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Nadusha1986 [10]
3 years ago
7

Which is a factor of 2x^2- 12x- 14

Mathematics
1 answer:
lesya692 [45]3 years ago
4 0

Answer:

A

Step-by-step explanation:

2x² - 12x - 14

2(x² - 6x - 7)

2(x² - 7x + x - 7)

2(x - 7)(x + 1)

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Simplify -|-28| + (-5)^2
ExtremeBDS [4]
The answer is -3 because
 
-|28|= -28       now the problem looks like -28+(-5)^2

(-5)^2=25

-28 +25=  -3


3 0
3 years ago
I will give brainliest for question! How many nonzero terms are in the expansion of (x+4)(2x^2+3x+9)-3(x^3-2x^2+7x)?
nataly862011 [7]

Answer:

Four

Step-by-step explanation:

Let's expand and see how many nonzero terms:

⇒ (x+4)(2x²+3x+9)-3(x³-2x²+7x)=

⇒ 2x³ + 3x² + 9x + 8x² + 12 + 36 - 3x³ + 6 x² - 21 x=

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As we see the expression has four nonzero terms

4 0
3 years ago
How long does it take a runner to run 12km if he is running at a speed of 7km/h
Rama09 [41]

Answer:

about an hour and 42 minutes

Step-by-step explanation:

Time=Distance/Speed

3 0
3 years ago
Read 2 more answers
The mean and standard deviation of a normal distribution are 150 and 12 respectively. What percentage of values lie between:
Semenov [28]

Answer:

Step-by-step explanation:

Use a calculator with built-in statistical functions.  The function applying here is normcdf(, the "cumulative density function."  

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(c)  Find norm(126,162, 150,12);  0.819, or 81.9%

(d) Find norm(162, 174,150,12):  0.136, or 13.6%

8 0
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diamong [38]
The radius to this cylinder is 16.
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3 years ago
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