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FromTheMoon [43]
3 years ago
5

Please help. Thank you

Mathematics
1 answer:
Aloiza [94]3 years ago
8 0
Part A)
From equation (1) the value of y comes out to be:

y = 4x - 15

Using this value, in equation 2, we get:

5x + 3(4x-15) =  40
5x + 12x - 45 = 40
17x = 85
x = 5

y = 4x - 15
⇒
y = 4(4) - 15
y = 20 - 15
y = 5

Therefore, the solution set to the given equations is (4, 5)

Part B)
The graph of the lines intersect at one point, so they have a unique solution.(First option is correct)
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The recommended daily calcium intake for a 20-year-old is 1,000 milligrams (mg). One cup of milk contains 299 mg of calcium and
Alex787 [66]
One <u>possible inequality</u> is:

299m+261j ≥ 1000.

Explanation:

m is the number of cups of milk and j is the number of cups of juice.

Each cup of milk contains 299 mg of calcium.  This gives us 299m mg of calcium for m cups of milk drank.

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Together, this would be a total of 299m+261j mg of calcium.

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3 years ago
Rewrite the polynomial 6x4 − 24x3 + 72x2 by factoring out the GCF
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The trick here is to recognize one or more factors common to each term.  For example,  6x4 − 24x3 + 72x2 = x^2(6x^2 - 24x + 72), so x^2 is one common factor.  Looking at (6x^2 - 24x + 72), you can easily see that 6 is a common factor, so now we have (6)(x^2)(x^2 - 4x + 12).  These last 3 terms do not have a common factor, so the factoring process stops here:

(6)(x^2)(x^2 - 4x + 12)


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4 years ago
Please help last question!
Maru [420]

Answer:

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Please help me on this thank you
irinina [24]
Well you have to show us the line plot
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I hope this helps and I apologize if I'm wrong.

Can you tell me if I was wrong or right?

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