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3 years ago

Please help me i forgot how to do this

Mathematics

1 answer:

ICE Princess25 [194]3 years ago

5 0

Basically, unit rates are special ratios with two different terms with two different units.

1. 3 inches of rain in 6 hours
Answer: 3 inches:6 hours

2. 70 miles in 2 hours
Answer: 70 miles:2 hours.

It's easy!

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I'm a election 4713 people voted candidate B received 2 thirds of the votes. How many votes did candidate b receive

madam [21]

Answer:

3142

Step-by-step explanation:

4713 x 2/3

4 0

3 years ago

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.8 parts

Alexxandr [17]

Answer:

The value of the test statistic is $t = 2.67$

Step-by-step explanation:

The null hypothesis is:

$H_{0} = 7.8$

The alternate hypotesis is:

$H_{1} \neq 7.8$

Our 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, we have that:

$X = 8.2, \mu = 7.8, \sigma = 0.6, n = 16$

Then

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

$t = \frac{8.2 - 7.8}{\frac{0.6}{\sqrt{16}}}$

$t = 2.67$

The value of the test statistic is $t = 2.67$

5 0

3 years ago

Write $3.9 out of $60 as percentage

Norma-Jean [14]

Answer:

Step-by-step explanation:

$\frac{3.9}{60}*100=\frac{13}{2}$

= 6.5%

4 0

2 years ago

Maristella is constructing an isosceles triangle to use as a model in her Algebra class. The perimeter of her triangle is 24 cm.

Vlada [557]

Isolating s, the equation written in terms of s is:

$s = 12 - 0.5b$

-------------------------

The equation for the length of the third side, as stated in the problem,("Maristella uses the equation b = 24 – 2s to find b, the length of the triangle's third side") is:

$b = 24 - 2s$