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3 years ago

A movie theater problem I need help with

Mathematics

1 answer:

Arada [10]3 years ago

4 0

You need to multiply the rows with how many seats is in each one.
18×15=270

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Find f(-2). f(x) = 9x2 - 5x + 2 A) 14 B) 18 C) 28 D) 48

kifflom [539]

F(x) = 9x² - 5x + 2

f(-2) = 9(-2)² - 5(-2) + 2
f(-2) = 36 + 10 + 2
f(-2) = 48

3 0

3 years ago

Heeelp and simplify ASAP PLEASE

Svetach [21]

Answer:

Step-by-step explanation:

7 0

2 years ago

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Contact [7]

Answer:

Step-by-step explanation:

sorry idk how to explain it

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3 years ago

(1 mark)

svet-max [94.6K]

Answer:

Inverse proportion

Step-by-step explanation:

Inverse proportion: in this type of relation, two quantities proportion such that one decreases and other increases or vice-versa.

So, in the given question when the number of workers increases, time is taken for certain work decreases.

So, Inverse proportion is the correct answer.

8 0

3 years ago

Find the zeros of polynomial function and solve polynomials equations. f(x)=24x^3-64x^2-21x+56

8090 [49]

Since this polynomial has 4 terms, factoring by grouping should be the first thing we try here.

So, we have:

$8x^2(3x-8)-7(3x-8)=0 \implies\\ (8x^2-7)(3x-8)=0$

So, we can use ZPP to find out roots:

$3x-8 =0 \implies\\ x=\frac{8}{3}\\ 8x^2-7=0 \implies \\ 8x^2=7 \implies \\ x^2=\frac{7}{8} \implies \\ x=\pm\frac{\sqrt{7}}{\sqrt{{8}}}\\ \text{Rationalizing denominator:}\\ x=\pm\frac{\sqrt{56}}{8}$

So our three roots are:

$x \in \{\frac{8}{3},\frac{\sqrt{56}}{8},-\frac{\sqrt{56}}{8}\}$

8 0

3 years ago