All categories

1 year ago

Three times the sum of a number and 7 is equivalent to 57.

Mathematics

2 answers:

Zarrin [17]1 year ago

6 0

Equivalent expressions are expressions that have the same values.

The expression is $3(x + 7) = 57$ and the number is 12

Represent the number with x.

So, the sum of a number (x) and 7 would be represented as: x + 7

Three times the sum would be represented as: 3(x + 7)

This expression is equivalent to 57.

So, we have:

$3(x + 7) = 57$

Divide both sides of the equation by 57

$x + 7 = 19$

Subtract 7 from both sides of the equation

$x + 7 - 7 = 19 - 7$

$x = 12$

Hence, the number is 12

Read more about equivalent expressions at:

brainly.com/question/2972832

TiliK225 [7]1 year ago

5 0

Answer:

3(x+7)=57

Step-by-step explanation:

3 is being multiplied by "the sum of a number(or x) and 7". So, we write it as 3(x+7). That is equal to 57, so that makes the expression 3(x+7)=57.

-hope it helps

You might be interested in

Rona was driving on an asphalt road that had a 35 mile per hour speed limit posted. A lrr r deer jumped out from the side of the

sleet_krkn [62]

Answer:

The answer is "The cops were correct because the average speed would have been about 39.73 miles per hour as per the calculations."

Step-by-step explanation:

Finding the average skid distance:

$Average=\frac{70+71+72}{3}=\frac{213}{3}=71$

Calculating the skid:

$S=\sqrt{30 \times D \times f\times n}\\\\$

$=\sqrt{30 \times 71 \times 0.78\times 0.95}\\\\=\sqrt{1,578.33}\\\\=39.73$

8 0

2 years ago

HELP PLEASE PLEASE HELP Solve for t. -10t − -17t − 10t + -13 = 11

Marta_Voda [28]

-10t - (-17t) - 10t + (-13) = 11 (two negative signs makes a positive)

-10t + 17t - 10t - 13 = 11 Combine like terms

-3t - 13 = 11 Add 13 on both sides

-3t = 24 Divide -3 on both sides

t = -8

8 0

2 years ago

Mr brown shares with the class that 70%of the students got a A on the English vocabulary quiz if mr brown has 100 students creat

Harrizon [31]

70% of 100 is 70 students. Unfortunately I can not make a model for you but here's an idea: Draw a large circle. Next, draw a line halfway down the circle, and halfwar down draw another line to the right, this making it look like three fourths. Then, color the larger space in one color and the other smaller space that looks like a small slice of pie in another color. On the larger piece write "70% who got an A" and on the smaller write "30% who didn't get an A" At the bottom you can write 70 students out of 100 got an A on the test.

6 0

2 years ago

Complete the problems in measurements. Show answers in simplest terms.

Gala2k [10]

1lb = 16 oz
5(16)=80 lbs of dog food
80/7=11.4 days

3 0

2 years ago

The sea surface range -2°c to 31°c find the difference between the maximum and minimum temperature

Igoryamba

Answer:

33 °C

Step-by-step explanation:

The bigger number is the maximum temperature.

Let’s call it T₂.

Then T₂ = 31 °C

=====

The smaller number is the minimum temperature

Let’s call it T₁.

Then T₁ = -2 °C

=====

The difference be the maximum and minimum temperature is

Diff = T₂ -T₁ Insert the values

Diff = 31 – (-2)

When you see a minus sign followed by a negative sign, turn them both into plus signs.

Then

Diff = 31 + (+2)

Diff = 31 + 2

Diff = 33 °C

6 0

2 years ago