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
marin [14]
3 years ago
15

A method of solving a system of equations in which one variable is replaced by an expression using the other variable as a repre

sentation for that variable.
I need to know what this is called
Mathematics
2 answers:
9966 [12]3 years ago
7 0

Answer:

Substitution method.

Step-by-step explanation:

Using the substitution method is very easy, you have a system of equations like the next one:

x+y=7

x-y=3

So you clear one of them for one of the variable and then substitute that cleared variable in the other equation:

x=3+y

*x+y=7

*(3+y)+y=7

*3+2y=7

*2y=7-3

*2y=4

*y=2

That is hte method of substitution.

Tanya [424]3 years ago
3 0
I believe it is referred to as The Substitution Method.
You might be interested in
In the following isosceles trapezoid, find the value of x.
yulyashka [42]

Answer:

24

Step-by-step explanation:

22 - 8 = 14

14/2 = 7

Pythagoras theorem

25 squared -7 squared = 576

square root of 576 = 24

5 0
3 years ago
A shoe company found that 4.25% of the production is defective. The company
nlexa [21]

1190 pairs of shoes are defective

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

Given that shoe company found that 4.25% of the production is defective

The company  made 28,000 pairs of shoes

To find: Number of pairs of defective shoes

From given information, 4.25% of the production is defective which means 4.25% of 28,000 pairs of shoes

Defective shoes = 4.25% of 28,000

Defective shoes = \frac{4.25}{100} \times 28000

Defective shoes = 4.25 \times 280 = 1190

Thus 1190 pairs of shoes were defective

6 0
3 years ago
Kira has breakfast in a restaurant. She leaves $1.80 for a 20% tip. What is the price of Kira's breakfast, before the tip?
ki77a [65]

Answer:

percent* base = amount

.2 * x = 1.80

x = 1.80/.2

x= $9

Step-by-step explanation:

5 0
3 years ago
Add or subtract. Write the answer is simplest form.
Arisa [49]
1: 11/28
2: 67/72
3: 1 11/30
5 0
3 years ago
The ratio of oranges to apples in Helen's basket is 4:3. The basket has 12 apples in it. How many oranges are in the basket?
frez [133]

Answer:

16 oranges

Step-by-step explanation:

The ratio of oranges to apples is 4:3 which means that for every four oranges, there are 3 apples.

Since there are 12 apples in the basket, to find the number of oranges, set up a ratio.

4/3 = x/12 (x represents the number of oranges)

Cross multiply.

48 = 3x

Divide by 3.

x = 16

There are 16 oranges in the basket.

Hope that helps.

3 0
3 years ago
Other questions:
  • Please help me out with this simple question I REALLY NEED THIS :((((((((
    6·1 answer
  • What is the approximate volume of the cone
    11·1 answer
  • Which of the following expressions could be used to find the area of the larger rectangle? 3(64 mm2) 9(64 mm2) 9(32 mm2) 3(576 m
    8·1 answer
  • A total of 600 tickets were sold for the school play. they were either adult tickets or student tickets. the number of student t
    15·1 answer
  • If 3x +y=12 find x when y=-15
    15·1 answer
  • The museum guide provides 10 brochures telling about the museum's history to each tourist group. If 12 groups visited today, how
    10·2 answers
  • Solve for R: P = R/V
    8·1 answer
  • Solve for x. Enter the solutions from least to greatest. Round to two decimal places. (x+7)^2 - 11 = 0
    12·1 answer
  • Janella is using this model of two squares and a right triangle to prove the Pythagorean Theorem.
    10·1 answer
  • WILL GIVE BRAINLIEST LOOK AT PHOTOS FOR QUESTION
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!