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3 years ago

Branliest to correct answer please explain how you solved it

Mathematics

2 answers:

mezya [45]3 years ago

6 0

Answer:

the answer is D.60%

Step-by-step explanation:

:)))

Alex_Xolod [135]3 years ago

3 0

9514 1404 393

Answer:

D. 60%

Step-by-step explanation:

Of the 65% who study either time, 47% study on weekends. That means 65%-47% = 18% study on weeknights only.

The fraction who study on weeknights is the total of the fraction who study on weeknights only (18%) and the fraction who study on weeknights and weekends (42%). That total is ...

18% +42% = 60% . . . . fraction who study on weeknights

It can be helpful to draw yourself a Venn diagram.

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A spinner with 10 equally sized slices has 10 yellow slices. The dial is spun and stops on a slice at random. What is the probab

djverab [1.8K]

Answer:

1/10

Step-by-step explanation:

there are 10 slices, so if the probability of it landing on one of them is 1/10

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3 years ago

A researcher is interested in estimating the difference in two population proportions. A sample of 400 from each population resu

sergey [27]

Answer: (-0.086, 0.026)

Step-by-step explanation:

The confidence interval for the difference of two population proportion is given by :-

$p_1-p_2\pm\ z_{\alpha/2}\sqrt{\dfrac{p_1(1-p_1)}{n_1}+\dfrac{p_2(1-p_2)}{n_2}}$

Given : Significance level : $\alpha: 1-0.90=0.10$

Critical value : $z_{\alpha/2}=1.645$

Sample size : $n_1=400,\ n_2=400$

$p_1=0.61,\ p_2=0.64$

The 90% confidence interval for the difference in the population proportions will be :-

$0.61-0.64\pm\ (1.645)\sqrt{\dfrac{0.61(1-0.61)}{400}+\dfrac{0.64(1-0.64)}{400}}\\\\\approx-0.03\pm0.056=(-0.03-0.056,-0.03+0.056)\\\\=(-0.086, 0.026)$

7 0

3 years ago

if tzs 2,500,000 is invested at an interest rate of 9.5%,compounded twice monthly, how long will it take for the investment to r

Oksanka [162]

9514 1404 393

Answer:

11 years, 7 months

Step-by-step explanation:

When the investment reaches its desired value, it will be 3 times the original amount. So, we are looking for the number of half-month periods (n) of compounding such that ...

(1 +0.095/24)^n = 3

Taking logarithms, we have ...

n·log(1.003958333...) = log(3)

n = log(3)/log(1.009358333...) ≈ 278.09

This is 278.09/24 ≈ 11.59 years.

It will take about 11 years and 7 months for the investment to reach the desired value.

<em>Additional comment</em>

The amount will be about tzs 2,758 short after 11 years 7 months. It will exceed the desired amount after 2 more days' interest is added.

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3 years ago

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Anarel [89]

The answer is a or e

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4 years ago

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Which equation represents the linear function that is shown on the graph below ?

Zielflug [23.3K]

Answer:

First one

Step-by-step explanation:

Y=1/2x+4

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3 years ago