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Murrr4er [49]
3 years ago
14

What is the factored form of x2 - 4x - 5?

Mathematics
2 answers:
Kazeer [188]3 years ago
6 0

Answer:

Option D, (x - 5)(x + 1)

Step-by-step explanation:

<u>Step 1:  Factor </u>

x^2 - 4x - 5

x^2 - 5x + x - 5

(x - 5)(x + 1)

Answer:  Option D, (x - 5)(x + 1)

Vlad [161]3 years ago
6 0

Answer:

(x-5) (x+1)

Step-by-step explanation:

x^2 -4x -5

What two numbers multiply to -5 and add to -4

-5*1 = -5

-5+1 = -4

(x-5) (x+1)

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Write a rational equation that relates the desired percentage to the amount of % acid solution that needs to be added to liter o
mart [117]

This question is incomplete

Complete Question

Write a rational equation that relates the desired percentage p, to the amount A of a 30% solution that needs to be added to 1 liter of 10% acid solution to make a blend that is p% acid, where 0<p<100 . What is a reasonable restriction on the set of possible values of ? Explain your answer.

Answer:

100(0.1 + 0.3A)= (1 + A) P

Step-by-step explanation:

A of a 30% solution that needs to be added to 1 liter of 10% acid solution to make a blend that is p% acid,

Hence,

10% of 1 + 30% of A = p%(1 + A)

0.10 + 0.3A = (p/100)(1 + A)

Divide both sides by 1 + A

0.1 + 0.3A/ 1 + A = p/100

Cross Multiply

100(0.1 + 0.3A) = 1 + A(p)

From the above calculation, we can see that, the blend that would be formed is not lower than 10% or greater than 30%

10% < p< 30%

8 0
2 years ago
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BlackZzzverrR [31]

Answer:

3rd one

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
How to convert 5 1/4 into a decimal
Katen [24]
5 1/4 as a decimal is 5.25

this is because 1/4 is equal to 25/100
5 0
3 years ago
How do u graph 4x-3&lt;9
Olegator [25]

Solve for x:


4x-3 < 9\ \ \ \ |+3\\\\4x < 12\ \ \ \ |:4\\\\x < 3


Look at the picture.

3 0
3 years ago
3. One weekend, 152 peopleattended an art exhibit. Thefollowing weekend, 298 peopleattended. To the nearest percent,what was the
castortr0y [4]

We can calculate the percent change dividing the change by the original amount of people attending the exhibit.

The increase is 298-152 = 146.

Then, we can calculate the percent change as:

\frac{298-152}{152}=\frac{146}{152}=0.9605=96\%

There was a 96% increase in the number of people attending the exhibit.

7 0
1 year ago
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