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
bixtya [17]
4 years ago
13

2x - 7y = 13 3x + y = 8

Mathematics
1 answer:
Rufina [12.5K]4 years ago
6 0
<span>A) 2x - 7y = 13
B) 3x + y = 8
Multiplying equation B by 7
B) 21x + 7y = 56 then adding it to A
</span><span>A) 2x - 7y = 13
23x = 69
x = 3
y = -1
</span>
You might be interested in
Please only answer if your certain it will mean a lot I can give extra points or brain list if you like or a thanks please don’t
BigorU [14]

Answer:

Ms. Cortez earns 500 dollars for working 30 hours.  It's the last choice.

Step-by-step explanation:

You just have to substitute 30 into the equation in place of x, since x represents hours.

f(30) = 50 + 15(30)

f(30) = 50 + 450

f(30 = 500

3 0
3 years ago
How do I divide 178.8 by 24?
Doss [256]
<span>7.45 is the final answer

178.8/ 24 = about 7.45</span>
4 0
3 years ago
The value of my hundred digit is 300, the value of my tens digit is zero. The value of my ones digit is an even number greater t
rusak2 [61]

Answer:

308 would be the number you are looking for.

Step-by-step explanation:

6 0
3 years ago
To express the polynomial d^2+d^3-d+3 in standard form, which term should be written first?
ozzi
When you want to write a polynomial, you should write the term with the highest degree first.
Here, it should go like this: d^3 + d^2 - d + 3
This means that the term which should be written first is the cubic term. 
6 0
3 years ago
Read 2 more answers
Lou has an account with $10,000 which pays 6% interest compounded annually. If to that account, Lou deposits $5,000 at the begin
katovenus [111]

Answer:

Option d. $22154 is the right answer.

Step-by-step explanation:

To solve this question we will use the formula A=P(1+\frac{r}{n})^{nt}

In this formula A = amount after time t

                        P = principal amount

                        r = rate of interest

                       n = number of times interest gets compounded in a year

                        t = time

Now Lou has principal amount on the starting of first year = 10000+5000 = $15000

So for one year A=15000(1+\frac{\frac{6}{100}}{1})^{1\times1}

= 15000(1+.06)^{1}

= 15000(1.06) = $15900

After one year Lou added $5000 in this amount and we have to calculate the final amount he got

Now principal amount becomes $15900 + $ 5000 = $20900

Then putting the values again in the formula

A=20900(1+\frac{\frac{6}{100}}{1})^{1\times1}

= 20900(1+.06)^{1}

= 20900(1.06)=22154

So the final amount will be $22154.

3 0
3 years ago
Other questions:
  • Roni and Allie are mowing the grass at the soccer field. Roni has a riding lawn mower and can mow the field in 30 minutes. Allie
    9·2 answers
  • Suppose a spider moves along the edge of a circular web at a distance of 3cm from the center.
    8·1 answer
  • Redon is 6ft 2in tall, and his shadow is 4ft 1in long. At the same time, a building casts a shadow that is 19ft 10in long. estim
    13·1 answer
  • Which of the following are solutions to the equation below 4x2-20x+25=10
    7·2 answers
  • Choose one <br> a. 7.8 ft<br> b. 8.8 ft<br> c. 8.3 ft<br> d. 9.2 ft
    8·1 answer
  • A total of 600 of the 1,000 people living in a retirement community classify themselves as Republicans, while the others classif
    10·1 answer
  • PLEASE HELP ME OUT ONLY IF YOU KNOW THE ANSWER!! THANKS SO MUCH!!
    13·1 answer
  • A recipe that makes 10 raspberry muffins calls for / teaspoons of baking powder. How much baking powder is needed to make 3 doze
    12·2 answers
  • As a part of a customer loyalty program, a restaurant's computer chooses orders at random to receive a free appetizer. Each orde
    6·1 answer
  • A method of sampling that enables researchers to specify for each case in the population the probability of its inclusion in the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!