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2 years ago

Questions and Answers1.A is 40% of B. what percentagesDiscussA6090B.

Mathematics

1 answer:

ratelena [41]2 years ago

5 0

Answer:

yeah thats right good job keep up the good work and keep doing ur thing good job

Step-by-step explanation:

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Sandy has $5000 invested in three accounts. One account bears 2% annual interest, another 3%, and the other 5%, and she earned $

Harlamova29_29 [7]

hello there

This is a tricky question but i think i have solved it

Account 1: $100

Account 2: $150

Account 3: $250

If my answer helped please mark me as brainliest thank you and have a great day!

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2 years ago

A survey of 1 comma 558 randomly selected adults showed that 522 of them have heard of a new electronic reader. The accompanying

sineoko [7]

Answer with explanation:

Let p be the proportion of adults have heard of the new electronic reader.

Given claim : The accompanying technology display results from a test of the claim that 38% of adults have heard of the new electronic reader.

i.e. $p=0.38$

Then , the set of hypothesis will be :-

$H_0: p=0.38\\\\H_a:p\neq0.38$

Since, the alternative hypothesis is two tailed , so the test is two-tailed test.

Also, it is given that the sample size : $n=1558$

Number of adults showed that they have heard of a new electronic reader=522

So the sample proportion for adults have heard of the new electronic reader : $\hat{p}=\dfrac{522}{1558}\approx0.34$

The test statistic for proportion is given by :-

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\\Rightarrow\ z=\dfrac{0.34-0.38}{\sqrt{\dfrac{0.38(1-0.38)}{1558}}}\\\\\\\Rightarrow\ z=-3.25279036541\approx-3.25$

By using standard normal distribution table , the P-value for two tailed test corresponds to the obtained z-value = $=0.0011541$

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3 years ago

What is the equation of the line that passes through the point (7,2) and has a slope of 1?

Tema [17]

Answer:

x-y=5

Step-by-step explanation:

If a line has a slope of 1, its function can be write as x-y=c

insert point (7,2),t then we can find out the constant c=5, so the equation of this line is x-y=5

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2 years ago

Last year, 140 people in a community had cell phones. This year, the number of people in the community with cell phones has incr

Murljashka [212]

the number has been increased by 79

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2 years ago

Solve for x. 5(x – 10) = 30 – 15x x = 1 x = 4 x = 5 x = 8

jarptica [38.1K]

chan eil agad ach sgrùdadh a dhèanamh air google!

5x-50 = 30-15x, 20x = 80, x = 4,

x=4!

8 0

2 years ago

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Questions and Answers1.A is 40% of B. what percentagesDiscussA6090B.​

Questions and Answers1.A is 40% of B. what percentagesDiscussA6090B.