All categories

3 years ago

How do you do solving two-step equasions

Mathematics

1 answer:

Natali5045456 [20]3 years ago

3 0

Answer:

The goal of solving two-step equations is to isolate the variable (get it by itself) and solve for the value using the following steps:

1. Add or subtract the constant term from both sides of the equation.

2. Multiply or divide the coefficient from both sides of the equation.

Step-by-step explanation:

Solving equations means using inverse (opposite) operations.

subtraction - addition

multiplication - division

In order to get the variable by itself, you need to first get rid of the constant (the number by itself) by adding or subtracting from both sides of the equal sign. Then, you multiply or divide by the coefficient of the variable to solve for the variable.

*See included picture.

You might be interested in

What are the names of three collinear points

seropon [69]

The answer is B. Points F, C and D are collinear

4 0

3 years ago

Read 2 more answers

Solve for x 9x + 1 equals 25 + x edg 2020? x=2 x=3 x=4 x=5

gregori [183]

No no no no no no no no no no no no

3 0

3 years ago

Which of the following expressions represents a function? (5 points) a {(1, 2), (4, −2), (8, 3), (9, −3)} b y2 = 16 − x2 c 2x2 +

34kurt

Answer: Option "a" is the only expression that represents a function.

Step-by-step explanation:

A function f(x) = y is a "operator" that takes an input element, x, and assigns it to only one output element, y.

So, if we have that for a given value of x.

f(x) = y and f(x) = h

where y and h are different values, then this is not a function, because is assigning the input value x to two different output values.

Let's see the different options:

a) {(1, 2), (4, −2), (8, 3), (9, −3)}

This points are of the form (x, y)

We can see that each value of x is assigned to only one value of y, so this can represent a function.

b) y^2 = 16 − x^2

Ok, suppose that x = 0, then:

y^2 = 16 - 0 = 16

then we have that y*y = 16.

So y can take two different values:

y = 4 ---> 4*4 = 16

y = -4 ---> -4*-4 = 16.

So this is not a function.

c) 2x^2 + y^2 = 5

First, we want to isolate y in one side:

y^2 = 5 - 2*x^2

Here we have a similar case to the option b, and we can use a similar argument to prove that this is not a function, so we can discard this.

d) x = 7.

Ok, this is not a relation between two variables, so this is not a function, as if x is the input value, we have only one value of x that solves the equation.

7 0

4 years ago

pheobe andy and polly share £270 pheobe gets three times as much as andy who hets twice as much as polly how much do they each g

KIM [24]

Money of Phoebe - 3 times as much as Andy
Money of Andy - 2 times as much as Polly
Total money of Phoebe, - £270
Andy and Polly

*Solution

Let
B - Phoebe's money
A - Andy's money
L - Polly's money

1. The money of the Phoebe, Andy, and Polly, when added together would total £270. Thus,

B + A + L = £270 (EQUATION 1)

2. Phoebe has three times as much money as Andy and this is expressed as

B = 3A

3. Andy has twice as much money as Polly and this is expressed as

A = 2L (EQUATION 2)

4. This means that Phoebe has ____ as much money as Polly,

B = 3A
B = 3 x (2L)
B = 6L (EQUATION 3)

This step allows us to eliminate the variables B and A in EQUATION 1 by expressing the equation in terms of Polly's money only.

5. Substituting B with 6L, and A with 2L, EQUATION 1 becomes,

6L + 2L + L = £270
9L = £270
L = £30

So, Polly has £30.

6. Substituting L into EQUATIONS 2 and 3 would give us the values for Andy's money and Phoebe's money, respectively.

A = 2L
A = 2(£30)
A = £60

Andy has £60

B = 6L
B = 6(£30)
B = £180

Phoebe has £180

5 0

3 years ago

Find the area of a parallelogram. A parallelogram is shown with horizontal edge measuring 60 feet and a slanted upwards edge mea

Alexxandr [17]

Answer:

1,200 feet

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers