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gavmur [86]
2 years ago
11

The graph of y = 4x^2 - 4x - 1 is shown use the graph to find estimates for the solutions of a and b

Mathematics
1 answer:
8_murik_8 [283]2 years ago
5 0

Answer:

a) -0.25 and 1.25

b) -0.5 and 1.5

Step-by-step explanation:

a) For 4x^2-4x -1 = 0

What we have to do here is to simply find he points on the x-axis in which the graph crosses it

we have this as;

approximately-0.5 and 1.5

what we are saying is that the plot crosses the x-axis at x = -0.25 and x = 1.25

ii) what we have to do here is to find the point at which y = 2

After finding this point, we trace it to the plot sideways, before we trace to the x-axis

By tracing, we have the crossing on the x-axis at these points at -0.5 and 1.5

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to figure this problem out you put
a as 4
keep b as b since you don’t know what it is
c as 6

4 squared=16
6 squared=36

16+b^2=36
36-16=20
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(4,?) is on the line below.  Find the other half of the coordinate. y= 2 7 x−3 y=27x-3
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3 years ago
A recipe requires 1/5 cup of milk for each 1/4 cup of water. How many cups of water are needed for each cup of milk?
Lelechka [254]

Answer:

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Step-by-step explanation:

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4 0
2 years ago
Perimeter of an isosceles triangle is 90 m. If the length of the two equal sides is three fourth of the unequal side , find the
Sveta_85 [38]

Answer:

The length of the equal side is 27 meters each and that of the unequal side is 36 meters

Step-by-step explanation:

An isosceles triangle is a triangle with two sides being equal (also two equal base angles).

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x + x + y = 90

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Therefore:

2(3/4y) + y = 90

3/2y + y = 90

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y = 90/2.5

y = 36 meters

Also x = 3/4 * 36 = 27 meters

The length of the equal side is 27 meters each and that of the unequal side is 36 meters

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3 years ago
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Dmitrij [34]
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4 0
3 years ago
Read 2 more answers
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