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Dimas [21]
3 years ago
8

Which ordered pair represents the solution to the system of equations? {−5x+7y=−196x−2y=10

Mathematics
1 answer:
Alenkinab [10]3 years ago
4 0

Answer:

Step-by-step explanation:

-5x + 7y = -19

6x - 2y = 10

-10x + 14y = -38

42x - 14y = 70

32x = 32

x = 1

-5 + 7y = -19

7y = -14

y = -2

(1, -2)

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6=a/4+2 solve for a
stepan [7]

Answer:

A= 36

Step-by-step explanation:

a/4+2= A/6

36/6=6

3 0
3 years ago
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A girl scout troop sold cookies. If the girls sold 5 more boxes the second week than they did the first, and if they doubled the
VARVARA [1.3K]
N = first integer 
n + 1 = second integer 
n + 2 = third 
n + 3 = fourth 

the sum is 114 so: 

n + (n + 1) + (n + 2) + (n + 3) = 114 

solve: 

4n + 6 = 114 
4n = 108 
n = 27 

so 27 is your first. 
27 + 1 is your second (remember n +1 n +2 and n +3) 

so your first four integers are: 27 28 29 and 30 


(I'll also help with one) 

week one: x 
week two: x + 5 
week three: 2(x+5) or 2x + 10 

week1 + 2 + 3 = 431 

so its: 

x + (x+5) + (2x + 10) 
4x + 15 = 431 
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x = 104 

its then: 

week one: 104 sold 
week two: 109 sold (x + 5) 
<span>week three: 218 (2x + 10)
</span>
7 0
3 years ago
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What is -15.5t + 13.24 = -13.44 + 10.56 – 3.1t
Tatiana [17]
First, subtract 13.24 from both sides of the equation and add -3.1t on both sides of the equation. This isolates the variable t:

-15.5t + 3.1t = -13.44 + 10.56 - 13.24

Now combine the numbers on both sides of the equation and solve for t:

-12.4t = -16. 12
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Hope this helps!
4 0
3 years ago
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Factor completely 2x^2 +6x -108
never [62]

Answer:

2(x-6)(x+9)

Step-by-step explanation:

5 0
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The graph shows how many centimeters above a table top, y, a painted spot on an automated hamster wheel is for a given number of
ale4655 [162]

Answer:

Hence, the answer is 86.42°.

Step-by-step explanation:

We are asked to find how many degrees is the painted spot turning in 0.75 s.

Let us consider that α denote the angle spot is turning in 0.75 sec.

As in 0.75 sec the height of table top is 12.

Hence we can use the trignometric identity to find the measure of angle α.

as \tan\alpha=\dfrac{P}{B}

where P denotes the perpendicular i.e. the height of table top.

and B denotes the base i.e. the number of seconds.

Here P=12 and B=0.75

Hence, \tan\alpha=\dfrac{12}{0.75}=16\\\\\alpha=\arctan 16=86.42 \degree


4 0
3 years ago
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