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Semmy [17]
3 years ago
13

The length of a rectangle is four times its width. if the perimeter of the rectangle is 40 centimeters, what is its area?

Mathematics
1 answer:
AURORKA [14]3 years ago
4 0
The answer would be 64.
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This is hard for me :(
Luden [163]

Remark

A

You can do the same thing with a program called Desmos. Using this program, I've put A and B (the graphs) in Desmos and attached it to this Answer.

You could just do the same with your graphing calculator if you have one.

The problem is that my graphing calculator won't draw the blue line which is x = - 2

So go to Desmos and put in 2 graphs. the first one is y = - 1/2 x + 3 in red

The second is x =- 2. These are entered on the left of Desmos.

The blue line is x = - 2. You notice that the intersect point is (-2,4). Run your finger straight across until you hit 4. That's all you have to do for the A part.

B

The question has 3 blanks. The first 2 come from the question directions to see if you read those directions. Always a good idea to do that.

first blank  is x = - 2

second blank is x = - 2

Third blank is - 7

The red line is y = 3/2 x - 4

The blue line is x = -2

8 0
4 years ago
There are two jars. One jar contains 2 red gum balls , 3 green gum balls ,and 1 yellow gumball.the other jar contains 2 blue bal
nexus9112 [7]
There are 3 green gumballs out of 6 in total. So, the odds of Jeff pulling out a green gum ball is 3/6, or 1/2.

There are 2 blue balloons out of 5 in total. So, the odds of Jeff pulling out a blue balloon is 2/5.

Therefore, the combined odds of Jeff pulling out a green gum and a blue balloon is 1/2 multiplied by 2/5, which is 2/10, or 1/5, Making the answer C.

TL;DR: The answer’s C.
4 0
3 years ago
Read 2 more answers
1 The distance on the number line from a to 7 is 0.5. Which of the following could be the value of a ? A) 7.5 B) -3.5 C 0.5 D 6.
alukav5142 [94]

Answer:

6.5

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Find the lengths of the missing sides in the triangle. Write your answers as integers or as decimals rounded to the nearest tent
nalin [4]

Answer:

The last one (x=11.3, y=8).

Step-by-step explanation:

1) There are three trigonometric ratios for right-angled triangles.

sin()=\frac{opposite}{hypotenuse}\\cos()=\frac{adjacent}{hypotenuse}\\tan()=\frac{opposite}{adjacent}

In a right triangle, the hypotenuse, h, is the side opposite the right angle. Relative to the acute angle θ, check the attachment, the legs are called the opposite side, o, and the adjacent side a.

2) In this case, we are given a length and an angle to find x and y.

Let's find x first. To find x we need to use sin()=\frac{opposite}{hypotenuse}.

sin(45)=\frac{8}{x}\\sin(45)x=8\\x=\frac{8}{sin(45)} \\x=11.31

Find y.

Notice that, we can use the Pythagorean Theorem (c^2=a^2+b^2) to find y.

c^2=a^2+b^2

11.31^2=8^2+b^2\\11.31^2 - 8^2 = b^2\\63.9161 = b^2\\\sqrt{63.9161} = b\\b = 7.99

3) Round them off to the nearest tenth.

x=11.31\\x=11.3

y=7.99\\y=8

Therefore, the correct choice is the last one (x=11.3, y=8).

4 0
3 years ago
Which of the following statements are true about checking accounts: (select all that apply) a:Some checking accounts require a l
andriy [413]

Answer:

A, B, C, D, F, G

Step-by-step explanation:

A. In order to stop overpayment when your account balance is low, some banks do require a low minimum balance so you don't use more money than you have

B. You can withdraw funds from a checking account easily by using an ATM or go into the bank.

C. There are many different kinds of checking accounts designed for specific activities.

D. One type of account is actually a Money Market account.

F. Some checking account can be joint so 2 or more people can access it (like wife and husband).

G. If you do overpay on your account, you will have to pay penalties for overspending.

E is incorrect because there are some few checking accounts that earn interest (very few).

H is incorrect because some banks require fees and restrictions.

5 0
4 years ago
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