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Nutka1998 [239]
3 years ago
10

The sum of -4 and 8 times a number is multiplied by 3. The result is 15 less that 25 times the number. What is the number?

Mathematics
1 answer:
mash [69]3 years ago
4 0
3(-4 + 8x) = 25x - 15
-12 + 24x = 25x - 15
25x - 24x = -12 + 15
 x = 3

answer is
<span>D) 3</span>
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If you were to solve the following system by substitution, what would be the best variable to solve for and from what equation?
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X in the first equation

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7 0
3 years ago
Check-Ins 2 NC Math 1
fomenos

The maximum amount of profit the carnival makes based on the number of tickets sold is 6.5 thousand of dollars,

<h3>How to determine the difference?</h3>

The function is given as:

f(x) = -0.5x^2 + 5x - 6

Differentiate the function

f'(x) = -x + 5

Set to 0

-x + 5 = 0

Make x the subject

x = 5

Substitute x = 5 in f(x)

f(5) = -0.5 * 5^2 + 5 * 5 - 6

f(5) = 6.5

The table is not given.

Hence, the maximum amount of profit the carnival makes based on the number of tickets sold is 6.5 thousand of dollars,

Read more about quadratic functions at:

brainly.com/question/18797214

5 0
2 years ago
A building is 3 ft from a 9-fence that surrounds the property. A worker wants to wash a window in the building 14 ft from the gr
kvv77 [185]
The height of the fence is irrelevant. The bottom of the ladder is 3+8 = 11 feet from the building. The window is 14ft above the ground:
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6 0
3 years ago
What is the value of x? Enter your answer in the box. x =
Bezzdna [24]

Answer:

32

Step-by-step explanation:

The shape in image is an equilateral triangle which means all of it's angles has equal measurements:

2x - 4 = 5y and that is equal to 60 degrees

2x - 4 = 60 add 4 to both sides

2x = 64 divide both sides by 2

x = 32

3 0
2 years ago
What is the sum of the angles 'a' and 'b' from the diagram below.
VikaD [51]

Answer:

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Step-by-step explanation:

a can be found with formula (n-2)×180/n, where n is number of sides

a= 135

b=90

3 0
3 years ago
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