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pogonyaev
3 years ago
6

X =2y - 4 x + 5y = -66 what is the x - value of the solution to this system of equation

Mathematics
1 answer:
stich3 [128]3 years ago
3 0

Answer:x=-8 and y=-2

Step-by-step explanation:plug in for x.7(2y-4)+5y=6-6614y-28+5y=-6619y-28+-6619y=-38y=-2put it back in.

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Multiply 2 3/4 x 1 1/3. Write your answer in simplest form
bagirrra123 [75]

so , bro to multripy fractions , you have to convert the mixed fraction into unlike fractions . so lets get started.

2 3/4  *  1 1/3

= 12 / 4  * 4/3

now multiply normally

= 48 / 12

divide this by 4/4 to get simplest for

= 12 / 3 divided by 3/3

= 4/1

Step-by-step explanation:

6 0
3 years ago
10. Both x and y vary inversely with each other. When x is 10, y is 6,which of the following is not a possible pair of correspon
elena55 [62]

9514 1404 393

Answer:

  D) 45 and 1.2

Step-by-step explanation:

The "varies inversely" relationship is described by the equation ...

  y = k/x . . . . . . y varies inversely with x (and vice versa)

The value of k can be found from known values of x and y:

  xy = k . . . . . . multiply the above equation by x

  (10)(6) = k = 60 . . . . using the given values

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To check if a given pair of numbers satisfies ...

  y = 60/x

you can multiply them together to see if the product is 60.

  (A) 12×5 = 60

  (B) 15×4 = 60

  (C) 25×2.4 = 60

  (D) 45×1.2 = 54 . . . . . not a possible pair of corresponding values.

45 and 1.2 are not a possible solution for x and y.

8 0
3 years ago
A tuition bill for school states that Brenda owes $438. She wants to pay off her bill in 6 months. Write and solve an inequality
Marta_Voda [28]

Answer:

Step-by-step explanation:

3 0
4 years ago
In the equation y=x/8 what is the unit rate
Darina [25.2K]
The unit rate for 'y' is  1/8 per x .

The unit rate for 'x' is  8 per y .
8 0
4 years ago
Luanda wants to buy a box of cereal. Which box has the lowest cost per ounce? Group of answer choices 20-oz box for $3.20 10-oz
marin [14]

Answer: 15-oz for 2.25

3.20÷20= 0.16

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2.25÷15= 0.15

2.72÷16= 0.17

I hope this helps:

3 0
3 years ago
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