X−(−7)=−10 . Addition Equation: x=

5(5t-2) = -35 show how to solve the given equation

Aloiza [94]

Distribute the 5
25t-10=-35
+10 +10
25t =-25
divide by 25 on both sides
t=-1

8 0

2 years ago

Please help ASAP ASAP

USPshnik [31]

Answer:

2 R2

Step-by-step explanation:

3x2 is the closest youll get to 8.

8-6=2 so 2 is your R

7 0

2 years ago

Read 2 more answers

Plssss i need help ASAPP

gizmo_the_mogwai [7]

Answer:

1 ) 1 cubic centimeter = 0.000001 cubic meters

2 ) 4 cubic meters = 4000000 centimeters

3 ) 948 cubic meters = 948000 liters

Step-by-step explanation:

1 )

Conversion

1 centimeter = 0.01 meters

1 cubic centimeter

= 0.01 x 0.01 x 0.01

= 0.000001 cubic meters

72 cubic meters

= 72 x 0.000001

= 0.000072 cubic centimeters

2 )

Conversion

1 meter = 100 centimeter

1 cubic meter

= 100 x 100 x 100

= 1000000 cubic centimeters

4 cubic meters

= 4 x 1000000

= 4000000 centimeters

3 )

Conversion

1 cubic meter = 1000 liters

948 cubic meters

= 948 x 1000

= 948000 liters

7 0

2 years ago

PLEASE HELP THIS Q IS ON A QUIZ ABOUT RATIO AND PROPORTION

sergij07 [2.7K]

We want to see which offer is the best one to buy 40 batteries, by using algebra we will see that the best offer is offer-B

<h3>How to find the best offer?</h3>

Here we just need to see which would be the cost of 40 batteries which each offer.

For offer-A, a pack of 4 costs £2.52 and we have 1/3 off.

For 40 batteries the cost will be 10 times the above quantity, we get:

10* £2.52 = £25.20

But there is a 1/3 off, so the cost would be 2/3 of the above quantity:

£25.20*(2/3) = £16.80

For offer-B we know that a pack of 5 costs £2.75, so you need to buy 8 of these. And for each 3 you get one free, so you need to buy 6 (and get 2 free ones). The cost of 6 of these is:

6*£2.75 = $16.50

From this, we can conclude that offer-B is the best one.

If you want to learn more about algebra, you can read:

brainly.com/question/8120556

5 0

2 years ago

An online streaming service providing television programs claims that a 30-minute program will stream with advertisements that a

trapecia [35]

Answer:

The p-value is significantly low(<0.01), which means that the data provides convincing evidence that the true mean advertisement length is longer than 45 seconds.

Step-by-step explanation:

An online streaming service providing television programs claims that a 30-minute program will stream with advertisements that average 45 seconds. Test if the true mean advertisement length is longer than 45 seconds.

At the null hypothesis, we test if the mean time is of 45 seconds, that is:

$H_0: \mu = 45$

At the alternate hypothesis, we test if the mean is more than 45 seconds, that is:

$H_1: \mu > 45$

The test statistic is:

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

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

45 is tested at the null hypothesis:

This means that $\mu = 45$

They recorded the times of 21 randomly selected advertisements. The mean and standard deviation for these times are 46.67 and 2.78.

This means that $n = 21, X = 46.67, s = 2.78$

Value of the test-statistic:

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

$t = \frac{46.67 - 45}{\frac{2.78}{\sqrt{21}}}$

$t = 2.75$

P-value of the test and decision:

The p-value of the test is the probability of finding a sample mean above 46.67, which is a right-tailed test, with t = 2.75 and 21 - 1 = 20 degrees of freedom.

With the help of a calculator, this p-value is of 0.0062.

The p-value is significantly low(<0.01), which means that the data provides convincing evidence that the true mean advertisement length is longer than 45 seconds.

6 0

2 years ago