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
trasher [3.6K]
3 years ago
13

Worth 30 points. Help a homie out

Mathematics
1 answer:
Sauron [17]3 years ago
8 0

Answer:

Multiply the second equation by -3 to get -3x - 9y = -30.

Step-by-step explanation:

When eliminating, you need to find a term with the negative of that term to combine so that they cancel each other out. An example would be 3x in the first equation and (-3x) in another equation so that when added, it becomes: 3x-3x = 0.

In the second equation, you see that there is already an x there and you just need to make it become (-3x). Thus, you multiply the entire second equation by -3 to make -3x. Once you have done that, you can combine the two equations and eliminate 3x from the first equation.

3x + 5y = 30

-3x - 9y = -30

3x + 5y -3x - 9y = 30 + (-30)

0 - 4y = 30 - 30

-4y = 0

<em>You can find y and then x later on from here. </em>

You might be interested in
2. Graph x &lt; 8 and x &gt; -1.
dimulka [17.4K]

Answer:

I'll try my best in explaining the steps.

Considering both signs are greater than and less than sign, its an open circle.

For the first equation, you would have an open circle, basically one that isn't colored in, on 8 on the number line. The arrow would be pointing to the left because the equation is telling us numbers that are less than 8.

For the second equation, you would have an open circle, basically one that isn't colored in, on -1 on the number line. The arrow would be pointing to the right because the equation is telling us numbers that are greater than -1.

Step-by-step explanation:

7 0
2 years ago
If you multiply two binomials together, what type of polynomial will the product be?
Arturiano [62]
Depends
it can be a trinomial example
(x-3)(x-4)=x²-7x+12

it can be a binomial example
(x-3)(x+3)=x²-9

depends
7 0
3 years ago
PLEASE HELP!
eduard

Answer:

B) 2828.427g

Step-by-step explanation:

Hope this helps!

7 0
2 years ago
Read 2 more answers
Subtract. Write your answer in simplest form.<br><br> 6 3/4 - 2 3/20<br><br> I need a mixed number
umka21 [38]

Answer:

4 3/5

Step-by-step explanation:

6 3/4-2 3/20=x

3/4=15/20

15/20-3/20=12/20=6/10=3/5

6-3=3+3/5=4 3/5

6 0
2 years ago
Read 2 more answers
The four swimmers listed in the table are trying out for the swim team. Two will make the team. How many different combinations
ratelena [41]
Number of possible combinations = (4x3) ÷ 2 = 6

Answer: There are 6 possible combinations.
8 0
3 years ago
Other questions:
  • I really need help, I am on the practice.
    10·1 answer
  • William and amy are stuffing envelopes for a charity. today William stuffed a total of 70 envelopes. this was 10 more than twice
    7·2 answers
  • Plz help me I will give brainlest!!!
    6·1 answer
  • The points I, J, K and L all lie on the same line segment, in that order, such that the ratio of IJ:JK:KL is equal to 2:5:5. If
    12·1 answer
  • Find an equation of the plane passing through (0 comma negative 1 comma 1 )that is orthogonal to the planes 3xplus4ynegative 3ze
    12·1 answer
  • A)Jodis car used 12 gallons of gas to travel 456 miles. how many miles did her car travel per gallon of gas? show your work.
    10·1 answer
  • Alice took a standardized test. If 96% of the students scored below Alice, 2% had the same score, and 2% had a higher score, wha
    9·1 answer
  • Question in picture solve
    5·2 answers
  • Given that k-5, k+7, k+55 are three consecutive terms in a geometric sequence, solve for k​
    15·1 answer
  • Help now plsssssssssssssssssssssss
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!