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3 years ago

Factored form of 2x*2+13x+20

Mathematics

2 answers:

cricket20 [7]3 years ago

6 0

Answer:

(2x+5)(x+4)

Step-by-step explanation:

After factoring we can find that it equals

(2x+5)(x+4)

Tema [17]3 years ago

3 0

Answer:

(2x +5) (x+4)

Step-by-step explanation:

2x*2+13x+20

(2x + )(x+ )

Factoring 20 into 4 and 5 so we can get 13 in the middle

(2x +5) (x+4)

2*4 +5 = 13 for the middle term

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7 > -4 subtract from both sides<br>I don't get this question plz help..

11Alexandr11 [23.1K]

You need to subtract 7 from both sides, is how I'm interpreting it. So 0>-11

4 0

4 years ago

The average fuel efficiency of U.S. light vehicles for 2005 was 21 mpg. If the standard deviation of the population was 2.9 and

statuscvo [17]

Answer:

1) The probability that the mean mpg for a random sample of 25 light vehicles is 0.042341.

2) between 20 and 25 --> 21-25/2.9 = -1.38

Step-by-step explanation:

Problem #1:

Using the z-score formula, z = (x-μ)/σ/n, where x is the raw score = 20 mpg,μ is the population mean = 21 mpg , σ is the population standard deviation = 2.9, n = random number of samples.

= z = 20 - 21/2.9/√25
= z = -1/2.9/5
= z = -1.72414

<em>P-value from Z-Table:</em>

Problem #2:

6 0

2 years ago

Help plss ASAP plsss

vladimir1956 [14]

Answer:

15/16

Step-by-step explanation:

got it right

7 0

3 years ago

Tell whether the value is a solution of the inequality.<br> 14 > -2n +4; n=-5

qwelly [4]

Answer:

the value of -2n+4 is -6 so it is correct, 14 is indeed greater than -6

Step-by-step explanation:

you multiply -2 by -5 which is equal to -10 then you add more which is equal to -6

5 0

3 years ago

Political parties rely heavily upon polling to measure their support in the electorate. In a country with four major political p

liberstina [14]

Answer:

a) The claim is not plausible

b) claim is plausible and the type of bias here is response bias

Step-by-step explanation:

Given data:

Number of political parties = 4

coffee party got the support of 435 out of 1183 randomly selected voters in a poll conducted.

<u>A)</u><u> Construct and interpret a 98% confidence interval to estimate the proportion of voters who support the coffee party </u>

H0 ( null hypothesis ) : p = 0.42

Ha ( alternate hypothesis ) : p ≠ 0.42

z value for 98% confidence interval = 2.326

using 98% confidence interval the value of p = ( 0.3668, 0.3686 )

hence the claim is not plausible

<u>B) Determine the type of bias </u>

Assume the actual number of people = 1200

and 17 people did not respond

hence number of people who responded = 1200 - 17 = 1183

Therefore the claim by the manager is plausible because 17 people did not respond and the type of bias here is response bias

<em>attached below is a detailed solution of the problem of the A part </em>

4 0

3 years ago