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3 years ago

Solve using square root or factoring method

Mathematics

1 answer:

OlgaM077 [116]3 years ago

8 0

9x^2 + 18x + 9 = 5

9(x^2 + 2x +1) - 5 = 0

x^2 + 2x - 4 = 0

Then use the quadratic formula.

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Help down below, these are my last questions I need help on and I need it done urgently.

love history [14]

Answer:

6) 2/3

7) 1/2

8) 5/8

9) 3/4

10) 1

11) 1

12) 7/12

Hope this helps :^)

Step-by-step explanation:

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2 years ago

What is the equation of the function shown in the graph?

Zanzabum

Answer:

Step-by-step explanation:

I do not now what you mean?

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3 years ago

A medical researcher needs 37 people to test the effectiveness of an experimental drug. If 101 people have volunteered for the t

Rashid [163]

Answer:

The number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

Step-by-step explanation:

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

${n\choose k}=\frac{n!}{k!\cdot (n-k)!}$

Compute the number of ways to select 37 people from 101 as follows:

${101\choose 37}=\frac{101!}{37!\cdot (101-37)!}$

$=\frac{101!}{37!\times 64!}\\\\=\frac{101\times 100\times 99\times....64!}{37!\times 64!}\\\\=5397234129638871133346507775$

Thus, the number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

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2 years ago

What is the solution of the equation 70 = 1.4y ?

sdas [7]

So you basically have to divide 1.4 on both sides so you can get y by its self. Once you divide 60 by 1.4 you’ll get 50.

y=50

7 0

2 years ago

Factoring: 3x^5+6x^3

MissTica

Answer:

Step-by-step explanation:

3x^5+6x^3

=3x^3(x^2+2)

7 0

3 years ago

Read 2 more answers