PLEASE HELP I AM SCARED TO GET THIS WRONG

What is the sum of the fractions? Use the number line and equivalent fractions to help find the answer.

gregori [183]

Answer:

-0.75

Step-by-step explanation:

-0.75

6 0

3 years ago

Read 2 more answers

Escreva de duas formas diferentes os números a seguir. Urgente

Neko [114]

Answer:

To solve this problem, we need to write each number in two different ways, we could use percetanges or fractions.

This number can be written in scientific notation like $4 \times 10^{7}$ , where the exponent depends on the amount of zeros the quantity has.

A second way to write this number would be as a product $2 \times 20,000,000.00$ .

Similarly, this number can be written in scientific notation $2 \times 10^{-2}$ , also, we can write it as a fraction $\frac{2}{100}$ .

This number in scientific notation would be $1.05 \times 10^{8}$ . As a product would be

$1050 \times 100000$ .

In scientific notation would be $7 \times 10^{-9}$ . As a fraction would be $\frac{7}{1000000000}$ .

In scientific notation would be $4.56983 \times 10^{5}$ . Also, we can write it as a sum

$450,000 + 6,983$

In scientific notation would be $6.73 \times 10^{-7}$ . As a fraction would be $\frac{673}{1000000000}$

7 0

3 years ago

What is the quotient?

Feliz [49]

Answer:

d

Step-by-step explanation:

the 4 is already in all of the answer choices dividing exponents is subtracting the smaller numbers. since 8-(-4)=12 it is 4 x 10 to the twelfth power.

7 0

4 years ago

Passes through (3,-6) and (-1,2) slope intercept form?

IRISSAK [1]

Answer:

2/1

Step-by-step explanation:

8/4 which is also 2/1

7 0

3 years ago

To decide whether two different types of steel have the same true average fracture toughness values, n specimens of each type ar

Semenov [28]

Questions :

a. Calculate the P-value for the appropriate two-sample z test, assuming that the data was based on n = 100. (Round your answer to four decimal places.)

b. Calculate the P-value for the appropriate two-sample z test, assuming that the data was based on n = 500. (Round your answer to four decimal places.)

c. Is the small P-value for n = 500 indicative of a difference that has practical significance

Answer :

0.1574

0.00157

Yes

Step-by-step explanation:

Hypothesis :

H0 : μ1 - μ2 = 0

H1 : μ1 - μ2 ≠ 0

Given :

x1 = 60.7 ; x2 = 60.5 ; s1 = 1 ; s2 = 2

Based on n = 100

Test statistic, Z :

Z = (x1 - x2)/[√(s1²/n1 + s2²/n2 )]

x1 - x2 = 60.7 - 60.5 = 0.2

0.2 / √(1²/100 + 1²/100 )]

0.2 / √0.02

Z = 1.414

The Pvalue from Zscore :

P(Z < 1.414) = 0.1574

B.)

For n = 500

Z = (x1 - x2)/[√(s1²/n1 + s2²/n2 )]

x1 - x2 = 60.7 - 60.5 = 0.2

0.2 / √(1²/500 + 1²/500 )]

0.2 / √0.004

Z = 3.162

The Pvalue from Zscore :

P(Z < 3.162) = 0.00157

Yes, the small Pvalue for n = 500 is indicative of a difference with practical significance ; as the Pvalue are compare with the α to make about a Decison about our hypothesis.

5 0

3 years ago