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3 years ago

The area of this rectangle is 30 m^2 . which is the perimeter of the rectangle ?

Mathematics

2 answers:

Lubov Fominskaja [6]3 years ago

4 0

Answer: 3m

Step-by-step explanation:

area = length * width

length = 10

30/10 = 3

3 * 10 = 30

30 = 10 * 3

irga5000 [103]3 years ago

3 0

Answer:

D. 26 m

Step-by-step explanation:

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When are conclusions said to be statistically significant?

mars1129 [50]

Answer:

If the p-value is less than a given significance level, you reject the null hypothesis and accept the alternative hypothesis.

Step-by-step explanation:

Suppose you have a business in which you'd like to make a change to increase your business. After making the change, you can use a significance test it. To conduct a significance test, you make a null hypothesis which states essentially that no effect happened. You also make an alternative hypothesis that states the change had an effect. You then test the two to see which one stands. In a significance test, using the p-value from your sample you compare it to the null and alternative hypotheses. You make a conclusion when:

If the p-value is less than a given significance level, you reject the null hypothesis and accept the alternative hypothesis since the evidence is in favor of it.

If the p-value is greater than the significance level, then you fail to reject the null hypothesis and cannot conclude. There isn't evidence in favor of the alternative hypothesis.

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3 years ago

Which of the following are irrational numbers? 3.14 √ 5 0.3333 √ -4 1/9

Galina-37 [17]

Answer:

√ -4

Step-by-step explanation:

all square roots of negative numbers are irrational

6 0

3 years ago

Find the approximate radius of a sphere with a surface area of 400 square inches.

Simora [160]

The equation for surface area of a sphere is SA=4*pi*r^2
We can plug in what we know to solve for r
400=4*pi*r^2
100=pi*r^2 (divide out the 4)
100/pi=r^2 (divide out the pi)
√(100/pi)=r (square root of both sides)
r=5.6 rounded to the nearest tenth

7 0

3 years ago

Wendy bought 7 bags. each bag costs the same amount. she paid the cashier 100$ and reduced g dollars in change. a. what read the

erma4kov [3.2K]

You would divide 100$ by 7 and get your answer remember to round your decimals.

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3 years ago

Determine the lateral area and the surface area of a right rectangular prism that has rectangular bases measuring 2" x 4" and a

morpeh [17]

So hmm notice the picture below

a rectangular prism, is just 6 rectangles stacked up to each other
so... to find the Surface Area, just get the area of each rectangle, notice is 3 pairs of similar rectangles, so, get their area and sum them up, that's the Surface Area of the rectangular prism

now, the Lateral Area, is just the area of the sides, laterals, so, that means, just get add up the areas of the rectangles upfront, on the back, and the ones on left and right sides, that's the Lateral Area of the rectangular prism.

8 0

3 years ago