3 years ago

Please can someone help me out? am getting different answers thanks

Mathematics

1 answer:

Dafna11 [192]3 years ago

3 0

2(2)^2 + 3(2)(-4) - 4(-4)^2 I get -80 as my answer

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3/2y-3+5/3 when y=6 and z=3

marissa [1.9K]

Answer:

$5 \frac{1}{3}$

Step-by-step explanation:

Assuming We want to evaluate

$\frac{3}{2y - 3} + \frac{5}{3} z$

When y=6 and z=3.

We substitute to get:

$\frac{3}{2 \times 6 - 3} + \frac{5}{3} \times 3$

We multiply to get:

$\frac{3}{12 - 3} + \frac{15}{3}$

We simplify the denominator to get:

$\frac{3}{9} + \frac{15}{3}$

Reduce the first fraction:

$\frac{1}{3} + \frac{15}{3}$

Add the numerator and keep one denominator for they are like fractions

$\frac{16}{3}$

Write as a mixed number:

$5 \frac{1}{3}$

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