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
Scrat [10]
3 years ago
10

If 2x + 5y = 21 and x + y = 3, then what is the solution

Mathematics
1 answer:
Viefleur [7K]3 years ago
8 0
2x+5y=21, x+y=3
y=3-x
2x+5y=21
2x+5(3-x) =21
2x+15-5x=21
2x-5x+15=21
-3x+15=21
-3x=21-15
-x=6/3
-x=2
x=-2

You might be interested in
What is the solutions of the equation (4 x + 3)^2=18
tekilochka [14]

Answer:

(4x+3)^2 = 18

16x+9=18

16x=9

<u>x=9/16</u>

Step-by-step explanation:

4 0
3 years ago
Noah and Lin are marketing paper cones to hold popcorn to hand out at parent math night. They want the cones to hold 9 cubic inc
Vadim26 [7]

Answer: r = 1.69 inches

              h = 2.15 inches

Step-by-step explanation: Volume of a solid is the amount of space contained within a solid.

Volume of a cone is directly proportional to radius and height:

V=\frac{1}{3}\pi r^{2}h

They want the cones to hold the same volume of 9 cubic inches.

If height is 3:

9=\frac{1}{3}\pi r^{2}3

\pi r^{2}=9

r^{2}=2.864

r = 1.69 inches

When height is 3, radius is 1.69 inches for a cone to have 9 cubic inches of volume.

If radius is 2:

9=\frac{1}{3}\pi (2)^{2}h

h=\frac{9(3)}{4 \pi}

h = 2.15 inches

If radius is 2 inches, height of the cone is 2.15 inches.

6 0
3 years ago
Nvm bro i got the answer
KIM [24]
Ok and have a nice day
6 0
2 years ago
Mr.Mason takes two-thirds of his body weight and drinks that amount of gatorade in ounces per day. If Mr.Mason drinks 118 ounces
denis-greek [22]

The total weight of Mason is 177

<em><u>Solution:</u></em>

Given that, Mr.Mason takes two-thirds of his body weight and drinks that amount of gatorade in ounces per day

Mr.Mason drinks 118 ounces each day

Let "x" be the total weight of Mr.Mason

Therefore, we can say,

Two third of body weight = Amount of gatorade drank in ounces per day

Two third of x = 118

\frac{2}{3} \text{ of } = 118\\\\\frac{2}{3} \times x = 118\\\\2x = 118 \times 3\\\\2x = 354\\\\x = \frac{354}{2}\\\\x = 177

Thus total weight of Mason is 177

6 0
3 years ago
43. Ricardo just received a shipment of 50 tool sheds for his garden supply store. Each shed costs him $40. Which of the followi
lions [1.4K]

Answer:

its the one with 2000$ in it

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Any help would be appreciated. (Check the picture)
    13·1 answer
  • Anyone who understand this for 16 point s plz
    14·1 answer
  • a history teacher is writing a test worth 100 points. She uses multiple-choice questions worth 6 points each and true/false ques
    13·1 answer
  • There are 1644 students in central high school. There are 50 more girls then boys. How many boys are there ?
    8·1 answer
  • A farmer is tracking the number of soybeans his land is yielding each year. He finds that the function f(x) = −x2 + 20x + 100 mo
    8·1 answer
  • What is the solution 1/x= x+3/2x^2
    9·1 answer
  • Automobile racing, high-performance driving schools, and driver education programs run by automobile clubs continue to grow in p
    14·1 answer
  • Solve the following <br><br>1) 2(x + 3) = x - 4<br>2) 4(5x-2) = 2(9x+3)<br><br>PLS HELP ​
    5·1 answer
  • What is the slope of a line that passes through (2,-5) and (6,-2)​
    10·1 answer
  • A theater wants to take in at least $2000 for the matinee. Children’s tickets cost $5 each and adult tickets cost $10 each. The
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!