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Gnom [1K]
3 years ago
9

What is the value of the expression below when z = 2? 4z2 – 3z – 4​

Mathematics
2 answers:
zhenek [66]3 years ago
8 0

Answer:

<h2>6</h2>

Step-by-step explanation:

4z^2 - 3z - 4​\\z =2

Substitute 2 for z in the given equation

4(2)^2 - 3(2) -4\\

Follow the PEMDAS order of operations

\mathrm{Calculate\:exponents}\:\left(2\right)^2\::\quad 4\\=4\cdot \:4-3\left(2\right)-4\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:4\times\:4\::\quad 16\\=16-3\left(2\right)-4\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:3\left(2\right)\::\quad 6\\=16-6-4\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:16-6-4\::\quad 6

baherus [9]3 years ago
3 0

Answer:

Step-by-step explanation:

Plug in z = 2 in the expression

4z² - 3z - 4 = 4*2² - 3*2 -4

                 = 4*4 - 6 - 4

                 = 16 - 6 - 4

                 = 10 - 4

                 = 6

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2 years ago
After how many seconds is the height 68 feet? When the equation is h=-16t2+64t+8
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3 years ago
Which of these problem types cannot be solved using the law of sines
timama [110]

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Explanation:

The law of sine states that,

\frac{\sin A}{a} =\frac{\sin B}{b}=\frac{\sin C}{c}

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3 years ago
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