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Leya [2.2K]
3 years ago
13

What is the result when 4x^2-17x+36 is subtracted from 2 x^2-5x+25?

Mathematics
2 answers:
timama [110]3 years ago
4 0
2x^{2} - 5x + 25 - (4 x^{2} - 17x + 36) 

=  2x^{2} - 5x + 25 -4 x^{2} +17x -36

= (2-4) x^{2} + (-5+17)x + 25 - 36

= -2 x^{2} + 12x - 11
Katen [24]3 years ago
4 0
2x^2-5x+25-(4x^2-17x+36)=\\
2x^2-5x+25-4x^2+17x-36=\\
-2x^2+12x-11
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A good-quality measuring tape can be off by 0.49 cm over a distance of 23 m. What is the percent uncertainty?33% Part (a) If 44
V125BC [204]

Step-by-step explanation:

First:

(Error/Total )x 100%

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Second:

(Absolute uncertainty/mean) x100%

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8 0
3 years ago
Your plan was to be on the road by 9 A.M. but you did not leave the garage until 10 A.M. You then drove with the cruise control
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Answer:

The average speed over the time interval from 9 A.M. to noon was of 33.33 mph.

Step-by-step explanation:

The average speed is given by the following equation:

v = \frac{d}{t}

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50 = \frac{d}{2}

d = 50*2

d = 100

You traveled 100 miles.

What was your average speed over the time interval from 9 A.M. to noon

From 9 A.M. to 10 A.M, you did not travel.

From 10 P.M. to noon, 100 miles.

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The average speed over the time interval from 9 A.M. to noon was of 33.33 mph.

8 0
3 years ago
the mean percentage of a population of people eating out at least once a week is 57% with a standard deviation of 3.5 %. assume
zhuklara [117]
Given:
Population proportion, \mu _{p} = 57% = 0.57
Population standard deviation, σ  = 3.5% = 0.035
Sample size, n = 40
Confidence level = 95%

The standard error is
SE_{p} =  \sqrt{ \frac{p(1-p)}{n} } = \sqrt{ \frac{0.57*0.43}{40} } =0.0783

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The sample proportion lies in the interval
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Answer: Between 0.417 and 72.4), or between (41% and 72%)

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