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kifflom [539]
3 years ago
14

7 times a number is 8 less than the square of that number. Find the negative solution.

Mathematics
1 answer:
charle [14.2K]3 years ago
7 0

Answer:

  -1

Step-by-step explanation:

The required relation is ...

  7n = n^2 -8

  0 = n^2 -7n -8 . . . . put in standard form

  0 = (n -8)(n +1) . . . . factor

Solutions are n=8 and n=-1.

The negative solution is -1.

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The square on the right is a scaled copy of the square on the left. Identify the scale factor. Express your answer in simplest f
musickatia [10]

Answer:

The scale factor is 1 to 1.3

Step-by-step explanation:

Here, we want to get the scale factor

To get the scale factor, we divide corresponding sides by each other

That, we have that

9/7 = 1.3

4 0
3 years ago
Simplify.<br> -5x^4(-3x^2+4x-2)
Amiraneli [1.4K]

Answer:

3x^6 - 4x^5 + 2x^4

Step-by-step explanation:

Given

-5x^4 ( -3x^2 + 4x - 2)

Step 1 : open the bracket with -5x^4

-5x^4 * -3x^2= 15x^6

Hint: - * - = +

x^4 * x ^2 = x^ 4+2 = x^6

-5x^4 * + 4x = - 20x^5

Hint: - * + = -

x^4 * x = x^4 + 1 = x^5

(x is always raise to the power of 1 but we don't write it or less it is greater than 1 e.g. 2 , 3 ,4, ..........)

-5x^4 * -2 = 10x^4

Hint: - *- = +

Let's combine the answers

15x^6 - 20x^5 + 10x^4

We can look for a factor that can go through as in that can divide all without a reminder

Factors of

15 - 3 * 5

1 * 15

20 - 4 *5

2 *10

1 * 20

10 - 2*5

1 * 10

Since the factor of 5 is common in all, so we are using 5 to divide through

15x^6 - 20x^5 + 10x^4

Using 5 to divide through

15x^6 / 5 - 20x^5 / 5 + 10x^4 / 5

= 3x^6 - 4x^5 + 2x^4

4 0
4 years ago
-5.8c +4.2 – 3.1 + 1.4c<br><br><br> Solve this for me
Rainbow [258]

Answer:

-4.4c+1.1

Step-by-step explanation:

4 0
3 years ago
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ELEN [110]

Answer:

x=-2

sorry i messed up coord val :/

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Q.6
Zina [86]

Answer:

Absolute increase : 2050

Relative increase : 63.08%.

Step-by-step explanation:

Absolute

The absolute increase is the subtraction of the population in 2011 by the population is 2006.

So 5300 - 3250 = 2050

Relative

The relative increase is the absolute increase divided by the initial population, that is, the population in 2006. Then you multiply by 100 to find the value as a percent

So 2050/3250 = 0.6308*100 = 63.08%.

8 0
3 years ago
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