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2 years ago

-2(x-0.5+1) i have this question and i really really really need help in solving it so...yeah!

Mathematics

1 answer:

alina1380 [7]2 years ago

7 0

Answer:

Step-by-step explanation:

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A theater holds 2680 seats. The lower level has 100 less than 2 times as many seats as the upper level. The middle level has 80

Karolina [17]

2680=2x-100+80+3x
2680+20=5x
2700=5x
x=540

4 0

3 years ago

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If f(x) = 3x + 10x and g(x) = 4x - 2, find (f - g)(x).

Anika [276]

Answer:

$(f-g)(x)=9x+2$

Step-by-step explanation:

The function $(f-g)(x)$ means subtract the expression of g function from the expression of f function.

So we have: (3x+10x) - (4x - 2) = (13x) - (4x -2) = 13x -4x +2 = 9x+2

Hence $(f-g)(x)=9x+2$

3 0

3 years ago

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Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard

larisa86 [58]

The range, variance and standard deviation of the is :

Range = 31.2
Variance = 152.978
Standard deviation = 12.368

Given the data :

39 37 35 27 19 16 13 9 8.6 7.8

Arranging in ascending order :

7.8, 8.6, 9, 13, 16, 19, 27, 35, 37, 39

Range = maximum - minimum values

Maximum value = 39

Minimum value = 7.8

Range = 39 - 7.8 = 31.2

The variance :

The variance : Σ(X - m)² / (n - 1)

m = mean

n = number of items

m = ΣX/ n = 211.4 / 10 = 21.4

Variance = [(39-21.14)^2 + (37-21.14)^2 + (35-21.14)^2 + (27-21.14)^2 + (19-21.14)^2 + (16-21.14)^2 + (13-21.14)^2 + (9-21.14)^2 + (8.6-21.14)^2 + (7.8-21.14)^2] / (10-1)

Variance = 1376.804 / 9

Variance = 152.978

Standard deviation = √variance

Standard deviation = √152.978

Standard deviation = 12.368

Learn more : brainly.com/question/15528814

8 0

3 years ago

If you spent $6.30 on seven pieces of candy. How much was each piece of candy???

VMariaS [17]

Answer:

6.3/7 or $0.90

Step-by-step explanation:

6.30 = 7

6.3/7 = 1

0.9

Hope this helps!

6 0

3 years ago

Solve algebraically and graphically 6/x+8/x+5=3

Readme [11.4K]

Answer:

$\Large \boxed{x=-7}$

Step-by-step explanation:

$6/x+8/x+5=3$

Subtracting 5 from both sides.

$6/x+8/x=-2$

Adding fractions since denominators are equal.

$14/x=-2$

Multiplying x on both sides.

$14=-2x$

Dividing both sides by -2.

$-7=x$

5 0

4 years ago

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