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KATRIN_1 [288]
3 years ago
14

Solve the following if 7+2x all divided by three equals 5 what is x?

Mathematics
2 answers:
NemiM [27]3 years ago
8 0

Answer:

x = 4

Step-by-step explanation:

Given

\frac{7+2x}{3} = 5 ( multiply both sides by 3 to clear the fraction )

7 + 2x = 15 ( subtract 7 from both sides )

2x = 8 ( divide both sides by 2 )

x = 4

Vlad [161]3 years ago
6 0

Answer:

x =4

Step-by-step explanation:

sorry the working was a bit scrappy in the pic

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The distribution of heights of young women aged 18 to 24 is approximately normal with a mean of 64.5 inches and a standard devia
Lena [83]
The 68 - 95 - 99.7 rule, gives the basis to solve this question.

It says that for a normal distribution 95% of the results are between the mean minus 2 standard deviations and the mean plus 2 standard deviations.

Here:
mean = 64.5 inches,
standard deviaton = 2.5 inches

mean - 2 standard deviations = 64.5 inches - 5 inches = 59.5 inches

mean +  2 standard deviations = 64.5 inches + 5 inches = 69.5 inches

Then, the answer is that 95% of women range approximately between 59.5 inches and 69.5 inches.

6 0
4 years ago
Taber invested money in an account where interest is compounded every year. He made no withdrawals or deposits. The function A(t
ioda

Taber invested money in an account where interest is compounded every year. He made no withdrawals or deposits.

The function A(t) = 525(1 + 0.05)t represents the amount of money in the account after t years.

The function is explained as below

Amount = Principal * ( 1 + interest rate ) ^ time

Principal is the amount that is invested in the beginning

Therefore, Taber originally invested $525

3 0
3 years ago
The solution to 4p+2<2(p+5) is
gizmo_the_mogwai [7]

Answer:

p<4

Step-by-step explanation:

4p+2< 2(p+5)

Distribute: 4p+2<2p+10

Subtract 2 from both sides: 4p<2p+8

Subtract 2p from both sides: 2p<8

Divide and we get: p<4

7 0
3 years ago
I need 7,714 solar panels to power my new workshop.If each box contains 24 panels,about how many boxes should I purchase?Choose
notsponge [240]

Answer:

322 boxes

Step-by-step explanation:

7714 solar panels

24 panels per box

7714/24= 321.4

i dont think you want a giant patch thats missing solar panels, so round that up to 322

:)

4 0
4 years ago
What would you do to solve the system?
kipiarov [429]
Answer:

Explanation:

12x = 48 - 8y
10x + 8y = 38
———————
12x + 8y = 48
10x + 8y = 38
———————
12x + 8y = 48
-1(10x + 8y = 38)
————————
12x + 8y = 48
-10x - 8y = -38
————————
2x = 10
x = 10/2 = 5

If x = 5 then:
10x + 8y = 38
10(5) + 8y = 38
50 + 8y = 38
8y = 38 - 50
8y = -12
y = -12/8
y = -3/2

Therefore, x = 5 and y = -3/2

6 0
3 years ago
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