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natima [27]
4 years ago
8

Which of the following shows the factors of 2y^2 - 2y - 4? Select one of the options below as your answer: A. (2y - 4)(y - 1) B.

(2y - 4)(y + 1) C. (2y - 2)(y - 2) D. (2y - 2)(y + 2)
Mathematics
2 answers:
Mumz [18]4 years ago
7 0
Yes, B.) is correct
yulyashka [42]4 years ago
6 0
If you multiply out the answers, which is easier, then you can find the correct answer.

The factors need to multiply together to create the original problem, so it's just a matter of plug and chug.

The answer is B.
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A probability experiment will consist of selecting one student at random from your math class. Is the probability that the selec
kumpel [21]
Not likely because in my class we have more boys then girls 
m=27
f=5
8 0
3 years ago
Why is the value of q?
Rudiy27

Given:

QSR is a right triangle.

QT = 10

TR = 4

To find:

The value of q.

Solution:

Hypotenuse of QSR = QT + TR

                                 = 10 + 4

                                 = 14

Geometric mean of similar right triangle formula:

$\frac{\text { hypotenuse }}{\text { leg }}=\frac{\text { leg }}{\text { part }}$

$\Rightarrow \frac{14}{q} =\frac{q}{4}

Do cross multiplication.

$\Rightarrow14\times 4 =q\times q

$\Rightarrow 56 =q^2

Switch the sides.

$\Rightarrow q^2 =56

Taking square root on both sides.

\Rightarrow q =2 \sqrt{14}

The value of q is 2 \sqrt{14}.

8 0
3 years ago
In most places, it is only possible to see 2,000 stars in the nighttime sky due to light pollution. This is 4/15 as many stars a
emmainna [20.7K]

Let the no. of stars one can expect to see at Bryce Canyon be x.

Given that : No. of stars visible in the night sky = 2000

Also, given that, it is 4/15 of x.

Now, we have

\frac{4}{15}x = 2000\\\\x= \frac{2000 * 15}{4} = 7500

∴  You can expect to see 7,500 stars at Bryce Canyon.

5 0
3 years ago
£72 shared in the ratio of 2:7
Goryan [66]
To do that we have to add 2+7=9
Next step is to divide 72 by 9
72:9=8 - its how many pounds its in"1"
Finally we can multiply 
2*8=16
7*8=56 - its the answer
8 0
3 years ago
Evaluate C= 2 xr, for r=8.<br> C= 100<br> OC= 16<br> OC= 287<br> C= 16
____ [38]
C= 2 x r where r = 8
C = 2 x 8
C = 16.
Hope I helped:)
3 0
3 years ago
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