3 years ago

I need help with the second once and can someone tell me if the first answer I did is ok or good

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

6 0

Answer:

Sorry i dont know

Step-by-step explanation:

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Jason has 4 gallons of hand sanitizer that contains 25% alcohol. He wants to make a hand sanitizer that contains 50% alcohol. Ho

alexandr402 [8]

Answer:

2 gallons of pure alcohol

Step-by-step explanation:

Let x represent the number of gallons of pure alcohol needed, and create an equation:

4(0.25) + x(1) = (x + 4)0.5

1 + x = 0.5x + 2

x = 0.5x + 1

0.5x = 1

x = 2

So, 2 gallons of pure alcohol should be added.

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2 years ago

Solve for x x + 6=18

Verizon [17]

X=12

This is because you subtract 6 from both sides to get the x isolated.

So x=18-6

x=12 :)

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3 years ago

Create a system of equations to represent the word problem. Then solve using the linear combination/elimination method. Show all

Leno4ka [110]

Answer:

Solution given:

model A printers [a] prints=80books per day

model B printers [b] prints=55books per day

total no of printers =9

no of model A printers be x

and

no of model B printers be [9-x]

According to the question;

ax+(9-x)b=670 books

substituting value of a and b; we get

80x+(9-x)55=670

80x-55x+495=670

25x=670-495=175

x= $\frac{175}{25}$ =7

So;

no of model A printers =x=7

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is your answer.

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2 years ago

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If f(x) = 8 – 10x and g(x) = 5x + 4, what is the value of (fg)(-2)?

Shkiper50 [21]

Answer:

Step-by-step explanation:

I'm going to assume you meant "what is the value of f(g(-2))?"

g(-2) = 5(-2) + 4 = -6

f(-6) = 8 - 10(-6) = 68

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3 years ago

On a coordinate plane, the x-axis is labeled Pepperoni Pizzas and the y-axis is labeled Cheese Pizzas. Point A is (3, 2), point

MissTica

Answer:

b and d

Step-by-step explanation:

just took the test

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2 years ago

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