Im trying to do IXL and I dont understand the way my teacher teaches (ironic right?)

IXL!! I WILL ADD BRAINLIST!

klio [65]

Answer:

-3,3.1, 3 2/10

Step-by-step explanation:

When you are putting different numbers from least to greatest, you need to put them in the same form...

First things first we should put -3 wayy up front. negative numbers are worth less than positive numbers.

Then we need to turn 3 2/10 into a decimal.

3 2/10 -------> 3.2

3.2 is more than 3.1

Thus, the order is

-3,3.1, 3 2/10

Hope this helps and have a nice day.

8 0

2 years ago

Read 2 more answers

Currently you have $80 and your sister has $145. You decide to save $6 of you allowance each week, while your sister decides to

Bas_tet [7]

You can solve the problem this way:

Your money is increading $6 a week while sister's is decreasing $7 a week (because she isn't saving any and is spending $7 of what she has weekly)

Your money each additional week vs sister''s:

80/145 (Week 0)

86/138 (Week 1)

92/131 (Week 2)

98/124 (Week 3)

104/117 (Week 4)

110/110 (Week 5) The amounts are the same in 5 weeks.

7 0

3 years ago

What is the measure of

julsineya [31]

Answer:

the awnser to L is 25° or c

4 0

3 years ago

Suppose a large consignment of cell phones contained 19% defectives. If a sample of size 399 is selected, what is the probabilit

deff fn [24]

Answer:

0.88% probability that the sample proportion will differ from the population proportion by more than 5%

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

For proportions p in a sample of size n, we have that $\mu = p, \sigma = \sqrt{\frac{p(1-p)}{n}}$

In this problem:

$\mu = 0.19, \sigma = \sqrt{\frac{0.19*0.81}{399}} = 0.0191$

What is the probability that the sample proportion will differ from the population proportion by more than 5%?

Less than 0.19 - 0.05 = 0.14 or greater than 0.19 + 0.04 = 0.24. Since the normal distribution is symmetric these probabilities are equal, which means that we can find one of them and multiply by 2. So

Probability of being less than 0.14.

pvalue of Z when X = 0.14. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{0.14 - 0.19}{0.0191}$

$Z = -2.62$

$Z = -2.62$ has a pvalue of 0.0044

2*0.0044 = 0.0088

0.88% probability that the sample proportion will differ from the population proportion by more than 5%

3 0

2 years ago

Help me please <br> solve: -11x^2-44=0

Cerrena [4.2K]

Answer:

1.1 Factoring: x2-44

Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : 44 is not a square !!

Step-by-step explanation:

7 0

2 years ago