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2 years ago

7

Lucy had 1/3 of an hour to make a sandwich and change her clothes to get ready for her piano lesson. If she spends the same amou

nt of time doing each thing, how much time will she spend doing each?

1 answer:

LekaFEV [45]2 years ago

3 0

Answer:

ok

Step-by-step explanation:

i believe its 1/3 divided by 3 if im not wrong

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The ratio of men to women working for a company is 5 to 4. If there are 261 employees total, how many men work for the company?

fiasKO [112]

Answer:

There would be 145 men employees.

Step-by-step explanation:

5/9=x/261

9x=1305

x=145

6 0

2 years ago

How do i factor the coefficent out of a variable, such as 2.4n+9.6 and -6z+12

ANEK [815]

You are factoring one or more linear expressions (but are not factoring variables).

2.4n+9.6 can be divided by 2.4 and then the result mult. by 2.4:

2.4n+9.6 = 2.4 [ n + 4 ]

Also: -6z+12= 6 [ -z + 2 ] Here I have simplified linear functions but factoring out common constant coefficients (not variables).

4 0

2 years ago

What is the measure of the indicated angle?<br> A 180°<br> B 110°<br> C 70°<br> D 90°

ikadub [295]

Answer:

D. 70°

Step-by-step explanation:

the sum of the unknown angle and 110° is 180 °

so, let the unknown angle be x

x+110 = 180

x = 180-110

x = 70°

8 0

2 years ago

An automobile manufacturer claims that its van has a 40.3 miles/gallon (MPG) rating. An independent testing firm has been contra

vovikov84 [41]

Answer:

The value of the test statistic is -2.64.

Step-by-step explanation:

The test statistic is:

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

In which X is the sample mean, $\mu$ is the expected(claimed) mean, $\sigma$ is the standard deviation and n is the size of the sample.

An automobile manufacturer claims that its van has a 40.3 miles/gallon (MPG) rating.

This means that $\mu = 40.3$

After testing 250 vans, they found a mean MPG of 39.9. Assume the standard deviation is known to be 2.4.

This means, respectively, that:

$n = 250, X = 39.9, \sigma = 2.4$

So

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

$t = \frac{39.9 - 40.3}{\frac{2.4}{\sqrt{250}}}$

$t = -2.64$

The value of the test statistic is -2.64.

7 0

2 years ago

PLS Help Asap! i will award brainliest On her way to her grandmother's house, Jackie traveled three times as many miles by train

nirvana33 [79]

Answer:

24 miles.

Step-by-step explanation:

Jackie traveled four times as many miles by bus as by foot. This means that the number of miles travelled by bus is 4 units, and the number of miles travelled by foot is 1 unit.

Jackie traveled three times as many miles by train as by bus. We know that the number of miles travelled by bus is 4 units, so the number of miles travelled by train is $4\times3=12$ units.

Total number of units: $12units+4units+1unit=17units$

$17units=34$

Divide 17:

$1 unit=2$

The number of miles travelled by train is 12 units:

$12units=2\times 12=24$

She travelled 24 miles by train.

5 0

2 years ago