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Alecsey [184]
3 years ago
7

I don’t understand the concept of this problem

Mathematics
1 answer:
maxonik [38]3 years ago
5 0

Answer:

This uses the method of elimination/addition.

Step-by-step explanation:

1 (9x + 7y = 15)

-7 (5x + y = -9) <— let’s eliminate y for both equations

9x + 7y = 15

+ -35x - 7y = 63 <— add both of the equations

—————————————————

- 26x + 0y = 6

(Please let me know if the answer is correct or not)

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klasskru [66]
B. 5, 9

x = 5
y = 9

y - x = 4

(9) - (5) = 4

True

hope this helps
4 0
3 years ago
Darius wants to purchase his favorite salad dressing. The salad dressing comes in two different size bottles. The 16 ounce bottl
Leya [2.2K]

<u>Answer:</u>

The correct answer option is b. Darius will get the better deal buying one 16 ounce bottle.

<u>Step-by-step explanation:</u>

We know that a 16 ounce bottle of the salad dressing is for $3.36 while a 10 ounce bottle is priced at $2.30.

Darius has a coupon for 40 cents off if he buys two 10 ounce bottles. We are to determine what is the better buy.

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Therefore, Darius will get the better deal buying one 16 ounce bottle.

7 0
3 years ago
Read 2 more answers
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masya89 [10]

Answer:

d

Step-by-step explanation:

5 0
3 years ago
X^2 + __x + 49 pls i need help<br><br> and i need 4x^2-24x+__
nadezda [96]

Answer:

4x2−24x4x2-24x

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4x(x)+4x(−6)4x(x)+4x(-6)

Factor 4x4x out of 4x(x)+4x(−6)4x(x)+4x(-6).

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Step-by-step explanation:

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sdas [7]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
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