MATHEMATICS MIDDLE SCHOOL

if 3 is added to a number and the sum is tripled, the result is 19 more than the number. find the number

Answers

Answer 1

Answer:

Answer:

The number is 5

Step-by-step explanation:

if 3 is added to a number and the sum is tripled, the result is 19 more than the number

(n+3) *3 = n+19

Distribute the 3

3n +9 = n+19

Subtract n from each side

3n-n +9 = n-n+19

2n +9 = 19

Subtract 9 from each side

2n+9-9 = 19-9

2n =10

Divide by 2

2n/2 =10/2

n=5

The number is 5

Answer 2

Answer:

Answer:

(x + 3)·3 = x + 19 --> x = 5

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The endpoints of a line segment are at the coordinates (–6, 3, 4) and (4, –1, 2). What is the midpoint of the segment?a
(–1, 1, 3)

b
(–2, 2, 6)

c
(–10, –2, 2)

d
(–5, –1, 1)

Answers

Answer:

$( - 1,1,3 )$

Step-by-step explanation:

Use the midpoint formula:

$((x_1+x_2)/(2),(y_1+y_2)/(2), (z_1+z_2)/(2) )$

We want to find the midpoint of the line

that has endpoints.

$(( - 6+4)/(2),(3+ - 1)/(2), (4+2)/(2) )$

We simplify to get;

$(( - 2)/(2),(2)/(2), (6)/(2) )$

This finally gives:

$( - 1,1,3 )$

The correct answer is A.

Bernice placed 5 green paper clips, 6 blue paper clips, and 9 yellow paper clips in a container. She will reach into the container and pull out one paper clip without looking. What is the probability that the paper clip she chooses will be green?

Answers

There are 5 green paperclips. To find the probability, you have to take that number out of the total number of paperclips. That will get you your answer.

Please hurry it’s urgent
Thank you for your time

Answers

Answer: the answer is A because you have to multiply 4 and 3 then divide that number by 34,100 then you will get your answer and if it is close to to number A than that is you correct answer. Sorry for the mess ups. You welcome

Step-by-step explanation:

Is it a parallelogram or not?