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2 years ago

-3x + 5 = -4x - 10 solution??? ill give brainlist

Mathematics

2 answers:

Aloiza [94]2 years ago

4 0

Answer:

x=-15

Step-by-step explanation:

-3x+5=-4x-10

x+5=-10 Add 4x on both sides

x=-15 subtract 5 on both sides

Hope this helps plz mark brainliest if correct :D

mrs_skeptik [129]2 years ago

3 0

Answer:

x=-10

Step-by-step explanation:

hope this helps, sorry if i get wrong

DO NOT PICK ANSWER IT IS WRONG.

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Consider lines An and CD

vichka [17]

Answer:

slope of AB = 2

slope CD = 2

Step-by-step explanation:

the equation of a line is y = ax+ b where a is the slope, b is the y-intercept

let us take yB - yA

→ yB - yA = axB <u>+ b</u> - axA <u>- b</u>

→ yB - yA = a(xB - xA)

→ a = (yB - yA) / (xB = xA) = (6 - 2) / (-5 - (-7)) = 2

same goes for line CD

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2 years ago

Which function in Excel is used to perform a test of independence? a. T.TEST b. CHISQ.TEST c. NORM.S.DIST d. Z.TEST

denis23 [38]

Answer:

b. CHISQ.TEST

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

The statistic is given by:

$\chi^2 = \sum_{i=1}^n \frac{(O_i-E_i)^2}{E_i}$

In order to calculate the p value we need to have in count the degrees of freedom , on this case $df=(rows-1)(#cols-1)$ . And we can calculate the p value would be given by:

$p_v =P(\chi^2 >\chi^2_{calc})$

But the correct comand is given by:

b. CHISQ.TEST(Actual range, Expected range)

We just need to put in one column the Observed values and in other the expectec values.

3 0

2 years ago

Which contract costs more per month? An 18 month cable contract for $2070 or a 12 month contract at $1776? Which is the better d

Dafna1 [17]

Answer:

Contract A is cheaper because $115 per month is less than $148 per month

Step-by-step explanation:

To find the unit price we divide the total cost given by the total months given for each contract to find out the cost per month.

$2070/18 months = $115 per month

$1776/12 months = $148 per month

Contract A is cheaper because $115 per month is less than $148 per month

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2 years ago

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SCORPION-xisa [38]

It only equals positive 12, that symbol means it equals positive and negative 12

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2 years ago

The formula to find the surface area of a cube is 6s to the power of 2, where s stands for the side length of the cube. What is

gladu [14]

The surface area of the cube is 600cm^2.

6(10^2)
6(100)
600

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2 years ago