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N76 [4]
3 years ago
6

Can someone help me on this one?

Mathematics
2 answers:
umka21 [38]3 years ago
8 0

Answer:

A. 3/x = 20/100

x=15

B. 3/23 = x/100

300=23x

x=13

C. 3/20 = x/100

x=15

D.  17/x=20/100

x=85

Let me know if you have any other questions

jarptica [38.1K]3 years ago
5 0

Answer:

A=15

B=13??

C=15

D=85

Step-by-step explanation:

B is the only one I'm not sure

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The area of a triangle is comtinous or discrete
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Answer:

Continuous

Step-by-step explanation:

The area of a triangle is continuous. It can be any measure of fraction or decimal depending on the side lengths. It has no restrictions to be only whole  numbers or a specific set of numbers.

3 0
3 years ago
You are building a flower bed with a perimeter of 16 feet. The length of the bed is 4 feet longer than the width. What are the d
kykrilka [37]

Answer:

Step-by-step explanation:

The perimeter is basically the outline of the shape. The perimeter of a rectangle is given by P=2l+2w, where l is the length and w is the width. Thus, the perimeter of the flower bed would be given by P=2(3n5o)+2(5n5o).

6 0
2 years ago
#9 and #10<br> Please show work
Tatiana [17]

Answer:

Part 9) The number of items on Emily's grocery list is 5 and the number of items on Bobby's grocery list is 13

Part 10) The height of the taller bookshelf is 4 feet and the height of the shorter bookshelf is 1 foot

Step-by-step explanation:

Part 9)

Let

x ----> number of items on Emily's grocery list

x ----> number of items on Bobby's grocery list

we know that

y=2x+3 ----> equation A

x=y-8 ----> equation B

Solve by substitution

Substitute equation A in equation B

x=(2x+3)-8

solve for x

x=2x-5

2x-x=5

x=5

Find the value of y

y=2(5)+3=13

therefore

The number of items on Emily's grocery list is 5 and the number of items on Bobby's grocery list is 13

Part 10)

Let

x ----> the height of the taller bookshelf in feet

y ----> the height of the shorter bookshelf in feet

we have

x=5y-1 ----> equation A

Remember that

1\ ft=12\ in

To convert inches to feet divide by 12

so

60\ in=60/12=5\ ft

x+y=5 ----> equation B

Solve the system by substitution

substitute equation A in equation B

(5y-1)+y=5

solve for y

5y+y=5+1

6y=6

y=1\ ft

Find the value of x

x=5(1)-1=4\ ft

therefore

The height of the taller bookshelf is 4 feet and the height of the shorter bookshelf is 1 foot

3 0
3 years ago
Even though the population standard deviation is unknown, an investigator uses z rather than the more appropriate t to test a hy
alexandr1967 [171]

Answer:

The true true level of significance of this test is more than 0.01.

Step-by-step explanation:

No standard deviation and we are told that the investigator still used z rather than the more appropriate t - distribution.

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Thus, it means the critical value is getting closer to the mean value than the way it should be.

Therefore, means that for a given significance of 0.01 and using the z-distribution under this no standard deviation situation, the true true level of significance of this test is more than 0.01.

8 0
3 years ago
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Answer:

the first two and last one

Step-by-step explanation:

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2 years ago
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