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3 years ago

9

a and b together can do a work in 10 days B and C together can do the same work in 15 days a b and c together can do the same wo

rk in 8 days then how many days can B alone do this work

1 answer:

trasher [3.6K]3 years ago

4 0

Answer:

hauqvuauq shuavauvqsjahw w

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Is an estimate for the percent of a number always,sometimes or never greater than actual percent of the number

posledela

It would be sometimes because it can be 82.2% but if you round it the closest one would be 80% if it was 84.7% its closer to 85 so it would be 85% I hope I helped you out rate the answer if I got it right thanks!

3 0

3 years ago

Who walks at a faster rate: someone who walks 60ft in 10sec or someone who walks 42ft in 6sec

julia-pushkina [17]

Answer:

42 ft in 6 seconds

Step-by-step explanation:

The person whom walks a greater distance in lees time is faster

7 0

3 years ago

Solve 6 >b÷ (-3). Graph the solution.<br> The solution is..

olchik [2.2K]

Answer:

b>-18

Step-by-step explanation:

inequality form:b>-18

interval notation:(-18,inf.)

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2 years ago

nA car dealer who sells only late-model luxury cars recently hired a new salesperson and believes that this salesperson is selli

7nadin3 [17]

Answer:

The value of an appropriate test statistic for the car dealer to use is -4.

Step-by-step explanation:

The null hypothesis is:

$H_{0} = 4600$

The alternate hypotesis is:

$H_{1} < 4600$

The test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

In this problem:

$X = 4100, \mu = 4600, \sigma = 500, n = 16$

Then

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{4100 - 4600}{\frac{500}{\sqrt{16}}}$

$t = -4$

The value of an appropriate test statistic for the car dealer to use is -4.

8 0

3 years ago

I need help please.

Lina20 [59]

The 1st choice, the third and the fifth are correct
because 26/9 = 3
and 12/4 = 3
and 21/7 = 3

8 0

3 years ago