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3 years ago

PLEASE HELP! I WILL MARK YOU BRAINIEST

Mathematics

1 answer:

poizon [28]3 years ago

7 0

Answer:

a=2.4

Step-by-step explanation:

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Gas prices went up this week from $4.00 a gallon to $4.20. what is the percent increase of the price?

lutik1710 [3]

4.20 divided by 4.00= 1.05
turn decimal into percentage by times 100
1.05 times 100= 105%

7 0

3 years ago

Which number is not equal to one of the following expressions? 1,400 x 10

pochemuha

The answer is 140

Explanation:
1,400 x 10= 14,000
140,000\100=1,400
1,400 x 100= 140,000

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2 years ago

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE

Viktor [21]

Answer:

Step-by-step explanation:

Given the function f(x) = 8x³ − 12x² − 48x, <em>the critical point of the function occurs at its turning point i,e at f'(x) = 0</em>

First we have to differentiate the function as shown;

$f'(x)= 3(8)x^{3-1}- 2(12)x^{2-1} - 48x^{1-1}\\ \\f'(x) = 24x^2 - 24x-48x^0\\\\f'(x) = 24x^2 - 24x-48\\\\At \ the\turning\ point\ f'(x)= 0\\24x^2 - 24x-48 = 0\\\\\\$

$Dividing \ through \ by \ 24\\\\x^2-x-2 = 0\\\\On \ factorizing\\\\x^2-2x+x-2 = 0\\\\x(x-2)+1(x-2) = 0\\\\(x-2)(x+1) = 0\\\\x-2 = 0 \ and \ x+1 = 0\\\\x = 2 \ and \ -1$

Hence the critical numbers of the function are (2, -1)

8 0

3 years ago

What value of x makes this equation true?

Flauer [41]

Answer:

Step-by-step explanation:

27/3-3=6 and 27/9+3=6

so both sides are equal to each other which makes the equation true.

7 0

3 years ago

Y’all what’s this I’m so confused help

Snowcat [4.5K]

Answer:

x = 66

Step-by-step explanation:

√(x - 2) + 3 = 11

Subtract 3 from both sides: √(x - 2) = 8

Square both sides: x - 2 = 64

Add 2 to both sides: x = 66

8 0

2 years ago