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
arlik [135]
3 years ago
10

5.please help this is timed

Mathematics
2 answers:
natali 33 [55]3 years ago
7 0

Answer:

A

Step-by-step explanation:

julia-pushkina [17]3 years ago
6 0

Answer:

D. (4,-1)

Step-by-step explanation:

So, we have these two equations:

2x + y = 7

x - 2y = 6

Isolate x in the second equation:

x = 2y + 6

Substitute it into the first equation:

2(2y + 6) + y = 7

4y + 12 + y = 7

5y + 12 = 7

5y = -5

y = -1

Plug y back into the second equation:

x - 2(-1) = 6

x + 2 = 6

x = 4

So, the correct answer is D. (4,-1)

<em>Hope this helps!!</em>

<em>- Kay :)</em>

You might be interested in
— 4x — Зу = = 9<br> 5х = 15<br> Help me now
blsea [12.9K]

Answer:

y=-7

x=3

Step-by-step explanation:

I just used a calculator. Hope this helps. :)

8 0
3 years ago
Find the measure of angle b
g100num [7]
The answer for angle b is: 25°
4 0
2 years ago
Read 2 more answers
A negatively charged balloon moves close to another balloon. They then repel each other. What can be said about the other balloo
lana66690 [7]

Answer: B: It has a negative charge.

Step-by-step explanation:

According to theory espoused by the French physicist, Charles-Augustin de Coulomb, like charges charges will repel each other and unlike charges will attract one another.

This means that objects with negative charges will repel each other. As the first balloon in the question was negatively charged, it would only repel the other balloon if it was negatively charged as well.

4 0
3 years ago
A car travels at a speed of 25 miles per hour for t hours
Pepsi [2]

Answer: 25t+45m

Step-by-step explanation:

Really simple because if they traveled 25mi/h for t hours, that makes it 25t miles. They traveled 45mi/h for m hours so it's 45m. If you add them together, 25t+45m.

If this helped, brainliest please.

4 0
3 years ago
Write and solve an equation to represent the following situation.
LuckyWell [14K]

Answer:

6 + 7x = 27

x = 3cm

Step-by-step explanation:

so the question lets us know 3 things:

1) Sarah has a 27 ft pipe

2) she cuts 6 ft off

3) she cuts remaining pipe into 7 equal sections

what we don't know from the question is how big each of those 7 sections were. To form the equation we do this.

Since we know Sarah has 27 ft of pipe that would be our answer of the equation.

Sarah also removed 6 ft and the rest of the pipe she cut up into 7 small sections of equal length. since we don't know the length of the 7 smaller sections we will use the variable X to represent the length. this means that 6ft + 7x (X is the length of the pipes, and we multiply by 7 since there are 7 of them) must equal Sarah's total length of 27ft, therefore meaning our education would be

6 + 7x = 27

to solve for how long each pipe was, we need to solve for X by rearranging the equation as shown bellow.

7x = 27 - 6

7x = 21

x =  \frac{21}{7}

x = 3cm

4 0
3 years ago
Other questions:
  • Equation for "when u divide a number by -5, the result is -2.
    5·1 answer
  • A Food Marketing Institute found that 30% of households spend more than $125 a week on groceries. Assume the population proporti
    8·1 answer
  • The ratio 30 in. To 9ft in simplest form
    7·1 answer
  • Please help me
    13·2 answers
  • roman mixes 1.5 liters of orange juice w 800 milliliters of pineapple juice to make punch, for every 1 liter there are 1000 mill
    6·1 answer
  • How does using a model help me multiply decimals by whole numbers?
    9·1 answer
  • Twice a number decreased by four is greater than ten, what numbers satisfy this condition
    15·1 answer
  • Find the approximate perimeter of △ABC plotted below.
    7·2 answers
  • Maria is m inches tall. Blaire is 2 inches taller than Maria. If Blaire is 52 inches tall, which equation could be used to find
    9·2 answers
  • After allowing 20% discount an article is sold for rs.672 levying 12% VAT, find its market price​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!