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
VladimirAG [237]
2 years ago
8

Find the solution of the system of equations. 10x+10y=40 5x+3y=8

Mathematics
1 answer:
ddd [48]2 years ago
7 0

Answer:

x = -2 & y = 6

Step-by-step explanation:

10x+10y=40

10x+10y+ -10y=40+-10y

10x=-10y+40

\frac{10x}{10} =\frac{-10y+40}{10}

x=-y+4

5x+3y=8

5(-y+4)+3y=8

-2y+20=8

-2y+20+-20=8+-20

-2y=-12

\div2

y=6

x=-y+4

x=-6+4

x=-2

Hope this helps.

You might be interested in
HELP ME please this is due tomorrow
bonufazy [111]

Answer:(12 cm) x (7 cm) x (6 cm) x 8.4 =

4.2336 liters

4 0
2 years ago
Please answer !!Urgent ​
motikmotik

I'm sorry I don't know what this is can you explain it sike

7 0
3 years ago
Which is a prime number<br>a.67<br>b.65<br>c.63<br>d.60
juin [17]
The answer is 67 :)))
4 0
3 years ago
Read 2 more answers
Can you help me out on this question?
astra-53 [7]

Answer:

4. x= 18

Step-by-step explanation:

We solve the problem like this:

Since 3 is proportional to 6 and 9 is proportional to x, we set up a proportion.

3/9 = 6/x  

We then use cross-multiplication to solve for x.

7 0
3 years ago
Calvin had 30 minutes in time-out. For the first 23 1/3 minutes, Calvin counted spots on the ceiling. For the rest of the time,
scoundrel [369]

Answer: \frac{20}{3}\ minutes or 6 \frac{2}{3}\ minutes

Step-by-step explanation:

For this exercise you can convert the mixed number to an improper fraction:

1. Multiply the whole number part by the denominator of the fraction.

2. Add the product obtained and the numerator of the fraction (This will be the new numerator).

3. The denominator does not change.

Then:

23\frac{1}{3}= \frac{(23*3)+1}{3}= \frac{70}{3}\ minutes

You know that he had 30 minutes in time-out, he counted spots on the ceiling for \frac{70}{3} minutes and the rest of the time he made faces at his stuffed tiger.

Then, in order to calculate the time Calvin spent making faces at his stuffed tiger, you need to subract 30 minutes and \frac{70}{3} minutes:

30\ min-\frac{70}{3}=(\frac{3(30)-70}{3})=\frac{20}{3}\ minutes or 6 \frac{2}{3}\ minutes

7 0
3 years ago
Read 2 more answers
Other questions:
  • Johnny is 52 inches tall . max is 65 inches tall. What percent of Johnny height is max
    10·1 answer
  • Use the following figure to answer the questions. Isosceles trapezoids ABCD and WXYZ are similar to each other.
    12·1 answer
  • A cafeteria manager needs to know how many apples and bananas to to order. He asked students to choose either an apple or a bana
    11·1 answer
  • 30 points please help thanks❤❤❤❤❤
    15·2 answers
  • If f(x) = 5x + 40, what is f(x) when x = -5?
    5·1 answer
  • The sum of a number is 25 and 5 is 7
    14·1 answer
  • All of the following are equivalent, except _____.
    9·2 answers
  • Lucy has ⅓ of dog food left. Lucy splits the dog food between her 3 dogs.What fraction of the original bag does each dog get?
    13·1 answer
  • Identify the slope of the graphed line:
    12·1 answer
  • A spinner has 5 equally sized sections, 2 of which are gray and 3 of which are blue. The spinner is spun twice. What is the prob
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!