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zmey [24]
3 years ago
11

Help me and show your work please Only number 11

Mathematics
1 answer:
balandron [24]3 years ago
7 0

Answer:

4

Step-by-step explanation:

HK is double of HW, so: 42=2(x^2+5)

Then solve. Divide both sides by 2.

21=x²+5

16=x²

4=x

I hope this helps and good luck on the rest of your HW

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12x15y=4140; x+y= ? <br> solve.
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Answer: The number of $12 tickets and $15 sold are 120 and 180 respectively.

Step-by-step explanation:

The given equation is:

12x + 15y = 4140             .....(1)

Where,

x stands for $12 tickets and y stands for $15 tickets

According to the question:

x + y = 300           ....(2)

Now solving equation 1 and 2.

From equation 2:

x = 300 - y

Now putting this expression in equation 1.

12x + 15y = 4140

12(300 - y) + 15y = 4140

3600 - 12y + 15y = 4140

3600 + 3y = 4140

3y = 4140 - 3600

3y = 540

y = 180

And,

x = 300 - y = 300 - 180 = 120

The number of $12 tickets sold = x = 120

The number of $15 tickets sold = y = 180

Thus, the number of $12 tickets and $15 sold are 120 and 180 respectively.

4 0
3 years ago
Find the output value of the function. f(x)=5x-8 for f(7)
Molodets [167]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
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Answer:

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Answer:

1/6

Step-by-step explanation:

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