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2 years ago

Can somebody please help (no websites)

Mathematics

1 answer:

const2013 [10]2 years ago

4 0

Answer:

x y

0 .75

3 3.75

9 9.75

Step-by-step explanation:

You add .75 to whatever number x equals, to get y.

Hope that this helps!

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Find the value of z A.110 B.141 C.80 D.100

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2 years ago

Read 2 more answers

In the equation below, for what value of c does x = 4? 1 / (2x + 4) = 3x-c

rodikova [14]

Answer:

Option D.

Jenn's answer is not correct. She got it substituting $c=4$ into the equation and solving for "x".

Step-by-step explanation:

Given the following equation:

$\frac{1}{2}(2x + 4) = 3x-c$

Since you need that $x=4$ , you hace to substitute that value into the equation:

$\frac{1}{2}(2(4) + 4) = 3(4)-c$

Now you need to solve for "c":

$\frac{1}{2}(8 + 4) = 12-c\\\\\frac{12}{2}= 12-c\\\\6=12-c\\\\c+6=12\\\\c=12-6\\\\c=6$

Therefore for a a value of $c=6$ , you get $x=4$

Then, the you can identify that the correct answer is the one given in the Option D.

Jenn made a mistake, because she substituted $c=4$ into the equation and then solve for "x":

$\frac{1}{2}(2x + 4) = 3x-(4)\\\\x+2=3x-4\\\\2+4=3x-x\\\\6=2x\\\\\frac{6}{2}=x\\\\x=3$

3 0

2 years ago

Help with this please

Alex Ar [27]

Answer:

Hey you were the one I helped before right?

Well I guess I can't stop u from giving doubts. Anyway, I'll give I the answer for this one as well.

Hope this helped (again lol), U can ask for help anytime.

Don't forget to give thanks.

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3 years ago