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omeli [17]
3 years ago
8

. Hernandez bought 18 pens for her class. Highlighters cost $3 each, and gel pens cost $2.50 each. She spent a total of $50. Use

a system of equations to find the number of highlighters and gel pens Mrs. Hernandez bought. Enter your answers in the boxes.
Mathematics
2 answers:
cestrela7 [59]3 years ago
5 0
Before we solve for anything, let's assign variables for highlighters and gel pens. Highlighters can be 'h,' and gel pens can be 'g'.

We can make two equations from what we've been given so far. Since we know that Hernandez bought 18 pens, we know that:

h + g = 18

And since we know the cost of an individual gel pen and highlighter as well as the total price, we can make another equation:

3h + 2.50g = 50

We can simplify the first equation by keeping only one variable on one side:

h + g = 18
h = 18 - g

Now that we have a value for h, we can assign it to the second equation:

3h + 2.50g = 50
3(18 - g) + 2.50g = 50
54 - 3g + 2.50g = 50

Simplify:
-0.50g = -4
0.5g = 4
5g = 40
g = 8

Put this value into the equation we made earlier:

h = 18 - g
h = 18 - 8
h = 10

Hernandez bought 10 highlighters and 8 gel pens.
Zolol [24]3 years ago
4 0

Answer:

There are 9 highlighters and  8 gel pens

Step-by-step explanation:

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jarptica [38.1K]

Answer:

$5,333.33

Step-by-step explanation:

If the a month spent on rent is a percentage of the monthly budget of the  Fernando family, it means that the product of the percentage and the monthly budget gives the amount spent on rent.

Let the monthly budget be T (measured in $). Given that  the family spends $800 per month on rent and this is 15% of their monthly budget, it means that

15% * T = 800

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The family's monthly budget is $5,333.33

4 0
3 years ago
If an arithmetic series has a1 equals=44​, d equals 5, and n=24​, what is sn​?
White raven [17]
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6 0
4 years ago
Let ƒ(x) = x^2 + 2x and g(x) = 2x. Evaluate the composition (ƒ ∘ g)(2).
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Answer:

The answer is option D.

Step-by-step explanation:

f(x) = x² + 2x

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To find (ƒ ∘ g) wherever you see x in f(x) replace it with g(x)

That's

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Hope this helps you.

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GenaCL600 [577]

Answer:

There wasn't really a question here but for both the answers is

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Step-by-step explanation:

since the first year Mr.Jackson sold 3 computer monitors then in the second year he must've multiplied the times he had sold it which means 4 x 3 which equals 12

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