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lara [203]
2 years ago
7

Simplify the expression 3(x+1)−2(3x+7) A −3x−11 B−3x−10 C−3x−8 D−3x+17

Mathematics
2 answers:
Anni [7]2 years ago
7 0
The answer is letter A -3x-11
mixas84 [53]2 years ago
6 0

Answer: A: -3x-11

Step-by-step explanation:

Factor: 3x +3 - 6x - 14 (negative of the second distribution).

Combine terms with x: 3x - 6x = -3x

Combine terms that don't have x: 3 - 14 = -11

Combine both: -3x - 11

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Please help.. will mark brainlyiest
irina1246 [14]

Answer:

B. Dog 1's position is Dog 2's position reflected across the x-axis; only the signs of the y-coordinates of Dog 1 and Dog 2 are different.

Step-by-step explanation:

First it is reflected on the x-axis because it is above and below. if its was the y-axis (which it is not) it would be side to side, if that makes sense.

Secondly the x values are the same, they are both -6. So, the y values are the ones that are different.

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3 years ago
Amanda’s Training Continues…..Amanda is training to run a marathon. She must follow a strict schedule to make sure she is ready
Paladinen [302]

Based on her on training regiment, Amanda will be able to run 26 miles in the 25th week.

<h3 /><h3>What is the total number of miles Amanda will run every week?</h3>

Amanda will run 2 miles in the first week and then 1 less mile in the following week. Then 3 more miles in the week after.

Week 1 - 2 miles

Week 2:

= 2 - 1

= 1 mile

Week 3:

= 1 + 3

= 4 miles

Week 4:

= 4 - 1

= 3 miles

Week 5:

= 3 + 3

= 6 miles

From the given pattern, Amanda increase the number of miles ran by 2 miles every 2 weeks.

The number of miles ran every other week would therefore be:

Week 7 = 8 miles

Week 9 = 10 miles

Week 11 = 12 miles

Week 15 = 16 miles

Week 19 = 20 miles

Week 25 = 26 miles

In conclusion, she would reach her goal in 25 weeks.

Find out more on solving schedule problems at brainly.com/question/20020676.

3 0
3 years ago
An educator wants to determine whether a new curriculum significantly improves standardized test scores for third grade students
NikAS [45]

Answer:

Independent

Step-by-step explanation:

Dependent Sampling:

Dependent sampling is one in which the individuals in one sample are used to determine the individuals in the other sample.

But the third dash graders are divided into two groups independent of each other.

So the sampling is independent.

It is qualitative because it is showing quality irrespective of the number of students .

Quantitative Sampling is one in which the results change with the number of the individuals / tests etc. But in this experiment the number of the students is fixed so it is showing quality rather than quantity.

8 0
4 years ago
Mr. Johnson did a survey of his class to find out everyone's favorite food.
Lubov Fominskaja [6]

Answer:

75

Step-by-step explanation:

10+6+4= 20 sooo

150 divided by 20 = 7.5

7.5 = 75

4 0
3 years ago
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