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3 years ago

Which ineqality is true for all values x

1 answer:

6 0

X <u><</u> y

The inequality symbol can be flipped in any direction depending on what each value is.

Or
x=x

This can also be true because "x" can only have one value throughout the whole expression.

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5 cm

Butoxors [25]

Answer:

155

Step-by-step explanation:

calculate the areas of 2 rectangles

method A

one rectangle with lengths 8 and 10

the other 15 and 5

so 8x10 + 15x5 = 80 + 75 = 155

method B

one traingle with lenghts 5 and 7

the other 15 and 8

so 15x8 + 5x7 = 120 + 35 = 155

4 0

3 years ago

Read 2 more answers

How do I 'Factor the expression 12p+30.' ?

s2008m [1.1K]

Answer:

Grouping and then use the common factor. Therefor the answer is 6(2p+5)

Step-by-step explanation:

I hope this helps.

5 0

3 years ago

Read 2 more answers

Find and interpret a 95% confidence interval to estimate the average number of bolts per box for all boxes in the population. Ro

gayaneshka [121]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The 95% confidence interval is $49.85 < \mu < 54.15$

This means that there is 95% chance that the true population mean is within this interval

Step-by-step explanation:

From the question we are told that

The sample size is n = 30

The sample mean is $\= x = 52$

The population standard deviation is $\sigma = 6$

Given that the confidence level is 95% then the level of confidence is evaluate as

$\alpha = 100 - 95$

$\alpha = 5\%$

$\alpha = 0.05$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table , the values is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

substituting values

$E = 1.96 * \frac{ 6 }{\sqrt{30} }$

$E = 2.147$

The 95% confidence interval is mathematically represented as

$\= x - E < \mu < \= x + E$

substituting values

$52 - 2.147 < \mu < 52 + 2.147$

$49.85 < \mu < 54.15$

4 0

4 years ago

Help me quick what is 5x90

maria [59]

5 x 90 = 450

When you multiply numbers with zeros, you first multiply the numbers and then add the zero(es) at the end.

5 x 9 = 45
5 x 90 = 450

4 0

4 years ago

Read 2 more answers

A game show has a bonus round where a contestant gets to spin a balanced wheel that is divided into eighths. the contestants win

poizon [28]

How many turns do they get to take? if it is on round I guess it would get the high number of 8

5 0

3 years ago