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Archy [21]
3 years ago
14

Will give brainlest What is the result of adding these two equations? − 2x+7y= −5 −2x−4y= 6

Mathematics
1 answer:
Inga [223]3 years ago
4 0

Answer:

All you have to do is combine the like terms. Once you do that you get: -4x+3y=-11

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2 × 5 + 7(3 + 13) Which of the following describes 7 in the expression above?
Eva8 [605]
7 in the expression above represents a factor because after adding 3 and 13, you would need to multiply 2 and 5. Then, you will multiply 7 and 16 which shows that 7 in the expression above represents a factor.
8 0
3 years ago
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Find the volume of the prism
Dennis_Churaev [7]
14* 6=84 , sorry for the delay enjoy your day!
7 0
4 years ago
The ordered pairs (3,2) and (-2,13) are points on a linear function. Which equation best describes this function?
Mars2501 [29]

Answer:

The equation which describe this function is 5x + 11y = 37

Step-by-step explanation:

<u>To find the slope</u>

slope = (y₂ - y₁)/(x₂ - x₁)

slope = (13 - 2)/(-2 - 3) = 11/-5

<u>To find the equation</u>

(x - 3)/(y - 2) = -11/5

5(x - 3) = -11(y - 2)

5x -15  = -11y + 22

5x + 11y = 22 + 15

5x + 11y = 37

Therefore the equation which describe this function is

5x + 11y = 37

7 0
3 years ago
Read 2 more answers
The area of a circle = 64π. Find circumference.
Andrew [12]

Answer:

Area = 16π

Step-by-step explanation:

Area of a circle = πr^2

= 64π

= sqrt64

r = 8 because 8 × 8 is 64

Radius = 8

Now, use the circumference equation:

= 2πr

= 2π(8)

= 16π

4 0
3 years ago
A lake near the Arctic Circle is covered by a 222-meter-thick sheet of ice during the cold winter months. When spring arrives, t
Ivanshal [37]

S(t) = 3.82 - 0.2t


Step-by-step explanation:


After 7 weeks, the ice is 2.42 meters thick. The ice loses 0.2 meters of thickness per week; this means on the 7th week, it has lost 7(0.2) = 1.4 meters of thickness.


This means the ice started at 2.42+1.4 = 3.82 meters thick.


Our function will start at the original thickness of the ice, 3.82 meters.


Since the ice is losing thickness, we will subtract; it loses at a rate of 0.2 meters per week (t), which gives us 0.2t. This is subtracted from the original, 3.82 meters, giving us


S(t) = 3.82 - 0.2t



7 0
3 years ago
Read 2 more answers
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