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inessss [21]
2 years ago
14

Six times a number is equal to the number increased by 15 find the number

Mathematics
1 answer:
ololo11 [35]2 years ago
7 0

Answer:

3

Step-by-step explanation:

(six times a number) is (equal) to (the number increased by 15)

            6x                          =                            x + 15

6x = x + 15

Subtract x from both sides

5x = 15

Divide both sides by 5

x = 3

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The probability of none will have high blood pressure if twenty percent of Americans age 25 to 74 have blood pressure .If 16 ran
andriy [413]

Answer:

The probability that none will have high blood pressure is 0.0281

Step-by-step explanation:

The correct question is as follows;

Twenty percent of Americans ages 25 to 74 have high blood pressure. If 16 randomly selected Americans ages 25 to 74 are selected, find each probablility. a. None will have high blood pressure

This is a binomial problem. We shall solve in that line

The probability of success is 20% or 0.2 [(Americans ages 25 to 74 have high blood pressure)] p = 0.2

The probability of failure q is thus 1-p = 1-0.2 = 0.8

The probability of none is thus;

P(X= 0) = 16C0 p^0 q^16

= 16C0 * 0.2^0 * 0.8^16 = 0.0281

8 0
3 years ago
I will give brainliest for correct answer!
zavuch27 [327]

Answer:

you forgot the question

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
JA mattress store in Stafford purchased a mattress at a cost of $255 and marked it up 100%. Later on, Cassie bought the mattress
goldenfox [79]

Answer:

She pays $566.10

Step-by-step explanation:

The mattress store marks a mattress up 100%. 100% of $225 is 225. We add 225 to 225 and get 510. Therefore, the store sells the mattress for $510 without tax. When Cassie buys the mattress, we have to add 11% tax. We change 11% to 0.11 and multiply that by the selling price (510). We get 56.10, so that is the tax. We add the tax to the selling price and get $566.10. Cassie pays $566.10 for the mattress.

I hope this helped and please mark me as brainliest!

6 0
3 years ago
A line passes through the points
masha68 [24]

Answer:

y=-2x+7

enter the point into point slope form to find the slope and then use one of the points in point slope form  and rearrange it to have y by itself

4 0
3 years ago
Solve by elimination.
Ulleksa [173]
I got (X,Y) (11,10)
7 0
3 years ago
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