All categories

2 years ago

Jenna has 38 coins. She uses 19 coins to buy a notebook. How many coins does she have left?

Mathematics

2 answers:

marusya05 [52]2 years ago

7 0

Answer: 19 coins

Step-by-step explanation:

38-19=19

To check, take any one of the nubers and replace it with x, and when you solve for x. you'll get that number back. For example:

Let x represent the amount used to buy a notebook

19+x=38

x=38-19

x=19

lapo4ka [179]2 years ago

4 0

38 coins - 19 coins = 19 coins

You solve the problem by subtracting how many coins she used by how many coins she has

You might be interested in

Thanks for the help!

NikAS [45]

Answer:

Step-by-step explanation:

So we have the piecewise function:

$f(x)= \begin{cases}\sqrt{2x} & \text{if }x$

And we want to find f(8).

Since our input value is 8, choose the equation that fits our input.

The first equation demand x to be less than 3. 8 is not less than 3, so we won't use that.

The second equation demand x to e greater than or equal to 3 and less than 8. 8 is not less than 8. So, we won't use that.

The third equation demands x to be greater than or equal to 8. 8 is greater than or equal to 8, so we'll use the third equation.

So:

$f(x)=42\text{ if }x\geq 8$

$f(8)=42$

There're nothing more to do, we're done :)

The answer is A.

Edit: Improved Format

3 0

4 years ago

A is what percent of B? d) A = 8 oz, B = 1.5 lb Plz help need by today

creativ13 [48]

Answer:

33% Decimal form: .333333 repeating.

Step-by-step explanation:

Took test. I see the question you was trying to do.

8 0

3 years ago

3m ≤ –9 solve the inequality

erica [24]

ANSWER: The inequality form is: m < -3

6 0

3 years ago

(-6)*(-6)*(-6)*z*z the expression is

ra1l [238]

Answer:

-216z^2

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

The inflation rate of the U.S. dollar is 3.1 percent. What this means is that every year, prices increase by 3.1 percent. If a p

Alisiya [41]

The answer should be $2.04

8 0

3 years ago

Read 2 more answers