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VladimirAG [237]
3 years ago
7

Kevin is 39 years old and daniel is 3 years old.how many years will it take until kevin is only 4 times as old as daniel?

Mathematics
1 answer:
AnnyKZ [126]3 years ago
7 0
9 :)))))))))))))))))
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Mrs. Kemp began the school year with 20 students in her kindergarten class. She had 23 students at the end of the year. What was
Liula [17]
First, we’re going to use this formula:

2nd number - 1st number
————————————— x 100%
1st number


If we plug in the numbers to this equation:

23-20
———- x 100%
20

And subtract 23 to 20, the answer to this equation is:

3
—- x 100% = 15%
20

In this case, the percent of increase is 15%.
3 0
2 years ago
Solve the equation
Alborosie
C. There is no solution.

6(x+4)=5(x-5)+x
6x+24=5x-25+x
6x+24=6x-25
24=-25
The statement is false for any value of x
∴ There is no solution.

Hope my answer helped u :)
7 0
3 years ago
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Lines c and d are parallel lines cut by transversal p.
bearhunter [10]
First, let's start off, let us define what are corresponding angles. When a transversal, which is a line that passes through two parallel lines, then the angles in the same corners are congruent.

Using this definition, the angles ∠2 is congruent to ∠6.
4 0
3 years ago
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Six different​ second-year medical students at Bellevue Hospital measured the blood pressure of the same person. The systolic re
mixer [17]

Answer: range= 26, variance= 80 and standard deviation= 8.94

Step-by-step explanation:

Range = highest - lowest

Range = 146 - 120

Range= 26

Let m be mean

M=mean=sum/n

Mean=(120+134+146+127+138+133) / 6

M=798/6

M=133

The standard deviation sample formula:

S.D = sqrt( Summation of |x-m|^2 / n-1)

Let start finding:

|x-m|^2

For 1st: |120-133|^2=169

For 2nd: |134-133|^2=1

For 3rd: |146-133|^2=169

For 4th: |127-133|^2=36

For 5th: |138-133|^2=25

For 6th: |133-133|^2=0

Summation of |x-m|^2 = 400

The standard deviation formula is :

S.D = sqrt( Summation of |x-m|^2 / n-1)

S.D= sqrt(400 / 5)

S.D=sqrt(80)

S.D= 8.94

Variance = (Summation of |x-m|^2 / n-1)

Variance= 400/5

Variance= 80

3 0
3 years ago
Read 2 more answers
What is the surface area?<br> 10 ft<br> 8 ft<br> 10 ft<br> 12 ft<br> 10 ft
amid [387]

Answer:

12×8/2=48

10×10=100

2(48)+3(100)

96+300= 396ft²

5 0
2 years ago
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