9 = c(c - 8)
9 = c² - 8c
c² - 8c - 9 = 0
c² + c - 9c - 9 = 0
c(c + 1) -9 (c + 1) = 0
(c+1)(c-9) = 0
c = -1 or 9

In short, Your Answers would be -1 and 9

Hope this helps!

8 0

4 years ago

Question 3

german

Part A :

D = (1/4) * C D = 1/4 * 24 D = 24/4 = 6 ft above sea level

Part B :

Your answer is positive because D is still above sea level...if it would have been below sea level, then it would have been negative

8 0

3 years ago

Sharifah earned $61,000 last year. If the first $34,000 is taxed at 11% and income above that is taxed at 17%, how much does Sha

Marina CMI [18]

Using proportions, it is found that Sharifah owns $8,330 in taxes.

<h3>What is a proportion?</h3>

A proportion is a <u>fraction of total amount</u>, and the measures are related using a rule of three.

Hence, using proportions, a percentage x% of an amount a is given by: $\frac{x}{100} \times a$ .

<h3>Taxes for the first $34,000:</h3>

Rate of 11%, hence:

$T_1 = 0.11(34000) = 3740$

<h3>Taxes for the amount above $34,000:</h3>

The amount taxed is $27,000, as 61000 - 34000 = 27000.

Rate of 17%, hence:

$T_2 = 0.17(27000) = 4590$

Then, the total amount is:

$T = T_1 + T_2 = 3740 + 4590 = 8330$

Sharifah owns $8,330 in taxes.

You can learn more about proportions at brainly.com/question/24372153

8 0

3 years ago