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4 years ago

What is 6x^2 + 4x + 8 when x=7

Mathematics

1 answer:

Sonja [21]4 years ago

6 0

Answer: 330

Step-by-step explanation: First plugg in 7 for the x. The equation would look like 6(7^2) + 4(7) + 8. Then you would simplify the 7's. 6(49) + 28 + 8. Put like terms together by combining 28 and 8. 294 + 36. That would equal 330.

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3 years ago

Solve the inequality for x.<br> 7x-26<-5(2-3x)

Masja [62]

Answer:

$x > 2$

Step-by-step explanation:

7x-26<-5(2-3x)

first write out the equation

7x-26<-10 +15x

then solve the -5(2-3x)

by multiplying -5 by 2 and -5 by 3x which will give the answer -10 and 15x

7x-15x<-10+26

Now put the numbers with X first and since we moved the (+15x) into the otherside we change its sign to (-15x)

and because we put the (-26) into the otherside we do the same thing and change it into (+26)

-8x<16

Now we combine the same numbers so 7x-15x and -10+26

Next we divide both sides by (-8)

so (-8x÷-8) and (16÷-8)

and because we divided with a negative number (-8)

and we have an inequality( < ) we flip the sign from smaller than to greater than.

and so the final answer is x>2

or x is greater than 2

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Answer:

Step-by-step explanation:

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