3 years ago

Solve by square roots x2 = 9

Mathematics

1 answer:

mixer [17]3 years ago

8 0

Answer:

Step-by-step explanation:

x=3,-3

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Im so lost im in algebra 1 and i feel so slow

Andrei [34K]

Answer:

Hey but you get better at in no time lol

Step-by-step explanation:

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2 years ago

A marketing consultant observed 40 consecutive shoppers to estimate the average money spent by shoppers in a supermarket store.

KonstantinChe [14]

Answer:

0.998 is the probability that the average money spent by a sample of 40 shoppers is within $10 of the actual population mean.

Step-by-step explanation:

We are given the following information in the question:

Standard Deviation, σ = $21.51

We are given that the distribution of average money spend is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

We have to find:

P( average money spent is within $10 of the actual population mean.)

$= P( z \leq \displaystyle\frac{10\times \sqrt{40}}{21.51}}) = P(z \leq 2.94)$

Calculation the value from standard normal z table, we have,

$P(z \leq 2.94) = 0.998$

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3 years ago

How many 9-inch-square floor tiles are needed to cover a rectangular floor that measures 12 feet by 15 feet?

Eduardwww [97]

To cover the width we need 12÷¾=12×4/3=16 tiles.
To cover the length we need 15×4/3=20 tiles, so to cover the floor area we need 16×20=320 tiles.

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3 years ago

Factoring out the GCF of the polynomial 2x^6+2x^5 will give

telo118 [61]

2x^5(x+1)

hope this helps

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3 years ago

2 lines intersect. A line with points R, S, U intersects a line with points V, S, T at point S.

Dima020 [189]

Step-by-step explanation:

here is your answer

enjoy

thanks to another users to give this answer

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2 years ago