1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Scrat [10]
3 years ago
12

Solve: 3a - 15 = 6 a=

Mathematics
2 answers:
Assoli18 [71]3 years ago
4 0

Answer: a=7

<u>Reorder the terms</u>

<u></u>-15 + 3a = 6<u></u>

<u></u>

Solving for variable 'a'.

<u> </u>

Move all terms containing a to the left, all other terms to the right.

<u>Add '15' to each side of the equation.</u>

<u></u>-15 + 15 + 3a = 6 + 15<u></u>

<u></u>

<u>Combine like terms: -15 + 15 = 0 </u>

<u></u>0 + 3a = 6 + 15\\3a = 6 + 15<u></u>

<u></u>

<u>Combine like terms: 6 + 15 = 21 </u>

<u></u>3a = 21<u></u>

<u></u>

<u>Divide each side by '3'. </u>

<u></u>a = 7<u></u>

DENIUS [597]3 years ago
3 0

Answer:

a=7

Step-by-step explanation:

3a - 15 = 6

3a = 21 -> 6+15

21/3 = 7

You might be interested in
How do I find point-slope form???
Nana76 [90]
I believe the answer is: By using the point slope formula, which states that a given point (x1, y1) and a slope m, the equation of the line can be written as y - y1 = m(x - x1)
8 0
4 years ago
Negative 10.9p plus 3.9 equals negative 9.18.... what does p equal
Julli [10]

Answer:

-1.2

Step-by-step explanation:

10.9p+3.9=-9.18

Subtract 3.9 from -9.18 to isolate the variable.

10.9p=-13.08

Divide -13.08 by 10.9

-13.08/10.9=-1.2

Which equals

p=-1.2

4 0
4 years ago
You invest $1000
Shkiper50 [21]

i dont speak English 3456

6 0
2 years ago
Progress
irina [24]

An expression represents the perimeter, in centimeters, of this triangle is 6q + 8r - 5s.

<u>Given the following data:</u>

  • a = (q + r) centimeters.
  • b = (5q - 10s) centimeters.
  • c = (5s + 7r) centimeters.

<h3>What is a triangle?</h3>

A triangle can be defined as a two-dimensional geometric shape that comprises three (3) sides, three (3) vertices and three (3) angles only.

<h3>How to calculate the perimeter of a triangle?</h3>

Mathematically, the perimeter of a triangle can be calculated by using this formula:

P = a + b + c

<u>Where:</u>

a, b, and c are length of sides.

Substituting the given parameters into the formula, we have;

P = q + r + 5q - 10s + 5s + 7r

P = 6q + 8r - 5s centimeters.

Read more on perimeter of triangle here: brainly.com/question/27109587

#SPJ1

7 0
1 year ago
Leah likes to stretch 5 minutes for every 10 minutes of dancing. How many minutes should she stretch if she is doing a 50 minute
tangare [24]
Let's set up a proportion.
5/10=?/50
We know that ten times 5 equals 50, so we can multiply the numerator, 5, by 5 to get our answer (what you do to the denominator, you must also do to the numerator).
5x5=25
The answer is 25,
7 0
4 years ago
Other questions:
  • A triangle has angles measuring 2x°, x° and x°. Write an equation that can be solved to find the value of x. Then, find the meas
    7·1 answer
  • Aaron has a digital scale. He puts a marshmallow on The digital scale and it reads 7.2 grams. How much would you except 10 marsh
    7·1 answer
  • Smith chose the underlined words for a reason. What
    13·1 answer
  • What is the equation of the line, in slope-intercept form, that passes through (3, -1) and (-1, 5)? y = -3/2x+7/2 2y = -3x + 7 2
    7·1 answer
  • The selling price of a refrigerator is $948.75. If the markup is 25% of the dealer's cost, what is the dealer's cost of the refr
    12·1 answer
  • What’s the answer to this question?
    6·1 answer
  • What does x equal ?<br> quick answer!!!
    14·1 answer
  • Martha's bakery started with 200 cupcakes in the morning. After a busy afternoon there were only 60 cupcakes left. By what perce
    8·1 answer
  • 40 pages read in 20 minutes. what is the unit rate?
    13·1 answer
  • The following is a conversion table for hours and minutes. Which numbers belong in the hours column?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!