All categories

3 years ago

1. Find the missing values in the equations.

Mathematics

2 answers:

anastassius [24]3 years ago

6 0

Answer:

a. ? = 12

b. ? = -4

c. ? = 4

d. ? = -3

e. ? = -3

Step-by-step explanation:

Zolol [24]3 years ago

6 0

A. -12
B. 4
C. 4
D. 3
E.-3

You might be interested in

it takes carina on average 20 minutes to assemble product x . how many of products x can carina be expected to assemble in 3 hou

oksano4ka [1.4K]

Carina can assemble 10 products within the give time

3 0

3 years ago

Katie walked ⅚ mile on Saturday. It took her 10 mins to walk ⅙ mile. She took 1 minute breaks in between each ⅙ mile. How long d

Gennadij [26K]

Answer:

it took her 54 mins to finish her walk.

Step-by-step explanation:

Given;

total distance walked by Katie, d = ⁵/₆

time taken to walk ¹/₆ mile = 10 mins

break time = 1 min

There are five ¹/₆ mile in the total distance which is ⁵/₆ miles.

Time for the first ¹/₆ mile = 10 mins +

break time = 1 min

Time for the second ¹/₆ mile = 10 mins +

break time = 1 min

Time for the third ¹/₆ mile = 10 mins +

break time = 1 min

Time for the fourth ¹/₆ mile = 10 mins +

break time = 1 min

Time for the fifth ¹/₆ mile = 10 mins

Total time = 5 (10 mins) + 4 (1 min)

= 50 mins + 4mins

= 54 mins

Therefore, it took her 54 mins to finish her walk.

3 0

3 years ago

Calculate the discriminant: 5x² + 2x − 2 = 0

Darya [45]

Answer:

Step-by-step explanation:

The equation is of the form a x ²+bx +c = 0 where

a = 5, b= -2, c= -2

The Discriminant is given by:

Δ= b²− 4 * a * c

= (−2²)− ( 4 * 5 * ( − 2 ) )

= 4 + 40

= 44

8 0

4 years ago

Read 2 more answers

What is 2/3 equal to?

Helga [31]

2/3 is equal to 4/6, all you have to do is multiply the numerator and the denominator. I did by 2.

3 0

3 years ago

Read 2 more answers

Researchers surveyed 1,000 randomly selected adults in the U.S. A statistically significant, strong positive correlation was fou

Setler79 [48]

Answer:

Null hypothesis: $\rho =0$

Alternative hypothesis: $\rho \neq 0$

The statistic to check the hypothesis is given by:

$t=\frac{r \sqrt{n-2}}{\sqrt{1-r^2}}$

And is distributed with n-2 degreed of freedom. df=n-2[/tex]

For this case we got a significant result that means that the real correlation coefficient is different from 0 . And for this case the best interpretation would be:

This result indicates that earning more money influences people to recycle more than people who earn less money

Step-by-step explanation:

The correlation coeffcient is given by this formula:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

For this case we know that this value of r is positive and represent a string correlation between income level and the number of containers of recycling

In order to test the hypothesis if the correlation coefficient it's significant we have the following hypothesis:

Null hypothesis: $\rho =0$

Alternative hypothesis: $\rho \neq 0$

The statistic to check the hypothesis is given by:

$t=\frac{r \sqrt{n-2}}{\sqrt{1-r^2}}$

And is distributed with n-2 degreed of freedom. df=n-2[/tex]

For this case we got a significant result that means that the real correlation coefficient is different from 0 . And for this case the best interpretation would be:

This result indicates that earning more money influences people to recycle more than people who earn less money

4 0

3 years ago