Evaluate -(2^-6)(2^3) apex A.-1 over 8 B. -8 C.1 over 8 D.8

-2(2x-6)=8-(-5+3x) how do you solve this ?

Serggg [28]

Answer:

x = -1

Step-by-step explanation:

first you "remove the parentheses" by multiplying the number on the outside of them to everything on the inside. for instance, -2 x 2x = -4x and -2 x -6 = 12 (because whenever you multiply two negatives, it turns into a positive) then, when there is a minus sign in front of parentheses, you change the sign of everything within the parenthesis leaving you with a positive 5 and a negative 3x. so now you have a much simpler equation of -4x + 12 = 8 +5 -3x

next you want to of course add the 5 and the 8 to make it even more simple which would leave you with the equation:

-4x + 12 = 13 - 3x

The next thing you need to do is get the unknown variable on one side of the equation. So you do add 4x do get the x on the right side which would leave you with 12 = 13 - 3x + 4x

So now you can do the same thing to the 13 to try to get it on the left by subtracting 13 from both sides

12 - 13 = -3x + 4x

now you make the equation simple by "combining the like terms" (which is something you'll hear a lot in algebra class)

making you equation -1 = 1x

or just -1 = x because when you multiply something by 1, it's the same.

6 0

4 years ago

QUESTION 1 Provide an appropriate response. Compute the standardized test statistic, X 2 , to test the claim σ 2 ≥ 12.6 if n = 1

Anna [14]

Answer: 11.667

Step-by-step explanation:

The formula to find the test statistic for chi-square test is given by :-

$\chi^2=\dfrac{(n-1)\cdot s^2}{\sigma^2}$

Given : Claim : $\sigma^2=12.6$

$n = 15\ ;\ s^2 = 10.5$

Then , the standardized test statistic will be :-

$\chi^2=\dfrac{(15-1)\cdot 10.5}{12.6}\\\\=\dfrac{14\cdot 10.5}{12.6}=11.6666666667\approx11.667$

Hence, the standardized test statistic $\chi^2=11.667$

8 0

3 years ago

Help me with this!! Will mark Brainliest!!!

Andrei [34K]

Answer:

The answer is no.

Step-by-step explanation: Please brainliest if correct!

3 0

3 years ago

Read 2 more answers

Can someone please help me with this problem?

GenaCL600 [577]

You need to know and have memorized metric unit conversions. They are easy, you just need to know how many zeros to add.

1 cm = 10 mm
1 m = 1000 mm
1 m = 100 cm
1 km = 1000 m

(1.) 4m + 3cm = 400cm + 3cm = 403cm
(2.) 3km + 8m = 3000m + 8m = 3008m
(3.) 7cm + 9mm = 70mm + 9mm = 79mm
(4.) 1m + 5cm = 100cm + 5cm = 105cm
(5.) 5km + 5m = 5000m + 5m = 5005m

Do you see that to switch 5km to smaller unit meters you just add the zeros on to the end. Because 1km = 1000m ; 5km = 5000m

You try the rest. let me know if you have any questions.

5 0

3 years ago

Select all explanation that prove triangle ABC is congruent to triangle A'B'C

Archy [21]

Answer:

AB = A'B'

BC = B'C'

AC = A'C'

angle ABC = angle A'B'C'

angle CAB = angle C'A'B'

angle CBA = angle C'A'B'

Step-by-step explanation:

use different axomes to show relation,

3 0

3 years ago