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2 years ago

Calculate. If possible, reduce your answers. 12+3·(11−15) =

Mathematics

1 answer:

katrin [286]2 years ago

6 0

Answer:

Step-by-step explanation:

(11−15) = 4

12+3=15

15x4=60

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You have used the significant level of 0.01 to estimate the average hours of television viewing for the NJ students. What is the

Lorico [155]

Answer:

Step-by-step explanation:

Given : You have used the significant level of 0.01 to estimate the average hours of television viewing for the NJ students.

To Find :What is the chance that our interval estimate does not contain the true population mean?

Solution:

We are given that You have used the significant level of 0.01 to estimate the average hours of television viewing for the NJ students.

So, α=0.01

Significance level indicates a risk of concluding that a difference exists when there is no actual difference.

So, The chance that our interval estimate does not contain the true population mean is 0.01

So, The chance that our interval estimate does not contain the true population mean is $0.01 \times 100 = 1\%$

Hence Option D is true

8 0

3 years ago

Find the radius and diameter of a circular puddle whose

o-na [289]

Answer:

$r = 35cm$

Step-by-step explanation:

Given

$C = 220cm$

$\pi = \frac{22}{7}$

Required

Determine the radius

Circumference (C) is calculated as:

$C = 2\pi r$

Where r represents radius

Substitute values for C and $\pi$

$220cm = 2 * \frac{22}{7} * r$

$220cm = \frac{44}{7} * r$

Multiply through by 7/44

$\frac{7}{44} * 220cm = \frac{7}{44} * \frac{44}{7} * r$

$r = \frac{7}{44} * 220cm =$

$r = \frac{7 * 220cm }{44} =$

$r = \frac{1540\ cm}{44}$

$r = 35cm$

Hence, the radius is 35cm

6 0

2 years ago

Which rule describes the relationship between the input and output pairs in the following table?

laila [671]

Answer:

Subtract 5 from input.

Step-by-step explanation:

10-5=5

8-5=3

6-5=1

Note:if you need to ask question let me know about it.

3 0

2 years ago

What is the area of the parallelogram? 48 sqrt3 cm^2 48 cm^2 24 sqrt3 cm^2 24 cm^2

Salsk061 [2.6K]

The area of a parallelogram is base times height.

We can find the height by deriving a right triangle from the 60 degree angle and the 6 cm hypotenuse

sin(60°) = opp/hyp = x/6
√3/2 = x/6 Multiply both sides by 6
3√3 = x
x = 3√3

The height is 3 √3

Area = base x height
Area = 3√3 * 8
Area = 24 √3 cm²

Answer is C) 24 √3 cm²

3 0

2 years ago

Helen and Nicola share some money into the ratio 1:3 , what fraction of the total does Helen have ?

Aneli [31]

Answer:

If we expect that it is respective then Helen will have 25% of the money

Step-by-step explanation:

8 0

3 years ago