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
vladimir2022 [97]
3 years ago
10

Solve the system of linear equations by substitution. x+4y=14 3x+7y=22

Mathematics
1 answer:
m_a_m_a [10]3 years ago
4 0

Answer:

Hello There!!

Step-by-step explanation:

1)x+4y=14

Add -4y to both sides.

x+4y+−4y=14+−4y

x=−4y+14

3)Add -7y to both sides.

3x+7y+−7y=22+−7y

3x=−7y+22

Step 2: Divide both sides by 3.

3x/3=−7y+22/3

x=-7y/3+22/3

hope this helps,have a great day!!

~Pinky~

You might be interested in
A soda machine takes 3 seconds to fill a 15-ounce cup. If t represents the time in seconds, which equation can you use to find h
Svet_ta [14]

Information we know:

a 15 ounce cup takes 3 second to fill

determine variables:

x=3

y=15

rate:

y/x=3/15= 0.2

fixture an equation:

y=kx

y=0.2x

plug in 40 for x:

y=0.2(40)

=8

Thus, it should take 8 seconds to fill a 40-ounce cup of soda.

8 0
3 years ago
Read 2 more answers
Find the area of the trapezoid.
goldenfox [79]

Answer:

<h3>105m²</h3>

Step-by-step explanation:

AREA=

\frac{(a + b)}{2}  \times h

\frac{15 + 6}{2}  \times 10

=105m²

6 0
3 years ago
PLEASE HELP ME!!!
Fynjy0 [20]
<h3>Answer:  15 years old</h3>

=============================================

Explanation:

m = Maggie's age (some positive whole number)

4m = four times her age

4m-7 = seven years younger than 4m = brother's age

Add up her age (m) and her brother's age (4m-7) to get a sum of 68.

m+(4m-7) = 68

5m-7 = 68

5m = 68+7

5m = 75

m = 75/5

m = 15

Maggie is currently 15 years old.

Her brother is currently 4m-7 = 4*15-7 = 60-7 = 53 years old.

Their current year ages add to: 15+53 = 68 which confirms the answer.

6 0
3 years ago
24. In order to make the playoffa soccer team must get 20 points during the regular season. The team gets 2
stira [4]

Answer:10×12????=120 i think thats what your aski,

Step-by-step explanation:

7 0
3 years ago
Slope 4 through (7,4)
m_a_m_a [10]

Answer:

What exactly is it asking to do?

Step-by-step explanation

5 0
3 years ago
Other questions:
  • A pizza place sells pizzas for $7 each plus a $4 delivery charge per order. If Pat orders 3 pizzas to be delivered, what will be
    15·2 answers
  • On Saturday, amir ran 1 3/4 miles, and Janie ran to 2 1/2 miles. Who ran further? How much further? Write an equation to find "d
    13·1 answer
  • James had a peach that was 98 mm in diameter. One day
    13·1 answer
  • Write 5.19 x 10^2 in standard form.
    7·1 answer
  • What is the discriminant of the polynomial below?<br>2x + 47-9​
    9·1 answer
  • the vertex of the parabola represented by f(x)=x^2-2x+6 has coordinates (1,5). Find the coordinates of the vertex of the parabol
    7·1 answer
  • Perimeter = 5 cm and 3 cm. what is the missing cm if total is 12 cm?
    11·1 answer
  • Write an equation of the line in slope-intercept form for the graph<br><br> Please helppp
    12·1 answer
  • Simplify.<br> c) <img src="https://tex.z-dn.net/?f=%5Csqrt%7B25%2B10%5Csqrt%7B5%7D%20%2B5%20%7D" id="TexFormula1" title="\sqrt{2
    8·2 answers
  • 3. Give an example of an expression with a rational exponent and explain how to convert it into radical form.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!