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Virty [35]
3 years ago
14

What is X

3x + 12 = 21" align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
Paraphin [41]3 years ago
8 0
You would move all terms that don’t contain x to the right side and solve. Answer : x= -3
grigory [225]3 years ago
7 0
-3x =21 -12
-3x =9
x =9/-3
x =(-3)
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: 2/18 of the students in Mr. P’s classroom had blonde hair. If there were 36 students in his class, how many students did not h
sesenic [268]
4 did not have blonde hair
7 0
3 years ago
The price of an item costs $13 to make. It is marked up $6.50 to sell. What is the percent marked-up
Whitepunk [10]

(1 + x) (13) = 13+6.5

13x + 13 = 19.5

13x = 6.5

x = 0.5

The item was marked up by 50%

4 0
3 years ago
Find the critical numbers of the function f(x) = x6(x − 1)5 what does the first derivative test tell you that the second derivat
patriot [66]
The given function is f(x) = x⁶(x-1)⁵

The first derivative is
f'(x) = 6x⁵(x-1)⁵ + 5x⁶(x-1)⁴
       = x⁵(x-1)⁴(6x - 6 + 5x)
       = x⁵(x-1)⁴(11x - 6)
The critical values are the zeros of f'(x). They are
x = 0, 6/11, and 1.
The critical values indicate that turning points exist for f(x) at the critical points. However, we do not know the nature of the turning points.

Write the first derivative in the form f'(x) = (x-1)⁴(11x⁶ - 6x⁵).
The second derivative is
f''(x) = 4(x-1)³(11x⁶ - 6x⁵) + (x-1)⁴(66x⁵ - 30x⁴)
        = (x-1)³(44x⁶ - 24x⁵ + 66x⁶ - 30x⁵ - 66x⁵ + 30x⁴)
        = (x-1)³(110x⁶ - 120x⁵ + 30x⁴)
        = 10x⁴(x-1)³(11x² - 12x + 3)
The sign of f''(x) at the critical values tell us the nature of the turning point.

f''(0) = 0, therefore a point of inflection exists at x = 0.
f''(6/11) > 0, therefore a local minumum exists at x = 6/11.
f''(1) = 0, therefore a point of inflection exists at x=1.

The graphs shown below confirm these results.

8 0
3 years ago
Yvonne sells Nine West shoes. She earns 4% commission on all her sales. Yesterday she sold
Fynjy0 [20]

Answer:

$60

Step-by-step explanation:

4/100= 0.04

$1500 x 0.04 = 60

4 0
2 years ago
6. The complement of an angle is 5 less than four times the angle. Find the measure of the angle.
Korvikt [17]

The first angle is 76 and the second angle is 14. You can check this by doing 14+5=19 and then multiply that by 4.

7 0
3 years ago
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