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3 years ago

Which expression is a factor x^2-5x-6

Mathematics

1 answer:

trapecia [35]3 years ago

7 0

Answer:

x^2 - 5x - 6 = (x - 2)(x - 3).

Step-by-step explanation:

f(x) = x^2 - 5x - 6

We need 2 numbers whose product is - 6 and whose sum is -5. They are -3 and -2:

The factors are x- 2 and x - 3.

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Express 78 billion in scientific notation

ryzh [129]

Answer:

$7.8 * 10^{10}$ is scientific notation of 78 billion

Step-by-step explanation:

For scientific notation , follow the following notation:

$a * 10^{b}$ -------->(equation 1)

Let, $a^{'} = 78 billion$

$a^{'} = 78000000000$

$a^{'} = 78000000000.0$

In standard form

$a = 7.8000000000$

$a = 7.8$

As decimal point move 10 places from right to left, therefore

b = 10

Put the value of 'a' and 'b' in (equation 1)

$7.8 * 10^{10}$ is scientific notation of 78 billion

6 0

3 years ago

Please please help me

Anarel [89]

so you are going to use the Pythagorean theorem on the smaller triangle to find the connecting side's length

${5}^{2} = {3}^{2} ( {b}^{2} ) \\ b = 4$

now you can find the bigger triangle's hypotenuse

${6}^{2} + {4}^{2} = {c}^{2} \\$

c=4

8 0

2 years ago

Which of the following is a solution of 4x2 = − 9x − 4?

mestny [16]

The solution is -0.609611 and -1.64, I do not think you can simply find this by factoring but the only way is graphing it

8 0

3 years ago

Read 2 more answers

Can someone help me ? i need to get done ASAP

Inga [223]

Answer:

Alright well the exact form to this question is

Exact form: 27/49 Well hope this helps have a nice day :)

Step-by-step explanation:

7 0

3 years ago

What one half multiplied by 4/5

MrRa [10]

Answer:

2/5

Step-by-step explanation:

1. 1/2 * 4/5

2. 4/10

3. reduce/divide the fraction by 2

4. you get 2/5

7 0

3 years ago