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LUCKY_DIMON [66]

3 years ago

15

When solving the equation -3a^2=7a-3 using the quadratic formula, what values should be used for a, b, c

1 answer:

Leni [432]3 years ago

6 0

You configure the formula first to equal it to 0. Also in the order of from high powered x to lower powered and constant.

-3a^2 - 7a + 3 = 0

In order now. A is first one B is second one and C is third one.

Answer is 4

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What is the value of the expression if z = 27? StartFraction 7 over 9 EndFraction z minus 18 + one-third z

Mandarinka [93]

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The value of the given expression when z=27 is 16

Therefore $\frac{7}{9}(z-18)+\frac{1}{3}z=16$ when z=27

Step-by-step explanation:

Given expression is $\frac{7}{9}(z-18)+\frac{1}{3}z$

To find the value of the expression when z=27 :

First simplify the given expression

$\frac{7}{9}(z-18)+\frac{1}{3}z$

$=\frac{7(z-18)}{9}+\frac{1}{3}z$

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$=\frac{7z-126+3z}{9}$

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Put z=27 in the above equation we get

$=\frac{10(27)-126}{9}$

$=\frac{270-126}{9}$

$=\frac{144}{9}$

$=\frac{144}{9}$

$=16$

$\frac{7}{9}(z-18)+\frac{1}{3}z=16$

Therefore the value of the given expression when z=27 is 16

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