3 years ago

Which value should be added to this data set to produce a mean of 13?

Mathematics

2 answers:

kirill [66]3 years ago

8 0

Answer:

Step-by-step explanation:

Svetradugi [14.3K]3 years ago

7 0

Answer:

Step-by-step explanation:

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Area of the living room is 180 square feet and the perimeter is 54 feet. What are the dimensions in feet?

dolphi86 [110]

Answer.....15ft by 12ft

Explanation:

Area = Length × Width

180 = LW....make W the subject of formula

;W = 180/L

Perimeter = 2L + 2W

54 = 2L + 2(180/L)...sub W with the formula above...

then simplify the equation and obtain...

2L^2 - 27L + 180 = 0....then solve using the quadratic formula....then obtain..

;L = 15ft....after obtaining L = 15...then substitute into the W = 180/L equation...

where W = 180/15 = 12ft

there you have...Length = 15ft and Width = 12ft

5 0

3 years ago

What’s the area of the rectangle in terms of x if the length is (x+8) and the width is (2x-1)?

WARRIOR [948]

Answer:

Step-by-step explanation:

$A=LW\\ \\ A=(x+8)(2x-1)\\ \\ A=2x^2-x+16x-8\\ \\ A=2x^2+15x-8$

5 0

2 years ago

Solve and graph the following inequality: 3(7x+17) > -19 + 14x

love history [14]

Answer:

Solving the inequality we get: $\mathbf{x>-7}$

Step-by-step explanation:

We need to solve and graph the inequality $3(7x+17) > -19 + 14x$

Solving:

$3(7x+17) > -19 + 14x$

Step 1: Multiply 3 with terms inside the bracket

$21x+51 > -19 + 14x$

Step 2:Subtracting 51 on both sides

$21x+51-51 > -19 + 14x-51\\21x>14x-70\\$

Step 3: Subtract 14x on both sides

$21x-14x>+14x-70-14x\\7x>-70$

Step 4: Divide both sides by 7

$\frac{7x}{7}>\frac{-70}{7}\\x>-10$

Solving the inequality we get: $\mathbf{x>-7}$

The graph is attached in the figure below.

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3 years ago

For g(x) = 1/3x – 2, find the value of x for which g(x) = -4

kirill [66]

Answer is attached ! Hope it helps

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2 years ago

To solve a right triangle means to find the measures of all its and

maria [59]

Angles and sides
meaning the length of the sides of the triangle and all the angles <span />

5 0

3 years ago