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DedPeter [7]
2 years ago
7

PLEASE HELP ITS DUE TODAY

Mathematics
1 answer:
san4es73 [151]2 years ago
7 0

Answer:

Its either answer B. or D. Sorry if I'm wrong and I hope this sorta helps.

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Help with 4 Multiple-choice
kykrilka [37]

Answer:

1. D

2. A

3. C

4. A

Step-by-step explanation:

7 0
2 years ago
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Please help!!!!!!! How many inches would a point on the outer edge of the large gear travel in a 150º rotation? (The gear has a
damaskus [11]
In a full rotation, 360°, a point on the edge of a gear would travel a distance equal to its circumference.  The circumference of a circle is:

C=2πr, and since we are only traveling 150°, we need to set up an appropriate ratio for circumference to the distance the point travels:

d/C=150/360

d=5C/12 and since C=2πr

d=10πr/12

d=5πr/12, and since r=4in

d=5*4π/12 in

d=20π/12 in

d=5π/3 in

d≈5.24 in (to nearest hundredth of an inch)
4 0
2 years ago
The perimeter of a semicircle is 25.7 feet. What is the semicircle's radius?<br><br> Use 3.14 for ​.
jarptica [38.1K]

Answer: 4.09

Step-by-step explanation:

25.7 divided by pie is 8.18 which is the diameter. divide that by 2 and u get the radius.

7 0
2 years ago
To get the echo of a positive integer, we write it twice in a row without a space. For example, the echo of 2022 is 20222022. Is
Lynna [10]

The <em>echo</em> number 20222022202220222022 is the <em>perfect</em> square of 4496890281.

<h3>What echo number is a perfect square</h3>

An <em>echo</em> number has a <em>perfect</em> square if its square root is also a <em>natural</em> number. After some iterations we found that <em>echo</em> number 20222022202220222022 is a <em>perfect</em> square:

\sqrt{20222022202220222022} = 4496890281

The <em>echo</em> number 20222022202220222022 is the <em>perfect</em> square of 4496890281. \blacksquare

To learn more on natural numbers, we kindly invite to check this verified question: brainly.com/question/17429689

8 0
2 years ago
What are the critical values for a two-tailed test with a 0.01 level of significance when n is large and the population standard
Sunny_sXe [5.5K]
For a two-tailed test we need to halve 0.01, giving 0.005. Then we need to sutract 0.005 from 0.5, giving 0.5 - 0.005 = 0.495. Looking up the p value of 0.495 in an inverse normal probability table we obtain the value z = 2.5758. Therefore the critical values are -2.5758 and 2.5758.
4 0
3 years ago
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