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3 years ago

What are the zeroes of f(x) = x2 − 9x + 20?

1 answer:

8 0

First, factor the polynomial. Then, set each binary answer to zero and solve. Those are the values of x where the graph either crosses or touches the graph.
x²-9x+20
(x-5)(x-4)

x-5=0 | x=5
x-4=0 | x=4

The zeros are 4 and 5

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Johann wants to find a rectangular solar panel with an area of 128 cm. If the

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Answer:

The length of rectangular panel is 6.4 cm.

Step-by-step explanation:

We are given the following information in the question:

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4 years ago

Which equation describes how the parent function, y = x cubed, is vertically stretched by a factor of 4?

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Answer:

Step-by-step explanation:

x=4

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3 years ago

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The total length of two ships is 1841 feet. The difference in their lengths is 13 feet. Find the length of each ship.

lilavasa [31]

9514 1404 393

Answer:

927 ft

914 ft

Step-by-step explanation:

The lengths are half the sum plus or minus half the difference:

1841/2 ± 13/2 = {1854/2, 1828/2} = {927, 914} . . . feet

Let x represent the shorter length. Then x+13 is the longer length. Their total is ..

x +(x +13) = 1841

2x = 1841 -13

x = (1841 -13)/2 . . . . half the sum minus half the difference

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3 years ago

Solve algebraically the simulaneous equations y=2x^2-3x-10<br>2x-y=-2

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Answer:

X=-3/2, X=4

Step-by-step explanation:

Really easy

Image attached

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