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3 years ago

Tasha claims that her skateboard weighs about 3 pounds. Is Tasha's claim reasonable? Explain.

Mathematics

1 answer:

Leto [7]3 years ago

4 0

Her claim is reasonable because she can predict how much her skateboard weighs

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A circle is drawn to represent a pizza with a 12

fredd [130]

Answer:

Step-by-step explanation:

diameter/2 = radius

12/2 = radius

radius = 6

The outer edge means you are measuring the circumference of the pizza.

Circumference = 2(pi)(radius)

Circumference = 2(pi)(6)

You are only finding 1/8 of the circumference

Therefore you are multiplying the circumference by 1/8

Length of 1 slice = (1/8)((2)(pi)(6)) = (12/8)(pi) = (3/2)(pi) = (3(pi)) / (2) or 4.71 inches

3 0

1 year ago

An article presents voltage measurements for a sample of 66 industrial networks in Estonia. Assume the rated voltage for these n

kramer

Answer:

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 232 V

Sample mean, $\bar{x}$ = 231.5 V

Sample size, n = 66

Sample standard deviation, s = 2.19 V

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 232\\H_A: \mu \neq 232$

We use Two-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n-1}} }$ Putting all the values, we have

$t_{stat} = \displaystyle\frac{231.5- 232}{\frac{2.19}{\sqrt{66}} } = -1.8548$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = \pm 1.9971$

Since,

$|t_{stat}| > |t_{critical}|$

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

4 0

2 years ago

a teacher awarded 50 marks to his least student in a class test. How many marks was awarded to the best student if he was 40% be

LenaWriter [7]

Answer:

90 marks per that student

4 0

2 years ago

What can you add to 30 to make 50?

Archy [21]

20, because 30+20 is 50.

4 0

1 year ago

Read 2 more answers

Just giving y’all some points :) I’ll give Brainliest too <3

Bezzdna [24]

Answer:

Awe your so nice <3

Step-by-step explanation:

3 0

2 years ago