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nignag [31]
3 years ago
13

Expresion 2 5+4X2+6-2X2-1 Insert parentheses in Expression 2 so that it has a value of 19. Then show why your expression has a v

alue of 19 5+4X2+6-2X2-1
Mathematics
1 answer:
solong [7]3 years ago
3 0
(5+4+6-2)×2×2-1
(9-4)×2×2-1
5×2×2--1
10×2-1
20-1
19
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Step-by-step explanation:

Using the first statement we can generate the function y=10x + 200  and using the second statement we can also generate the function y = 30x + 100 . Now using the two equations solve for x and y to determine how many months they cost the same.

y = 10x + 200

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Substitute the value of x in the first equation into the second equation.

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This means in five months Tina will save the same amount. Now to find out how much the amount is, plot the value of x into one of the equations and solve for  y.

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7 0
3 years ago
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inna [77]
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