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givi [52]
2 years ago
7

Really important please help #8

Mathematics
1 answer:
Paladinen [302]2 years ago
5 0
B is the answer! Enjoy getting it correct!! :)
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An image of a parabolic lens is projected onto a graph.The y-intercept of the graph is (0, 90), and the zeros are 5 and 9. Which
Gnesinka [82]

Step-by-step explanation:

If the zeros are 5 and 9, then the equation will have the form:

y = a (x–5) (x–9)

We know the point (0, 90) is on the curve, so we can use this to find the coefficient a:

90 = a (0–5) (0–9)

90 = 45a

a = 2

y = 2 (x – 5) (x – 9)

6 0
2 years ago
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The graph shows the speed of a ball in free fall for 10 seconds. Which is the constant of proportionality shown in the graph?
Marizza181 [45]

<u>Given</u>:

The graph shows the speed of a ball in free fall for 10 seconds.

We need to determine the constant of proportionality for the given graph.

<u>Constant of proportionality:</u>

The constant of proportionality can be determined using the formula,

\frac{y}{x}=k

Where k is the constant of proportionality.

Let us consider any of the coordinate from the graph and substitute in the formula.

Consider the coordinate (4,40) and substitute in the above formula.

Thus, we have;

\frac{40}{4}=k

10=k

Thus, the constant of proportionality is 10 meters per second squared.

3 0
2 years ago
Tiana has already taken 1 page of notes on her own, and she will take 1 page during each hour of class. In all, how many hours w
Novosadov [1.4K]

Answer:

<u>42 Hours.</u>

Step-by-step explanation:

As an equation where y is the total pages and x is hours of class:

y=1+1x since she started with 1 page and does 1 page per hour.

Setting the total pages she needs as 43 (y=43) we get:

43=1+1x

Subtract one on both sides

42=1x

The 1 doesn't need to be written so

x=42

Therefore, it'll take her 42 hours to write all those notes.

4 0
2 years ago
5. What is the area of the figure to the nearest square centimeter? It is composed of a symmetric hexagonand a semicircle 4 cm6
Nookie1986 [14]
=100.2743338823 which is 100
6 0
2 years ago
What number should go in the space? Multiplying by 1.36 is the same as increasing by _____%.
Nady [450]

Answer:

136%

Step-by-step explanation:

3 0
2 years ago
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