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diamong [38]
3 years ago
11

the difference between two numbers is 10 and their sum is four times the smaller number. find the two numbers

Mathematics
1 answer:
Vanyuwa [196]3 years ago
8 0

Answer:

The smaller number is 5.

The bigger number is 15.

Step-by-step explanation:

Let the smaller number be x and the bigger number be x+10.

x+x+10 = 4x

2x+10 = 4x

10 = 4x-2x

2x = 10

x = 10÷2

  = 5

x+10 = 5+10

       = 15

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A) $644

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work:
1,299 - 655 = 644


6 0
3 years ago
Find the surface area of a cylinder with the height of 10 inches and a base diameter of 6 in ​
sweet-ann [11.9K]

Answer:

339.24

Step-by-step explanation:

To find the surface area, you will need to the the area of the base of the cylinder. To do that, use the formula A=pi (r)^2

The radius is half the diameter do r=3

3.14(3)^2 should give you about 28.27.

This is the area of the top and bottom of the cylinder.

Now, do 28.27x10=282.7 to find the height surface area.

282.7+28.27+28.27=Surface area.

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4 0
3 years ago
The data represent the results for a test for a certain disease. Assume one individual from the group is randomly selected. Find
SOVA2 [1]

Answer:

0.505 = 50.7% probability of a negative test.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

In this question:

142 + 6 = 148 people tested positive. Of those, 142 had the disease and 6 did not.

7 + 145 = 152 people tested negative. Of those, 7 had the disease and 145 did not.

Find the probability of getting someone who tests negative, given that he or she did not have the disease.

This is the probability of a negative test.

152 negative tests out of 148 + 152 = 300

152/300 = 0.507

0.505 = 50.7% probability of a negative test.

5 0
3 years ago
Find the measure of the central angle below:<br> 45°
Semenov [28]
The central angle below is 1
4 0
3 years ago
Can someone help me on this I can’t figure out which ones are right.
bearhunter [10]

Answer:

A

Step-by-step explanation:

the function for this graph is:

y =  {(x - 1)}^{2}

so the domain (the input AKA THE x values) is all the real numbers.

7 0
3 years ago
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