All categories

3 years ago

Help please, just number 3, thats all im asking, thanks.

Mathematics

1 answer:

Bezzdna [24]3 years ago

4 0

The rectangle that has area 400 has width 10, so its length is 40.

A = LW; L = A/W = 400/10 = 40

The length is 10 + 0.2 = 10.2. The width is 10 + 2 = 12

The multiplication is 10.2 * 12

40.2 * 12 = 40 * 10 + 0.2 * 10 + 40 * 2 + 0.2 * 2

40.2 * 12 = 400 + 2 + 80 + 0.4

40.2 * 12 = 482.4

You might be interested in

The scale factor from 24 to 6 is 1/4. True or False ?

serious [3.7K]

Answer:

True

Step-by-step explanation:

24 × 1/4 = 6

I hope this helps!

8 0

3 years ago

Which algebraic expression represents the total area of a cube each dimension of which is 1.5x

zepelin [54]

Answer:

okkkkkkkķkkkkkkkkkkkkk

8 0

3 years ago

Read 2 more answers

The data found below measure the amounts of greenhouse gas emissions from three types of vehicles. The measurements are in tons

Y_Kistochka [10]

Answer:

A. H0 : μ1 = μ2 = μ3

Ha : μ1 ≠ 2μ ≠ μ3

2. Test Statistics = 95%

3. Critical F-Value = 3.76

4. P-Value = 2.32

5. Conclusion : Reject the null hypothesis

6. Type of vehicle does effect the amount of green house gas emissions.

Step-by-step explanation:

The correct order of the steps of a hypothesis test is given following

1. Determine the null and alternative hypothesis.

2. Select a sample and compute the critical value F-test for the sample mean.

3. Determine the probability at which you will conclude that the sample outcome is very unlikely.

4. Make a decision about the unknown population.

These steps are performed in the given sequence to test a hypothesis.

The null hypothesis is rejected or accepted on the basis of level of significance. When the p-value is greater than level of significance we fail to reject the null hypothesis and null hypothesis is then accepted. It is not necessary that all null hypothesis will be rejected at 95% level of significance. To determine the criteria for accepting or rejecting a null hypothesis we should also consider p-value.

3 0

3 years ago

AABC ~ AXYZ

Virty [35]

Answer:

The value of s is 12.

Step-by-step explanation:

We know that:

ΔABC ≅ ΔXYZ

Work:

[{6 + (1/2 x 6)} + {8 + (1/2 x 8} + {BC + (1/2 x BC) = 9 + s + YZ
=> s = 8 + (4)
=> s = 12

Hence, the value of s is 12.

Hoped this helped.

$BrainiacUser1357$

4 0

2 years ago

Select all the expressions that are equivalent to 7(2 - 3n).

Free_Kalibri [48]

Answer:

$\boxed{c. \: 14 - 21n \: \: \: \: and \: \: \: \: d. \: (2 - 3n) \times 7}$

Step-by-step explanation:

$7(2 - 3n) = (2 - 3n) \times 7\\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: =(7 \times 2) - (7 \times 3n) \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 14 - 21n$

5 0

3 years ago