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Licemer1 [7]
3 years ago
15

Solve each system of linear equations by elimination. 5x-y=7 4x+8y=-12​

Mathematics
1 answer:
blondinia [14]3 years ago
7 0

Answer:

Step-by-step explanation:

hello :

5x-y=7....(*)

4x+8y=-12​...(**)

multiply (*) by 8 : 40x-8y =56  ...(***)

add(**) and (***) : 44x = 44  so : x = 1

put this value in (*) : 5(1)-y = 7

y = 5-7 = -2

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Chin canned a number of quart jars anf a number of pints jars of tomatoes from hid garden. A pint is 16 onces and a quart is 32
ryzh [129]

Answer:

The equation which models the scenario is:   16 p + 32 q  = 1280

Step-by-step explanation:

The total number of pints packed  = p

The total number of quarts  packed  = q

The weight of 1 pint jar of tomatoes  = 16 oz

So, the total weight of p pints  = p x ( Weight of 1 pint) = p x ( 16 oz) = 16 p

The weight of 1 quart jar of tomatoes  = 32 oz

So, the total weight of q quarts  = q x ( Weight of 1 quart) = q x ( 32 oz)

= 32 q

Now, the TOTAL WEIGHT of p pints and q quarts

= Total weight of { p pints +  q quarts}  = 16 p + 32 q

Also, chin canned a total of 1280 ounces.

⇒ TOTAL WEIGHT of p pints and q quarts = 1280 ounces

or,   16 p + 32 q  = 1280 ounces

Hence, equation which models the scenario is:   16 p + 32 q  = 1280

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4 years ago
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romanna [79]

Answer:

i=10^5

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4 0
3 years ago
Round 939,515 to the nearest ten
Radda [10]

Answer:

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6 0
4 years ago
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emmainna [20.7K]

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7, x, 5, and x

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