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Vladimir79 [104]
3 years ago
15

-4x - 2y = -12 4x + 8y = -24 Solve the system by elimination.

Mathematics
2 answers:
Rasek [7]3 years ago
5 0
-4x-2y=-12
4x+8y=-24
6y=-36
y=-6
4x=-24-(8*(-6))
4x=-24+48
4x=24
x=6
Answer: (6;-6)
sesenic [268]3 years ago
4 0

6,-6

Explanation: plug 6 in for x and -6 for y to get your answer.

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(5•10^-2) x (2•10^3)
Andre45 [30]

Answer:

100

Step-by-step explanation:

5•10^-2= 5•1/100 an d that's equal to 1/20 if you divide it with (2•10^3)wich is equal too 2000

you will get 100 as a result

6 0
3 years ago
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A 14 foot is cut into two pieces so that one piece is 3 feet longer than twice the shorter piece
DochEvi [55]
To answer the question above, let x be the shorter one of the pieces. With the variable, we can express the longer piece as 2x + 3. Based on the given, the sum of the lengths of these pieces should sum up to 14 ft. 

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Substituting this value for the longer piece, we get 10 1/3 ft. Thus, the lengths of the pieces are 3 2/3 ft and 10 1/3 ft. 

3 0
3 years ago
What is the relationship between the base angles of an isosceles triangle?
Mashutka [201]
If the 2 base angles are congruent then the two opposite sides are congruent
4 0
3 years ago
If an item that originally cost $13 is increased to $19, what is the percentage of increase in the item?
Evgesh-ka [11]
Original cost (OC) = $13

New cost (NC) = $19

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4 0
3 years ago
Rachel ate 1 4/6 brownies, and brandy ate 6/7 of a brownie. how many brownies did they eat altogether?​
In-s [12.5K]

Answer:

53/21 OR 2 11/21

Step-by-step explanation:

1 4/6 + 6/7

Change 1 4/6 into an improper fraction

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Simplify 10/6 --> 5/3

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find a common denominator (21)

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6 0
3 years ago
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