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3 years ago

Which fraction and decimal forms match the long division problem? A. B. C. D.

Mathematics

1 answer:

abruzzese [7]3 years ago

3 0

Answer:

C 4/15 and 0.266 repeating

Step-by-step explanation:

I used a calculator

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X-1.4=7.82 Show work

const2013 [10]

You want to isolate x. To accomplish this, add 1.4 to both sides of your eqn.:

x = 7.82 + 1.4 = 9.22 (answer)

8 0

3 years ago

Find the solutions to x2 = 20. :):):) i love you

monitta

Answer:

x = 10

Step-by-step explanation:

1st Divide both sides by 2: x2 ÷ 2 = 20 ÷ 2

2nd Simplify: x = 10

Hope I helped :)

7 0

3 years ago

Whats the root number for 64

ss7ja [257]

The answer is 8 plz make me brainlist

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3 years ago

Read 2 more answers

2. A line goes through the points (0, 10) and (-1, 1). 2a What is the slope of the line?

sashaice [31]

Answer:

Step-by-step explanation:

We can find the slope using the slope formula

m = ( y2-y1)/(x2-x1)

= ( 1 -10)/(-1 -0)

= -9/-1

= 9

6 0

3 years ago

Read 2 more answers

In Pennsylvania the average IQ score is 101.5. The variable is normally distributed, and the population standard deviation is 15

blsea [12.9K]

Answer:

We conclude that the Pennsylvania school district have an IQ higher than the average of 101.5

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 101.5

Sample mean, $\bar{x}$ = 106.4

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 15

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 101.5\\H_A: \mu > 101.5$

We use one-tailed z test to perform this hypothesis.

Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{106.4 - 101.5}{\frac{15}{\sqrt{30}} } = 1.789$

Now, $z_{critical} \text{ at 0.05 level of significance } = 1.96$

Since,

$z_{stat} > z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis.

Thus, we conclude that the Pennsylvania school district have an IQ higher than the average of 101.5

5 0

3 years ago