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
Murljashka [212]
3 years ago
15

If 3x + 5y = 42 and 9x +7y = 78, then x + y = ?

Mathematics
1 answer:
kumpel [21]3 years ago
8 0
3x+5y=42

9x+7y=78

adding above equation

12x+12y=120

x+y=10
You might be interested in
What is 2+2
velikii [3]

Answer:

lol 4

Step-by-step explanation:

one one one one equals four

8 0
3 years ago
As a salesperson, you are paid $50 per week plus $2 per sale. This week you want your pay to be at least $100. What is the minim
DENIUS [597]
Let s represent the number of sales, and t the total pay
the equation to represent this situation is t = 2s + 50
so set t to 100, and solve for s

100 = 2s + 50
50 = 2s
25 = s

you need to make at least 25 sales
5 0
4 years ago
Find the product.<br><br> a^4(3a ^2 - 2a + 1)
Vikki [24]

<span>                   a⁴(3a² - 2a + 1)

We just have to multiply each term inside the parentheses by  a⁴  .

           a⁴</span><span>(3a²        )  =  3a⁶
 
           a⁴</span><span>(    - 2a    )  =  -2a⁵
 
           a⁴</span><span>(            1)  =  a⁴

Now, just addum up :      3a⁶ - 2a⁵ + a⁴</span>


7 0
4 years ago
Plus help I need it fast​
GrogVix [38]

Answer:

Rains and Splash

Step-by-step explanation:

2 verbs rains and splash

5 0
3 years ago
Read 2 more answers
The model represents an equation. What value of x makes the equation true?
Cerrena [4.2K]

Answer:

C

Step-by-step explanation:

(-3) x 4 = (-12) + 6 = -6

3 + 3 = 6 + (-12) = -6

(-6) = (-6)

Because adding positive to negative is like subtracting the negative if that makes sense.

Hope this helps!

Have a great day!

Plz mark brainliest

6 0
3 years ago
Read 2 more answers
Other questions:
  • PLZ HELP ME ASAP!!!!!!<br> WHAT I CHOOSE IS IT THE RIGHT ANSWER????
    9·2 answers
  • Solve for x -4x - 2 -42
    12·1 answer
  • What is the measure of angle 1 in degrees?
    14·1 answer
  • Can someone help me with these two questions I’m stuck! For the first one I thought I would need to multiply 5 by pi but it turn
    10·2 answers
  • A city has a population of 2,000 if 1,500 residents speak Spanish what percent of the population is Spanish speaking
    15·2 answers
  • 4.
    14·1 answer
  • Will give crown thanks
    7·2 answers
  • Identify the like terms pairs; select all that apply.<br> 8r + 3s + 8 – 3s – 4r
    5·1 answer
  • Multiply. Simplify if possible. If you can simplify, what is the GCF you used ? what is 5/9 x 2/3
    8·1 answer
  • Directions: Solve the following system by the elimination method. 1/5 * x + y = 6/5; 1/10 * x + 1/3 * y = 7/10 Write answer as a
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!