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3 years ago

One number is eight more than twice another. If their difference is 25, what is the larger

Mathematics

1 answer:

scZoUnD [109]3 years ago

8 0

Answer:

Step-by-step explanation:

Let the smaller number = x

Let the larger number = y

y = 2x + 8

y - x = 25 Add x to both sides

y = x + 25 Substitute this into the first equation

x + 25 = 2x + 8 Subtract 8 from both sides

x + 25 - 8 = 2x Combine

x + 17 = 2x Subtract x from both sides.

17 = 2x - x Combine

17 = x

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N + 6 < -1 what is the solution to the inequality

Mashcka [7]

Answer:

N<-7 or (-∞,-7) hope this helps

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3 years ago

Look at the two inequalities. Select all the values from the set (4 ½, 7, 10, 15.5, 20) that make both inequalities true.

dem82 [27]

Answer:15

Step-by-step explanation:

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3 years ago

Read 2 more answers

Select the correct answer from each drop-down menu. A system of equations and its solution are given system A x-y=7 -3x+9y=-39 s

galina1969 [7]

Answer:

Step-by-step explanation:

x-y=7

-3x+9y=-39

Divide the second equation by 3

-x +3y = -13

Add this to the first equation

x-y=7

-x +3y = -13

----------------------

0x +2y = -6

Divide by 2

2y/2 = -6/2

y = -3

Now find x

x-y = 7

x -(-3) = 7

x+3 = 7

Subtract 3 from each side

x = 4

(4,-3)

Or by substitution

x-y=7

solve for x

x = 7+y

-3x+9y=-39

Substitute y+7 in for x

-3(7+y) +9y = -39

Distribute

-21 -3y +9y = -39

Combine like terms

-21 +6y = -39

Add 21 to each side

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4 0

3 years ago

I want the solution, please<br>

Savatey [412]

Answer:

7 and 7

Step-by-step explanation:

1*13=13

2*12=24

3*11=33

4*10=40

5*9=45

6*8=48

7*7=49: This is the peak

3 0

3 years ago

For a science experiment Ella recorded the time, in seconds, to boil 650 grams of solution. Her results were 24.5, 23.2, 29.8, a

bagirrra123 [75]

Answer:

Mean of boiling times = 26.9 seconds

Step-by-step explanation:

Times ella recorded are given as;

24.5 seconds, 23.2 seconds, 29.8 seconds, and 30.1 seconds.

Now, we want to find the mean of these boiling times.

Formula for mean is;

Mean = sum of terms/number of terms

In this question,

number of terms = 4

Sum of terms = 24.5 + 23.2 + 29.8 + 30.1 = 107.6

Thus,

Mean = 107.6/4

Mean = 26.9 seconds

8 0

3 years ago