Write an algebraic equation for each question below and then solve the equation.

Mathematics

1 answer:

irina [24]3 years ago

8 0

Let the original number of rara coins that Jerry had back then be x.

now if he sold 50 rare coins, the coins left will be x - 50

x - 50 = 225

x = 225 + 50

x = 275

You might be interested in

A caterpillar is 2.83 centimeters long how long is it to the nearest whole number

Kruka [31]

To round 2.83 centimeters to the nearest whole number, use the following:
"five or above, give it a shove. four or below, keep it low."
So, since the number is 2.83, keep the 3 low (make it a zero)
Now the number is 2.8
Since 8 is over 5, you round up.
2.83 has become the whole number 3

7 0

3 years ago

Read 2 more answers

Let f(x)=7x^2-8. find f(a^2)

strojnjashka [21]

Answer:

$\large\boxed{f(a^2)=7a^4-8}$

Step-by-step explanation:

$f(x)=7x^2-8\\\\f(a^2)\to \text{put}\ x=a^2\ \text{to the equation of the function}\ f:\\\\f(a^2)=7(a^2)^2-8\qquad\text{use}\ (a^n)^m=a^{nm}\\\\f(a^2)=7a^{2\cdot2}-8\\\\f(a^2)=7a^4-8$

6 0

3 years ago

Solve the system by the elimination method. <br> x + y - 6 = 0<br> x - y - 8 = 0

shepuryov [24]

X+y=6 --> Equation 1
x-y=8 --> Equation 2
Equation 1 - Equation 2 =
2y =-2
y = -1

x+y = 6 --> Plug y value into equation
x + (-1) = 6
x-1 = 6
x = 7

y = -1, x = 7

5 0

3 years ago

What is the domain of the function (-1,1) (0,0) (1,2)

Butoxors [25]

Answer:

Domain: {-1 , 0 , 1}

Step-by-step explanation:

function (-1,1) (0,0) (1,2)

Domain is a set of x -values

so domain: {-1 , 0 , 1}

4 0

3 years ago

One plus a number y is no more than -13

lana [24]

1+y>-13. I'm assuming that you're reffering to wanting an equation by your question.

3 0

3 years ago