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elena-14-01-66 [18.8K]
3 years ago
9

Guys please help me with this please, please

Mathematics
2 answers:
Natali5045456 [20]3 years ago
4 0

what is that I think that is a fraction?

Crank3 years ago
3 0
Answer would be C )

Hope it helps :)
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A business executive bought 40 stamps for
alekssr [168]

Answer:

32 33-cent stamps, 8 23-cent stamps

Step-by-step explanation:

In order to solve this question, we need to set up a system of equations. Also known as solving for two variables (the number of each stamp).

Let's set x to be the number of 33-cent stamps. Similarly, let's set y to be the number of 23-cent stamps.

To make our first equation, let's think about the number of stamps total we have. We can say:

x + y =40

<em>(AKA - The number of 33-cent stamps, plus the number of 23-cent stamps, equals 40 stamps.)</em>

Now, let's make an equation for the cost of these stamps.

0.33x + 0.23y = 12.40

<em>(AKA - The cost of the stamps in total, should equal $12.40).</em>

So now, we have our two equations:

x + y =40\\0.33x+0.23y=12.40

If you have a TI-84 graphing calculator, you can go to apps -> polysmlt2 -> simultaneous eqn solver, and then input these equations into the menu. This will solve the problem for you.

If you need to do this manually, let's use substitution. Condense our first equation to make it more substitutable.

x+y=40\\x=40-y

Now, let's put this into our second equation.

0.33x+0.23y=12.40\\0.33(40-y)+0.23y=12.40

Distribute, and solve for y.

13.2-0.33y +0.23y =12.40\\13.2-0.1y=12.40\\-0.1y=-0.8\\y=8

Now, we plug this into one of our equations.

x+y=40\\x+8=40\\x=32

In the end, we have thirty-two 33-cent stamps, and eight 23-cent stamps.

3 0
1 year ago
5/1/10x - 6/4/5 = 3/1/4
emmasim [6.3K]
I think the answer is A
8 0
3 years ago
Read 2 more answers
If jenny has 1,490÷6 how will you solve it.
puteri [66]
It's 248.3333 (but with the 3s repeating)
5 0
3 years ago
HELP QUICK.
lakkis [162]
Pretty sure it’s C That one makes the most sense to me please let me know if you get it right
5 0
3 years ago
Read 2 more answers
A paved path is 162 feet long, 12 feet wide, and 4 inches deep. How many cubic feet of concrete will be required for the path?
AVprozaik [17]

Answer:

Step-by-step explanation:

volume of concrete=162×12×4/12=648 ft³

3 0
3 years ago
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