago
Write an equation for each:
liraira [26]
1. AB \cong CD
congruent means equal

2. AB \cong BC
bisect means to cut a line segment in two equal parts

Above the AB, CD, AB, and BC there has to be a line. I could not write that because LaTeX doesn't allow it.

3. 2x + 5 = 4x-8
You set both equal to each other

4. PA \cong AT
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Same thing goes for PA, and AT. You need to draw a line above it.

Hope that helped :)

4 0
4 years ago
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