The solution to the system -2x+5y=-15 and 5x+2y=-6 is what

Answers

Answer 1
Answer:

Step-by-step explanation:

−2x+5y=−15 and 5x+2y=−6

Rewrite equations:

−2x+5y=−15;5x+2y=−6

Step: Solve−2x+5y=−15for x:

−2x+5y=−15

−2x+5y+−5y=−15+−5y(Add -5y to both sides)

−2x=−5y−15

−2x−2=−5y−15−2(Divide both sides by -2)

x=52y+152

Step: Substitute52y+152forxin5x+2y=−6:

5x+2y=−6

5(52y+152)+2y=−6

292y+752=−6(Simplify both sides of the equation)

292y+752+−752=−6+−752(Add (-75)/2 to both sides)

292y=−872

292y292=−872292(Divide both sides by 29/2)

y=−3

Step: Substitute−3foryinx=52y+152:

x=52y+152

x=52(−3)+152

x=0(Simplify both sides of the equation)

Answer:

x=0 and y=−3


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If sally has 90000000 apples and gives her freind sophie 1900 of them , and keeps 900 apples for her self hown many apples did she give to charity?1

Answers

Answer: 89,998,910

Step-by-step explanation: if she gives 1900 away and keeps 900 then I’m assuming she gives the rest away to charity and that would be 89,998,910 apples

Answer:

She gave 89997200 apples to charity

Step-by-step explanation:

90000000 - 1900 - 900 = 89997200

or

90000000 - (1900 + 900) = 89997200

To obtain the graph of y = x2 - 6, shift the graph of y = x2
units.

Answers

Answer: down 6 units

Step-by-step explanation:

Edge 20

Answer:

Down 6 Units

Step-by-step explanation:

I need help solving this equatioion.
(2xy)(3y)

Answers

Step-by-step explanation:

So first we will multiply

(2xy)(3y)

=

6x {y}^(2)

Which statement is represented by the equation 3x +0.6 = 7?A.The product of 3 and x added to 0.6 is equal to 7

B. The sum of x and 0.6 multiplied by 3 is equal to 7

C.The product of 3 times the sum of x and 0.6 is equal to 7

D.The sum of 3 and x multiplied by 0.6 is equal to 7

Answers

The correct answer is A! :)

Answer:the right answer is a

Step-by-step explanation:

ive done this question

hope it helps

Suppose you are an elementary school teacher. You want to order a rectangular bulletin board to mount on a classroom wall that has an area of 90 square feet. Suppose fire code requirements allow for no more than 30% of a classroom wall to be covered by a bulletin board. If the length of the board is three times as long as the width, what are the dimensions of the largest bulletin board that meets fire code?

Answers

Answer:

3 feet wide and 9 feet long.

Step-by-step explanation:

The classroom wall has an area of 90ft^2.

The fire code requirements allow a bulletin board with an area of at most 30% of 90ft^2. This means that the maximum area of the bulletin board is 27ft^2

Let L and W be the length and wide of the bulletin board.  

If the length of the board is three times as long as the width, then L=3W, and the area of the board is LW=3WW=3W^2

For the largest board we have, 3W^2=27 \Rightarrow W^2=(27)/(3)=9 \Rightarrow W=√(9)=3ft

So, the largest bulletin board that meets the fire code is 3 ft. wide and 9 ft. long.

how many more pizzas dose the Westland location need to sell the equal downtown and center city locations

Answers

Answer:

530 :)

Step-by-step explanation:

If you add up the dowton and center city locations and then subtract that from the amount of pizzas at the westland location, you get your answer

Final answer:

The Westland location needs to sell 25 more pizzas to equal the sales of the downtown and center city locations.

Explanation:

To determine how many more pizzas the Westland location needs to sell to equal the downtown and center city locations, you would need to know the number of pizzas sold at each location. Let's say the downtown location sold 100 pizzas and the center city location sold 75 pizzas. To equalize the sales, the Westland location would need to sell the difference between the two, which is 25 pizzas.

Learn more about Pizza sales here:

brainly.com/question/31919870

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