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bogdanovich [222]
3 years ago
11

Somebody help on number 7 please. Thanks

Mathematics
1 answer:
Tatiana [17]3 years ago
8 0
42. because. 12
+30
=42
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It belongs to all of them.
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3 years ago
What is the equation of the parabola?
irina1246 [14]

Because the parabola opens down and the vertex is at (0, 5), we conclude that the correct option is:

y  = -(1/8)*x² + 5.

<h3>Which is the equation of the parabola?</h3>

The relevant information is that we have the vertex at (0, 5), and that the parabola opens downwards.

Remember that the parabola only opens downwards if the leading coefficient is negative. Then we can discard the two middle options.

Now, because the parabola has the point (0, 5), we know that when we evaluate the parabola in x = 0, we should get y = 5.

Then the constant term must be 5.

So the correct option is the first one:

y  = -(1/8)*x² + 5.

If you want to learn more about parabolas:

brainly.com/question/4061870

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In triangle ABC, a = 9, c = 5, and B = 120°. Find b2.
valentinak56 [21]
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8 0
3 years ago
One number is 3 less than twice another. If their sum is 39 find the numbers
DedPeter [7]

Answer:

The numbers are 14 and 25

Step-by-step explanation:

Let one of the numbers be x. The second number we are told is 3 less than twice x. The second number will thus be;

2x - 3

The sum of the numbers is thus;

x + (2x - 3) = 3x - 3

But the sum of the numbers is said to be 39, therefore;

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The second number is thus;

2(14) - 3 = 28 - 3 = 25

5 0
3 years ago
I need help plzzzzzzzzzz
maria [59]

Answer:

2:2 and 3:4

hope it helps

4 0
2 years ago
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