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3 years ago

6

Evaluate the piecewise function for f(8) can you explain how to do this problem

1 answer:

pentagon [3]3 years ago

3 0

Answer:

bru i can barely do my own work right fr

Step-by-step explanation:

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10 marbles are placed in a bag and two of them are randonly drawn.

Gelneren [198K]

The problem does not say anything about how many of the marbles are yellow but if you put the first one back in the bag then it is an independent probability and each one would be the same individual probability. Since the problem doesn't say and I don't know if you have it somewhere else, I'll do it as an example.

Let's say there were 6 of the 10 marbles were yellow. So the probability of the first one is 6/10 and so is the second one 6/10. To find the total probability you multiply them together 6/10*6/10=36/100=9/25

Hope that helps. If you can tell me how many yellow there are I will show the work for the specific problem.

4 0

3 years ago

Jenny buys a new shirt that costs $22. If sales tax is 8%, how<br> much will the tax be?

kap26 [50]

Answer:

$1.76

Step-by-step explanation:

$22 * .08 = $1.76

8 0

3 years ago

Read 2 more answers

In ΔXYZ, XY = 6.32, YZ = 5.83, and XZ = 11.05. m∠Y = º.

Dominik [7]

Answer: 130.8 degrees

Explanation:

The problem can be solved by using the cosine theorem:

$a^2 = b^2 + c^2 - 2bc cos \alpha$ (1)

where

a,b,c are the lengths of the three sides of the triangle

$\alpha$ is the angle between b and c

In this problem, we can identify a,b,c, with:

a = XZ = 11.05

b = XY = 6.32

c = YZ = 5.83

So, the angle $\alpha$ corresponds to the angle m∠Y. Re-arranging eq.(1), we find

$cos \alpha = \frac{b^2+c^2-a^2}{bc}=\frac{(6.32)^2+(5.83)^2-(11.05)^2}{2(5.83)(6.32)}=-0.654$

So, the angle is

$\alpha=cos^{-1}(-0.654)=130.8^{\circ}$

3 0

4 years ago

Read 2 more answers

What is the y-intercept of the function described in the table?

AysviL [449]

Answer:

10

Step-by-step explanation:

1 is 8, 2 is 6, 3 is 4, and 4 is 2. The pattern is -2, so to get it when x=0 you just add 2 to 8

7 0

3 years ago

Cruz is training to compete in a triathlon. He left his house at 6 : 00 and ran until 7 : 30 . Then he rode his bike until 9 : 4

uysha [10]

Answer:

The correct answer is Cruz's running speed is 10 miles per hour and his biking speed is 16 miles per hour.

Step-by-step explanation:

Let the speed of Cruz when running is s miles per hour and speed of cruz biking is 1.6s miles per hour.

Cruz ran for 90 minutes and rode is bike for 135 minutes.

Total distance covered by Cruz is $\frac{90}{60}$ × s + 1.6s × $\frac{135}{60}$

This distance is given to be 51 miles.

⇒ $\frac{90}{60}$ × s + 1.6s × $\frac{135}{60}$ = 51

⇒ 90s + 216s = 3060

⇒ 306s = 3060

⇒ s = 10

Cruz's running speed is 10 miles per hour and his biking speed is 16 miles per hour.

6 0

3 years ago