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
sveta [45]
2 years ago
6

What is the solution of the system of equations y=2/3x+5 7x-3y=15

Mathematics
1 answer:
alisha [4.7K]2 years ago
5 0

Answer:

(6, 9)

Step-by-step explanation:

Plug in 2/3x + 5 as y into 7x - 3y = 15

7x - 3(2/3x + 5) = 15

7x - 2x - 15 = 15

Add like terms:

5x - 15 = 15

5x = 30

x = 6

Then, plug in 6 as x into y = 2/3x + 5 to solve for y:

y = 2/3x + 5

y = 2/3(6) + 5

y = 9

So, the solution to the system of equations is (6, 9)

You might be interested in
A car with an initial cost of $33,000 is decreasing in value at a rate of 7% each year. Write the exponential decay function to
Brut [27]

Answer:

n= 11.65 years

Step-by-step explanation:

Giving the following information:

Present Value (PV)= $33,000

Future Value (FV)= $15,000

Decrease rate (d)= 7%

<u>To calculate the number of years it will take to reach $15,000; we need to use the following formula:</u>

<u></u>

n= ln(FV/PV) / ln(1+d)  

n= ln(15,000/33,000) / ln(1.07)

n= 11.65 years

7 0
3 years ago
Help plzz i will give you brianliest Which best describes the graph of the function f(x) = 3(1.8)^x A) The graph passes through
DanielleElmas [232]

Answer:

Step-by-step explanation:

Start with why C isn't the answer.

y = 1.8^0 . The power is zero. Anything to the zero power (anything except 0 to the 0 power) is 1. So 1.8^0 is 1 not something else. C assumes that somehow 0,1.8 turns into 1.8. It does not. The second part is also wrong but you don't need it. However here it is.

x = 0        y = 3

x = 1         y = 3 * 1.8 = 5.4

x = 2        y = 3 * 1.8^2 = 3*3.24 = 9.72

You should be able to see that if you multiply 5.4 by 3, you don't get 9.72

C just does not work.

=======

The actual answer is A. That's exactly what the graph does. If you multiply 5.4 * 1.8 you should get 9.72. Just for completeness, I've included the graph.

6 0
3 years ago
Can you please help me thanks
mash [69]

Answer:

x = 9.6

Step-by-step explanation:

Before we can figure out what x is, we need to figure out what the unlabeled side is. To figure that out, multiply the hypotenuse (12) by the sine of the angle labeled (34)

12 * sin(34)

<em>sin(34) equals 0.559192903470747; I'll round it to 0.6 for convenience.</em>

12 * 0.6

<em>Now simply multiply 12 by 0.6 to get 7.2.</em>

The unlabeled side is approx. 7.2 units long.

Now we know what the unlabeled side is. Now, to find x, find the square root of 12 squared minus 7.2 squared.

x = √12² - 7.2²

<em>12 squared is 144; 7.2 squared is 51.84.</em>

x = √144 - 51.84

<em>Subtract 51.84 from 144 to get 92.16.</em>

x = √92.16

<em>The square root of 92.16 is 9.6 (on the spot!).</em>

x equals 9.6.

6 0
3 years ago
If F(x)=4x-3over7,which of the following is the inverse of F(x)
KatRina [158]
7 over 4x-3 you just flip the fraction to get the inverse
3 0
3 years ago
Read 2 more answers
Estimate and then solve 8,784 ÷ 61 = ___. answers: 133 134 143 144 I WILL MARK U BRAINLEIST IF ITS RIGHT​
Oxana [17]

Answer:

The answer is 144

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • In 2004,there were 320 endangered mammals in the world about 75% of these mammals reside outside of the United States.about how
    12·1 answer
  • Capitalism promotes poverty because having a surplus of workers provides people who are willing to work for low wages
    9·1 answer
  • Here is a scale drawing of a window frame that uses a scale of 1 cm to 6 inches.
    11·1 answer
  • Mike has 3 1/2 ounces of sugar to put in his coffee. If he actually only puts in 1 5/9 ounces of sugar, about how much sugar doe
    14·2 answers
  • Fill in the table using this function rule.<br> y=-3x + 5<br><br> Х Y<br> - 4<br> -2<br> 0<br> 2
    9·1 answer
  • Michelle has <img src="https://tex.z-dn.net/?f=3%5Cfrac%7B3%7D%7B8%7D" id="TexFormula1" title="3\frac{3}{8}" alt="3\frac{3}{8}"
    13·2 answers
  • A cab company charges $8 to enter a cab, then 42 cents a mile. If the ride cost $19.76, how long was the trip, in miles?
    5·2 answers
  • .<br> y - 6 = 4(x - 4)<br> Which of the following shows a graph of the equation above?
    7·1 answer
  • Neal prepared 3 meals each day. He prepared 27 meals in all. What equation represents the number of days
    14·2 answers
  • What is the average distance covered in meters?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!