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nirvana33 [79]
3 years ago
8

I need help on number 1

Mathematics
1 answer:
prisoha [69]3 years ago
7 0
I hop this is right number 3
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What is the solution to the equation: 5 = 2/5a<br><br> A: 2<br> B: 4 2/3<br> C: 12 1/2<br> D: 25
rodikova [14]

Answer:C

Step-by-step explanation:

5= 2/5a

Multiply by 5/2 on each side

5/2 x5=2/5ax5/2

25/2=10/10a

25 divided by 2 is 12 1/2

3 0
3 years ago
Paul creates the diagram to help him factor 4x2 + x – 5 by using double grouping. His diagram is incomplete. A 2-column table wi
Troyanec [42]

Answer:

  5x  and  -4x

Step-by-step explanation:

Paul wants M₁ and M₂ to have a total that is +x, and a product that is -20x². The values of M₁ and M₂ that will do that are ...

  5x  and  -4x

8 0
4 years ago
Determine if 9x2 - 42x + 49 can be the area of a square. If so, what would the value of x have to be if the area of the square i
Shalnov [3]
Yes it can be. (3x-7) by (3x-7) would be one solution for the square, but (7-3x) by (7-3x) would work too. 

X would have to be either -(1/3) (which couldnt happen because you cant have negative lengths) so it has to be 5
8 0
4 years ago
It takes Robert 5 minutes to complete 3 math problems. Use the equation y= x/3 times 5 to find how long it will take Robert to c
Alona [7]

Answer:

20 minutes

Step-by-step explanation:

y=(12/3)*5=20

6 0
3 years ago
You buy 5 pounds of nails at the store. How many ounces is that?
miv72 [106K]

Answer:

80 ounces

Step-by-step explanation:

One pound equals 16 ounces

16 times five is 80 ounces

8 0
3 years ago
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