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3 years ago

Help me hurry pls !Solve the following 4-(x-2)=2x-12+3x show the work please I dont understand ! Help

1 answer:

4 0

Perform indicated multiplication on left side..

4-x+2=2x-12+3x combine like terms on both sides

-x+6=5x-12 subtract 5x from both sides

-6x+6=-12 subtract 6 from both sides

-6x=-18 divide both sides by -6

x=3

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Flauer [41]

Let h = the number of hours Marta works

Her savings in her account can be calculated by:

840 + 15h

This needs to be at least $2650 for her trip, so an inequality to solve:

840 + 15h ≥ 2650, where h is the number of hours worked

Now solve:

15h ≥ 1810

h ≥ 1810/15

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3 years ago

Find two positive even consecutive integers such that the square of the smaller integer is 10 more than the larger integer

mafiozo [28]

Answer:

the numbers are $4,6$

Step-by-step explanation:

Let

x-------> the smaller even consecutive integer

x+2-------> the larger even consecutive integer

we know that

$x^{2}=(x+2)+10$

solve for x

$x^{2}-x-12=0$

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}-x-12=0$

$a=1\\b=-1\\c=-12$

substitute in the formula

$x=\frac{1(+/-)\sqrt{-1^{2}-4(1)(-12)}} {2(1)}$

$x=\frac{1(+/-)\sqrt{49}} {2}$

$x=\frac{1(+/-)7} {2}$

$x=\frac{1(+)7} {2}=4$ ------> the solution (must be positive)

$x=\frac{1(-)7} {2}=-3$

therefore

the numbers are $4,6$

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3 years ago

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sveticcg [70]

Answer:

Step-by-step explanation:

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3 years ago

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laiz [17]

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3 years ago

John bought candy for $4.50 per pound.He spent a total of $36.00.How many pounds of candy did he buy?

ExtremeBDS [4]

Answer:

8 pounds. 36/4.5 is 8 so that's the answer

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3 years ago