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dedylja [7]
3 years ago
9

Charlotte wants to solve the equation 6(2x+1) – 3 = 4x – 5. Which step would be an appropriate first step for Charlotte to take

to solve for x?
A. Subtract 1 from both sides to combine like terms
B. Add 4x to both sides to isolate the variable
C. Distribute the 6 to eliminate the parentheses
D. Combine 4x and -5 to simplify the problem
Mathematics
1 answer:
antoniya [11.8K]3 years ago
6 0

Answer:

C.

Step-by-step explanation:

c is the only one that even makes sense

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CAN YOU HELP ME PLEASE
dexar [7]

Answer:

1) angle NMP=103 and angle LMP=77

2) angle QST=58 and angle RSQ=32

Step-by-step explanation:

1)  can find the angle NMP:

180-(-20x+13)=(-16x+23)

180+20x-13=-16x+13

180-13-23=-16x-20x

144=-36x

x=-4

angle NMP: 180-(-16*(-4)+13) = 103

angle LMP: 180-103 = 77

============================================================

2) can find the angle QST:

90-(15x-43)=(8x+18)

90-15x+43=8x+18

90+43-18=8x+15x

115=23x

x=5

angle QST: 90-(15*5-43)=90-(75-43)=58

angle RSQ: 90-58=32

6 0
3 years ago
26. Students who take a statistics course are given a pre-test on the concepts and skills for the first chapter of a statistics
hjlf

The test statistic value lies to the right of the critical value. So we have sufficient evidence to reject the null hypothesis.

<h3>What are null hypotheses and alternative hypotheses?</h3>

In null hypotheses, there is no relationship between the two phenomenons under the assumption or it is not associated with the group. And in alternative hypotheses, there is a relationship between the two chosen unknowns.

Students who take a statistics course are given a pre-test on the concepts and skills for the first chapter of a statistics course.

Then they are given a post-test once the professor has concluded lecturing on the material.

Pre-test and post-test scores for 4 students in an elementary statistics class are given below.

Then we have

\mu _d = \mu _{post} - \mu _{pre}

Then the null hypotheses and alternative hypotheses will be

H₀: \mu _d = 0

Hₐ: \mu _d > 0

Then the test statistic will be

\rm \overline{x} _d = \dfrac{\Sigma x_d}{n} = \dfrac{15+12+10+1}{4}\\\\\overline{x} _d = 9.5

Then

\rm S_d = 6.02

The test statistic value is given by

\rm t = \dfrac{\overline{x} _d }{\dfrac{S_d}{\sqrtn}} \\\\t = \dfrac{9.5}{\dfrac{6.02}{\sqrt4}}\\\\t = 3.16

Since this is a right-tailed test, so the critical value is given by

\rm t_{n-1}(\alpha ) = t_3 (0.05) = 2.353

Since the test statistic value lies to the right of the critical value. So we have sufficient evidence to reject the null hypothesis.

Hence, we can conclude that \mu _d > 0 that is test scores have improved.

More about the null hypotheses and alternative hypotheses link is given below.

brainly.com/question/9504281

#SPJ1

7 0
2 years ago
PLEASE ANSWER!! ITS URGENT I AM GOING TO DIE THANK YOU
kari74 [83]

Answer:

Hi! The answer is E).

Step-by-step explanation:

In order to find the volume, we must multiply, Length x Width x Height.

The length is 9cm and 5cm. The width is 5cm. And the height is 3cm.

9 \times 5 \times 5 \times 3 = 675

We must remember when finding the volume, the answer must be divided by 3.

675 \div 3 = 225

<em>Hope</em><em> </em><em>this</em><em> </em><em>helped</em><em>!</em>

6 0
3 years ago
Which angle is adjacent to angle BGC
WARRIOR [948]

Answer:

Angle AGF

Step-by-step explanation:

3 0
3 years ago
10 points! Can’t figure this one out
ANEK [815]

Answer:

Its C. you can plug it in to make sure :D

Step-by-step explanation:

4 0
3 years ago
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