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3 years ago

Can anyone help!!!!!!!! first to answer gets brainlyest!

Mathematics

2 answers:

Kipish [7]3 years ago

8 0

Answer:

- 1.48

Step-by-step explanation:

1st you have to subtract up everything you know about the numbers

next you insted of putting in all those +s you should really put - instead that prolly the reason you got all confused so the real answer is

-1.48

stiks02 [169]3 years ago

3 0

Answer:

13.48 ?

Step-by-step explanation:

he don't get enough allowance lol I'm not sure!:(

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Find the area of this shape.

Amiraneli [1.4K]

Hi.

I'm going to tell you the process, since I don't have a calculator on me. Don't wanna risk it, lol.

We can break this shake into 2 parts: a rectangle, and a triangle.

To separate them, just calculate the area of the rectangle with 4 km & 3.5 km

Since the triangle's area is half that of the rectangle, all we need to do is divide the area of the rectangle by 2 to get the area of the triangle (it's confusing when in words, eh?)

Once you find the area of both, add them together.

This should get you the area of the shape.

I hope this helped. Once again, please let me know if there are mistakes.

3 0

3 years ago

Hudson bought several cans of tennis balls. Each contained both green and yellow tennis balls. He purchased 10 green tennis ball

svp [43]

Answer:

Step-by-step explanation:

We don't know how many cans Hudson bought.

We are told, he bought:

10 green balls

5 yellow balls

Each can has 2 green balls, so there are:

10/2 = 5 cans

How can we distribute 5 yellow balls in 5 cans? Simple!

5/5 = 1

Put 1 yellow ball in each can.

So, each can will have:

2 green + 1 yellow (balls)

So, each can has 1 yellow ball

6 0

3 years ago

8. 36.8 = [11.5 – (2.5 X 3)]2

Anestetic [448]

Answer:

$[11.5-(2.5*3)]^2=16$

Step-by-step explanation:

We want to evaluate $[11.5-(2.5*3)]^2$

Let us evaluate within the parenthesis first:

$[11.5-(2.5*3)]^2=[11.5-(7.5)]^2$

$\implies [11.5-(2.5*3)]^2=[11.5-7.5]^2$

We again subtract within the bracket to obtain:

$[11.5-(2.5*3)]^2=[4]^2$

This finally gives us:

$[11.5-(2.5*3)]^2=16$

6 0

3 years ago

The area of a circular table cloth is 1,384.74 inches square. Using 3.14 for LaTeX: \pi

leonid [27]

Answer:

radius = 21

circumference = 138.88

Step-by-step explanation:

First divide the area by 3.14, this equal 441

441 is your radius squared.

Then you have to find the root of 441 which is 21.

radius = 21

diameter = twice the radius or 2 * radius

diameter = 21 * 2 = 42

diameter = 42

Then plug 42 in your circumference formula.

Which is then C = 3.14(42).

Which means the circumference is 131.88.

6 0

2 years ago

The manufacturer of a metal stand for home TV sets must be sure that its product will not fail under the weight of the TV. Since

ikadub [295]

Answer:

a) "This is an upper-tail test because the company wants to show the stands will hold 525 pounds (or more) easily."

b) "They will decide the stands are safe when they're not."

c) "They will decide the stands are unsafe when they are in fact safe."

Step-by-step explanation:

a) As the alternative hypothesis Ha is μ>575, the rejection region lays in the upper tail. Then, it is an upper-tail test.

They are testing the claim that the stand supports an average of 575 pounds or more, and are looking for statistical evidence for that claim.

"This is an upper-tail test because the company wants to show the stands will hold 525 pounds (or more) easily."

b) A Type I error happens when a true null hypothesis is rejected.

This would mean that a stands that doesn't really hold 575 pounds or more has passed the test. The stand would appear more safe than it is.

"They will decide the stands are safe when they're not."

c) A Type II error happens when a false null hypothesis failed to be rejected. In this case, a safe stand, that suports 575 pounds or more, does not pass the test.

"They will decide the stands are unsafe when they are in fact safe."

4 0

3 years ago