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PtichkaEL [24]
3 years ago
15

Please help me on number (15) Will mark brainliest

Mathematics
1 answer:
vesna_86 [32]3 years ago
3 0

Answer:

that will be 12

Step-by-step explanation:

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Hello!
Tcecarenko [31]

This is simple algebra :)

First, we can write the question as an algebraic equation.

Given that Doug spent 40 more hours than Laura, we can represent Laura as (x) and Doug as (x+40).

"Doug and Laura spent a combined 250 hours." So we can write this as

(x) + (x+40) = 250

Now simplify:

2x + 40 = 250

Solve x by subtracting 40 from both sides of the equation:

2x = 210

Therefore:

x = 210/2

= 105

So Laura (x) spent 105 hours!

4 0
2 years ago
Read 2 more answers
Determine the number of units of solution 2 required to obtain the desire percent alcohol concentration of the final solution. T
KiRa [710]

Answer:

0.66 gal.

Step-by-step explanation:

The following should apply:

C1 * V1 = C2 * V2

we have that C1 is 0.1, that C2 is 0.3 and that V1 is equal to 2 gal

replacing the values we have that:

0.1 * 2 = 0.3 * V2

reorganizing the equation we have:

V2 = 0.1 * 2 / 0.3 solving this remains 0.66.

It means that the amount of solution 2 is 0.66 gal.

8 0
3 years ago
I need help with the question
Katena32 [7]

Answer:

6, 8, 4

Step-by-step explanation:

the answers are as follows

a. 6

b. 8

c. 4

3 0
2 years ago
Giving brainless I need the answer ASAP
GarryVolchara [31]

Answer:

Is this in Pearson Easybridge?

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
URGENT!!!! PLEASE HELP NOW!!! WHO EVER GIVES THE CORRRECT ANSWER WILL GET BRAINLIEST!!!
sladkih [1.3K]

Answer:

The correct ans is..... ( which i believe )

3rd option

Hope this helps...

Pls mark my ans as brainliest

If u mark my ans as brainliest u will get 3 extra points

3 0
3 years ago
Read 2 more answers
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