3 years ago

What are both of the unknowns?

Mathematics

1 answer:

Oduvanchick [21]3 years ago

4 0

They are 3 and 5 9/7 minus 3 is 6/7

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What is the exact volume of a sphere with a diameter of 18 cm?<br> ______ cm3

madam [21]

The formula to find the volume of a sphere is: V= $\frac{4}{3} \pi r^{3}$
Since the diameter is 18 cm, so the radius is equal to r=18/2 = 9
Now we replace r by it's value, so we get:
$\frac{4}{3} \pi 9^{3}$
$\frac{4}{3} \pi 729$
$972 \pi$
And we get approximately $3053.63 cm^{3}$
Hope this Helps :D

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2 years ago

The equation x^3+x^2+ax-4=0 has one root equal to -2. Find the value of a.

Vedmedyk [2.9K]

Answer:

a = - 4

Step-by-step explanation:

Given x = - 2 is a root then f(- 2) = 0

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- 8 - 2a = 0 ( add 8 to both sides )

- 2a = 8 ( divide both sides by - 2 )

a = - 4

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3 years ago

Find the x-intercept of the graph of the linear equation y = 2x + 4.

Tamiku [17]

Answer:

The x-intercept is -2

Step-by-step explanation:

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Of the water lilies in the pond, 43% are yellow. The others are white. A frog randomly jumps onto a lily. What is the complement

stealth61 [152]

Dont know the firat question but the propability is 43 out of 100 percent

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