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marusya05 [52]
3 years ago
9

Whats 5a - 2a + 9 ? could someone add how you got the answer to please?

Mathematics
2 answers:
Vinvika [58]3 years ago
7 0
Step 1. Simplify 
3a+9

3a+9 is your answer:

Done! :)

Mila [183]3 years ago
5 0
Combine like terms which are 5a and 2a which=3a then you have 3a=9 so then you divide 3 on both sides and then you get 3 which is your answer so a=3
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ivolga24 [154]

Answer:

part C. 3x + 2y <u>< </u>30, 5x + 7y <u><</u> 105

Step-by-step explanation:

Part 1:

spends 3 hours making each type X (3x)-each type x will take 3 hours so as the number of type x increases, the hours will increase by 3.

spends 2 hours making each type Y (2y)-each type y will take 2 hours so as the number of type y increases, the hours will increase by 2.

Part 2:

he can spend up to 30 hours each week making carvings. (<u><</u>30)-because he cannot spend more than 30 hours

Therefore, He has to spend 30 hours or less to make type X and type Y.

3x + 2y <u>< </u>30

Part 3:

His  materials cost him $5 for each type X carving. (5x)-each type x will take $5 so as the number of type x increases, the cost will increase by 5.

His materials cost him $7 for each type Y carving, (7y)-each type y will take $7 so as the number of type y increases, the cost will increase by 7.

Part 4:

he must keep his weekly cost for materials to $105 or less (<u><</u>105)-total cost cannot be more than $105.

Therefore, the total cost of making x and y should be $105 or less.

5x + 7y <u><</u> 105

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6 0
3 years ago
Help me please quickly.
Vikki [24]

Answer:

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Step-by-step explanation:

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I hope this is good enough for you:

7 0
3 years ago
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vivado [14]
-3a=-3-2b
a=1+2/3b

Solution
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7 0
3 years ago
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Answer:

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Roman55 [17]

Answer:

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Step-by-step explanation:

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