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Ksju [112]
2 years ago
10

ASAP PLZZ HELP BRAINLEST TO THE BEST ANSWER IF YOU DONT KNOW DONT ANSWERRRRRRRRR

Mathematics
2 answers:
uysha [10]2 years ago
8 0

Answer:

dont delete the answer this time

Step-by-step explanation:

soft sounds are better because the energy in the waves hitting your eardrum and if there is too much energy it could damage your ear.

Verdich [7]2 years ago
7 0

Answer:

soft sounds are better because the energy in the waves hitting your eardrum and if there is too much energy it could damage your ear.

Step-by-step explanation:

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3. Translate: 5 less than twice a number
Tom [10]
A because if you think about it 5 less witch is - than twice witch is 2 then add you’re x
5 0
3 years ago
The average systolic blood pressure was found to be 140 mm for people who have high responsibility jobs, specifically investment
defon

Answer:

t = -1.428

Step-by-step explanation:

Average blood pressure among people with high responsibility jobs = u = 140 mm

Number of people sampled for the study = n = 51

Average blood pressure of the sample = x = 139 mm

Standard deviation of the sample = s = 5 mm

The claim is that practicing yoga decreases the blood pressure. So we have to test that after practicing yoga, the average blood pressure will be lesser than 140. Based on this we can formulate the null and alternate hypothesis as:

Null Hypothesis: \mu \geq 140

Alternate Hypothesis: \mu < 140

Since population standard deviation is not known, we cannot use z-distribution for this test. We are given the value of sample standard deviation, so t-test will be used for this case.

Test statistic is calculated as:

t=\frac{x-u}{\frac{s}{\sqrt{n} } }

Using the values in this formula gives us:

t=\frac{139-140}{\frac{5}{\sqrt{51}}}\\\\ t=-1.428

Therefore, the value of test statistic is -1.428

4 0
2 years ago
Change each fraction or mixed number to a percent. a. 2/5 b. 7/20 c. 1 11/16 d. 14 1/4
QveST [7]

Answer:

a. 20% b. 35% c. 1.6875 d. 14.25

8 0
2 years ago
Read 2 more answers
Parker marks sixths on a number line. He writes
Paul [167]

Answer:

1 and 1/6

Step-by-step explanation:

the first mark after 1 would be a sixth of the way to the second whole number, 2

3 0
2 years ago
If you solve the equation for ax+by/c=d for x, what would you get?
Xelga [282]

<u>Answer:</u>

x=d/a - by/ac

<u>Steps:</u>

ax+by/c=d

(cax+by)/c=d

cax+by=cd

cax=cd-by

x=(cd-by)/ca

x=cd/ca - by/ca

x=d/a - by/ac

5 0
2 years ago
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