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uranmaximum [27]
2 years ago
14

5a - 9 + a = 9

Mathematics
1 answer:
Ne4ueva [31]2 years ago
7 0

Answer:

a = 3

Step-by-step explanation:

1) Simplify 5a - 9 + a to 6a - 9.

6a - 9 = 9

2) Add 9 to both sides.

6a = 9 + 9

3) Simplify 9 + 9 to 18.

6a = 18

4) Divide both sides by 6.

a =  \frac{18}{6}

5) Simplify 18/6 to 3.

a = 3

Therefor, the answer is, a = 3.

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A number has only 1 factor pair. One of its factors is twice the other factor. What is the number? Explain.
Mrrafil [7]
<h3>Answer:  2</h3>

========================================================

Explanation:

If a number only has one factor pair, then that number must be prime. This is because prime numbers only have factors of 1 and the number itself.

For instance, the value 7 is prime because the only factors of this are 1 and 7.

For something like the number 32, it is composite and not prime because it has the factors {1,2,4,8,16,32} and it leads to these three factor pairs: 1*32, 2*16, 4*8. This is one example showing why the answer isn't composite.

-----------

Let's say that p is the unknown prime we want to find. The factors of this are 1 and p. We're told that "one of the factors is twice the other factor", so that must mean p = 2*1 = 2. We can see that 2 is twice that of 1.

8 0
3 years ago
charlie needs to make a total of 60 deliveries this week. so far he has completed 18 of them. what percentage of his total deliv
VladimirAG [237]
18 / 60 = 0.3
Charlie has completed 30% of his deliveries
5 0
3 years ago
Please help me! Whoever gets the correct answer and explains it will get marked Brainliest!!
Helen [10]

1. The answer is 0.425

2. the answer is 0.425

3. the answer is 0.2125

8 0
3 years ago
Assign two variables for each problem, and write the equations. Do not solve.
GalinKa [24]
Call the amount of pineapple "P', and the amount of gingerale "G".

We know that a mix of pineapple and gingerale makes 200 cups. So: 
P+G=200

We also know that double the pineapple (i.e. 2P) and triple the gingerale (i.e. 3G) makes 420 cups. So:
2P+3G=420

We can now solve by substitution:
2P+3(200-P)=420
2P+600-3P=420
-P=-180
P=180

180+G=200
G=20

For 420 cups we need 2P=360 cups of pineapple and 3G=60 cups of gingerale]

3 0
3 years ago
What is the similarity ratio (scale factor) of the larger triangle to the smaller triangle?
UkoKoshka [18]

Answer:

  • 5/11

Step-by-step explanation:

<u>Corresponding side have same ratio:</u>

  • 55/121 = 5/11 (divide by 11)
  • 40/88 = 5/11 (divide by 8)
  • 30/66 = 5/11  (divide by 6)

The similarity ratio or the scale factor of the larger triangle to the smaller is 5/11

5 0
2 years ago
Read 2 more answers
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