Hello can someone help me with this please

How to solve a system of two linear equation???

svet-max [94.6K]

You can solve a system of equations 3 ways.

1. Elimination

This method is eliminates one of the variables in the system of equations to get 1 equation with only one 1 variable.

2. Graph

You graph both of the equations and find where they intersect if at all.

3. Substitution

If you know the value of one of variables, you can substitute it back into the equation.

6 0

4 years ago

Cecily is comparing two checking accounts. Checking account A has a monthly fee of $16 and a per-check fee of $0.08, while check

Tpy6a [65]

Answer:

(1) 0.08x + 16

(2) 0.08x + 16=0.12x + 14

Step-by-step explanation:

Checking account A has a monthly fee of $16 and a per-check fee of $0.08

Per check fee is a constant rate that is 0.08

Let x represents the number of checks Cecily writes per month

1 check fee = 0.08

x checks fee = 0.08x

monthly fee is $16 , we add that as well

So total monthly fee charges for account A is

0.08x + 16

checking account B has monthly fee of $14 and a per-check fee of $0.12.

1 check fee = 0.12

x checks fee = 0.12x

monthly fee is $14 , we add that as well

So total monthly fee charges for account B is

0.12x + 14

(2) To find number of checks write per month for the accounts to charge the same in fees

WE set both expression , account A = account B

0.08x + 16=0.12x + 14

Subtract 0.12x on both sides

-0.04x + 16 = 14

Now subtract 16 on both sides

-0.04x = -2

Divide by -0.04 on both sides

So x= 50

7 0

4 years ago

What is the slope of the line between (-4, 4) and (-1, -2)?<br> 1<br> 2<br> -2<br> -1

zubka84 [21]

Answer: -2, which is choice C

Work Shown:

$(x_1,y_1) = (-4,4) \text{ and } (x_2,y_2) = (-1,-2)\\\\m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\m = \frac{-2 - 4}{-1 - (-4)}\\\\m = \frac{-2 - 4}{-1 + 4}\\\\m = \frac{-6}{3}\\\\m = -2\\\\$

The slope is -2

7 0

2 years ago

Find the area of the shaded region in the figure below, if the radius of the outer circle is 4 and the radius of the inner circl

denis-greek [22]

TheThe area of the shaded region if the radius of the outer circle is 4 and the radius of the inner circle is 2 is 12π.

<h3>Area of the shaded region</h3>

Area of a circle = πr²

r =radius of the circle

Area of the outer circle:

Area of the outer circle = π(4)²

Area of the outer circle = 16π

Area of the inner circle:

Area of the inner circle = π (2)²

Area of the inner circle = 4 π

Area of the shaded Region :

Area of the shaded Region = 16π - 4 π

Area of the shaded Region = 12π

Therefore the area of the shaded region if the radius of the outer circle is 4 and the radius of the inner circle is 2 is 12π.

Learn more about area of the shaded region here: brainly.com/question/19577281

#SPJ1

5 0

2 years ago

12ad^3 and which terms are like terms?<br> 15a^3d<br> 12d^3<br> 3ad^3<br> 10ad

storchak [24]

Like terms are terms with the exact same variables, and the exact same degree of each variable...simply put, the exponents of each variable have to be exactly the same.
The given term 12 ad³ has variables a and d. a has a degree of 1 and d has a degree of 3.
The term 3ad³ has the same variables and the same degree, and is therefore the like term.

8 0

3 years ago