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3 years ago

Which equations are in standard form? Check all that apply

Mathematics

1 answer:

Zinaida [17]3 years ago

8 0

Answer:

if u need help go to math way .

Step-by-step explanation:

math way is a good way to get the steps and answer to ur problem.

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What is the value of A when we rewrite 3.14^159x as A^x?

slavikrds [6]

The rule we'll use is

p^(q*r) = (p^q)^r

The exponents have been rearranged a bit.

In this case, p = 3.14, q = 159 and r = x, so,

p^(q*r) = (p^q)^r

3.14^(159*x) = (3.14^159)^x

This is in the form A^x with A = 3.14^159

3 0

3 years ago

Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=10

Tanya [424]

Answer:

a) 0.7734

Step-by-step explanation:

Problems of normal distributions can be 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.

In this question, we have that:

$\mu = 101, \sigma = 24$

(a) what proportion of children aged 13 to 15 years old have scores on this test above 83 ?

This is 1 subtracted by the pvalue of Z when X = 83. So

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

$Z = \frac{83 - 101}{24}$

$Z = -0.75$

$Z = -0.75$ has a pvalue of 0.2266

1 - 0.2266 = 0.7734

The answer is 0.7734

5 0

3 years ago

Analyze the statement below and complete the instructions that follow. If a month is June, then it has 30 days. Write the contra

aleksley [76]

Note first that several months have 30 days (each): April, June and September.

(A) could not be correct, since the month in question could have 28, 29 or 31 days.

(B) See (A), above. If the month in question does not have 30 days, then the month could NOT be April, June or September. Reject (B).

(C) You do this one, similarly to my responses to (A) and (B), above.

(D) This one is true, since we know that June has 30 days. If the month in question does NOT have 30 days, then that month could not possibly be June.

6 0

4 years ago

Find (18 × 106) + (5 × 104). A) 1.8005 × 106 B) 1.8005 × 107 C) 1.805 × 106 D) 1.805 × 107

Andrews [41]

The answer is D. Because (18 x 10^6) + (5 x 10^4) = 18050000. And the answer to 1.805 x 10^7 also equals 18050000, if you do the math.

3 0

4 years ago

Read 2 more answers

When divided by 3 I am 700 when divided by 7 I 300 what number am I

Gala2k [10]

It is 2100

700*3=2100

7*300=2100

There you go.

8 0

3 years ago