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Oliga [24]
3 years ago
15

What is the solution to the system of equations? Use the substitution method to solve. 6=−4x+y−5x−y=21 Enter your answer in the

boxes.
Mathematics
1 answer:
miss Akunina [59]3 years ago
5 0

Answer:

x=-3 and y= -6

Step-by-step explanation:

we have

6=-4x+y and -5x-y = 21

6+4x=y we substitute y in the second equation

-5x-(6+4x)=21

-9x-6=21

-9x=27

x=-3

we substiture x in the second

-5(-3)-y =21

15-y=21

15-21=y

y=-6

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a farmer sells his corn for $230 a metric ton with a small surcharge of $25. his neighbor sells her corn for $230 a metric ton a
anyanavicka [17]

Step-by-step explanation:

Step one:

The farmer sells his corn for $230 a metric ton

small surcharge = $25.

let the amount per metric ton be x

and let the total cost per x metric ton be y

the total cost function is

y=230x+25--------------1

The neighbor sells her corn for $230 a metric ton

he gives $15 rebate------<em>A rebate is a partial refund of the cost of an item</em>

let the amount per metric ton be x

and let the total cost per x metric ton be y

the total cost function is

y=230x-15----------------2

Step two:

Equating the two equation above

230x+25=230x-15

230x-230x=25+15

0=40

The result shows that based on the cost function of both farmer, there will never be an amount of corn that would make them have the same cost

4 0
3 years ago
(-(-17) what is the answer simplify the expression
WARRIOR [948]

Answer:

17

Step-by-step explanation:

Whenever you are multiplying 2 negative numbers together, the answer is always positive. In this case, you are multiplying -1 and -17 together, so your answer is going to be 17.

5 0
2 years ago
Select all ratios equivalent to 3:5. <br><br> A) 24:40<br> B) 33:55<br> C) 4:6
Ksju [112]

Answer:

A and B

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
2 1/4 -1 3/5 divided by 3
sveta [45]

Answer:

1.717

Step-by-step explanation:

3 0
2 years ago
What is the area of the figure? The figure is not drawn to scale.
PtichkaEL [24]

Area of a Parallelogram = base x height

base = 3.3

height = 8.4

Area = 3.3 x 8.4 = 27.72

Answer: 27.72 cm^2

Hope this helps!

4 0
2 years ago
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