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
Airida [17]
3 years ago
11

−4x+7y=3 solve for x and y

Mathematics
1 answer:
kap26 [50]3 years ago
3 0
-4x+7y=3
-4x=3-7y
x=(3-7y)/4

-4x+7y=3
7y=3+4x
y=(3+4x)/7

Sorry if this is wrong!
You might be interested in
Julianne opens a dance studio. Her start-up costs for the building, advertising, and supplies $52,000. Each day, she spends $650
Yuki888 [10]

The equation is:  960d-650d=52000 and Julianne will begin making a profit after 168 days.

<em><u>Explanation</u></em>

Her total start-up cost is $52,000.

Each day, she spends $650 on operating costs (like utilities and wages) and she earns $960 per day from her students' lesson fees.

If the number of days to overcome the start-up cost is  d , then

the total operation cost spent in  d days = \$650d and

the total students' lesson fees earned in  d days = \$960d

<em><u>Part A:</u></em>   The equation to represent the situation will be:   960d-650d=52000  

<u><em>Part B:</em></u><em> </em><em>  </em>Julianne will begin making a profit when....

960d-650d>52000\\ \\ 310d>52000\\ \\ d>\frac{52000}{310}\\ \\ d >167.741... \approx 168

So, Julianne will begin making a profit after 168 days.

5 0
3 years ago
the equation I=prt solves for the amount of simple interest a bank account receives after a certain period of time. I stands for
Dominik [7]

Answer:

The percentage rate is 4.5%.

Step-by-step explanation:

The given formula for simple interest is I=prt where I=simple interest, p=principle, r = percentage rate and t=time.  In the problem, we are told that after six years (t=6), $7000 (p=7000) earns $1890 (I=1890).  We can then substitute in the values for three of our variable to get the following:  1890 = (7000)(6)r.  Multiplying 7000x6 = 42000 giving us 1890 = 42000r.  Using inverse operations, we divide both sides of the equation by 42000 to get 0.045 = r.  Since r = percentage rate, we need to multiply our decimal by 100 to find the percentage.  0.045 x 100 = 4.5%.

5 0
3 years ago
Convert: 150 oz = _____ lb _____ oz ​
yulyashka [42]

16 oz = 1 lb

Step-by-step explanation:

9.375 lb = 150 oz

          Answer:

    9.375 lb

    150 oz

its d or e

8 0
3 years ago
Read 2 more answers
What is the time 5 minutes before noon
Rashid [163]

Answer:

11:55

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The value of a new car decreases by about 15% in the first year. How much will a car be worth after one year if its initial valu
kicyunya [14]

Answer:

$12,750

Step-by-step explanation: when you do the math you get it your welcome my G

7 0
3 years ago
Other questions:
  • the initial price for a horse is $39000.It is discounted by 40% and then by further 14%.Find the price of the item.
    9·1 answer
  • find the value of an investment of $3500 for 3 years at an interest rate of 5.6% if the money is compounded weekly
    5·1 answer
  • Express 0.8 in the form of p by q​
    10·1 answer
  • Suppose you are interested in comparing brand A interior latex paint to brand B interior latex paint. Design an experiment to de
    13·1 answer
  • I want to know how to get the answer which is “3/10” can anyone tell me the steps to solving this probability problem?
    6·1 answer
  • Aretha Foster, single, is marketing director for
    7·1 answer
  • May I get some help with this, please?!? I will greatly appreciate it!
    6·2 answers
  • Is the following number rational or irrational? <br> - 13/12<br> A: rational <br> B: irrational
    12·2 answers
  • Write a polynomial if x-intercepts at x=2, and -3
    10·1 answer
  • 1. Between which two whole numbers is
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!