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2 years ago

Which is the directrix of a parabola with equation x2 = 8y?

Mathematics

1 answer:

olga_2 [115]2 years ago

4 0

Answer:

Y=-2

Step-by-step explanation:

You would use the vertex form to find the directrix

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Jeanette can swim 45 meters in 30 seconds. How far can she probably swim in 90 seconds?

shtirl [24]

H. 135 meters

Work: 45 meters in 30 seconds 45/30= 1.5 so 90x1.5 = 135 meters

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2 years ago

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What is 16% of 90 helpppp plssss

Lunna [17]

Answer:

first off, welcome to brainly, second, your answer is 14.4

Step-by-step explanation:

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2 years ago

Cubed root x cubed root x2

Yuki888 [10]

Answer:

Final answer is $\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}=x$ .

Step-by-step explanation:

Given problem is $\sqrt[3]{x}\cdot\sqrt[3]{x^2}$ .

Now we need to simplify this problem.

$\sqrt[3]{x}\cdot\sqrt[3]{x^2}$

$\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}$

Apply formula

$\sqrt[n]{x^p}\cdot\sqrt[n]{x^q}=\sqrt[n]{x^{p+q}}$

so we get:

$\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}=\sqrt[3]{x^{1+2}}$

$\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}=\sqrt[3]{x^{3}}$

$\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}=x$

Hence final answer is $\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}=x$ .

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3 years ago

Please help:<br> In Δ ABC, sin A=88, sin B=42, and a =17, find the length of b.

iren2701 [21]

Answer:

Step-by-step explanation:

Use the law of sines.

$\frac{sin A}{a} = \frac{sin B}{b} \\$

Plug values in.

$\frac{sin88}{17} = \frac{sin42}{b}\\$

Cross multiply.

$bsin88 = 17sin42\\b = 11.38$

Hope that helps.

6 0

3 years ago

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Round 3 3/8 to the nearest whole number

777dan777 [17]

3 3/8 to the nearest whole number is 3 because 3/8 < 1/2

4 0

3 years ago