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Tju [1.3M]
3 years ago
12

Help??? Can someone help me with all of them???

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
6 0
The answer is -2,-3 :()
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Can i get help I'm struggling right now
andrezito [222]

Answer:

7a+2a=9a

Step-by-step explanation:

You distribute the a to each of the numbers in the parenthesis. Which means that you multiply. You should be left with a 7a+2a. Then since 7+2=9, your answer is 9a. So answer 1 is correct because they do these exact steps.

3 0
3 years ago
Read 2 more answers
5 (u + 1) -<br>7 = 3<br>3 (u - 1) + 2u​
frez [133]

Correct Question:

5 (u + 1) - 7  = 3 (u - 1) + 2u.

Solve for u

Answer:

See explanation below

Step-by-step explanation:

In this given question, we are required to find u.

Given the equation:

5 (u + 1) - 7 = 3 (u - 1) + 2u​

Required:

Solve for u

To find u, first simplify both sides individually.

Simply 5 (u + 1) - 7:

Expand the parenthesis:

5u + 5 - 7

Collect like terms:

5u - 2

<em>Simplify 3 (u - 1) + 2u​:</em>

Expand the parenthesis:

3u - 3 + 2u

Collect like terms:

3u + 2u - 3

5u - 3

Bring both simplified equations together:

5u - 2 = 5u - 3

5u - 5u - 2 = -3

-2 = -3

Since -2 ≠ -3, there is no solution.

Therefore, we can say the equation is invalid.

3 0
4 years ago
for a function, can the number of elements in the range be greater than the number of elements in the domain? explain.
PIT_PIT [208]
Neither, because for a function, each range has it own domain
8 0
3 years ago
Read 2 more answers
Look at this set of 5 numbers:
scZoUnD [109]
The current mean is 3 (15/3)

adding 9 would make the mean 4 (24/6)

therefore the mean would increase by 1
3 0
3 years ago
- Mariana debe tomar dos pastillas; una cada 6 horas y otra cada 9 horas. Si a cierta hora toma las dos pastillas juntas, ¿despu
Fofino [41]

Answer:

Mariana takes the two pills together after 18 hours.

Step-by-step explanation:

Mariana must take two pills; one every 6 hours and another every 9 hours.

She take two pills together. Let she takes the two pills together after t hours at the time when she take initially.

To find the time to take the two pills together, take the least common multiple of 6 and 9.

6 = 2 x 3

9 = 3 x 3

So, the least common multiple is 2 x 3 x 3 = 18

So, she takes the two pills together after 18 hours.

7 0
3 years ago
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