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xenn [34]
3 years ago
8

Question 3(Multiple Choice Worth 5 points)

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
7 0

First Equation

STEP 1: Move the variable to the right side and change its sign

3x=8-y

STEP 2: Divide both sides of the equation by 3

x=8/3 - y/3

STEP 3: Write all numerators above the common denominator

x=8-y/3

THE FINAL ANSWER IS:

x=8-y/3

Second Equation

STEP 1: Move variable to the right side and change its sign

-x= -10+2y

STEP 2: Change the signs on both sides of the equation

x=10-2y

THE FINAL ANSWER IS:

x=10-2y

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Evaluate l-x-2yl for x = -2 and y = 3.
ELEN [110]

Step-by-step explanation:

|...| means absolute value of "...". that means always the "+" value of "...", even if it is negative.

in other words

|-x| = x

|x| = x

|-x - 2y| for x = -2 and y = 3

|- -2 - 2×3| = |2 - 6| = |-4| = 4

3 0
1 year ago
What is the perimeter of this rectangle?
givi [52]
The perimeter is defined as the sum of all the sides of any polygon.

A rectangle is a polygon with 4 sides and 2 pairs of parallel sides. Therefore, in order to find the perimeter of any rectangle, we can either add up all the sides given to you or use a formula which states that:

                                            P = 2L + 2W
Where,
L is the length of the rectangle and W is the width of a triangle.

For example:
A triangle with length = 5 cm and Width = 3 cm.
The Perimeter will be:
                                    P = 2×5 + 2×3
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3 0
3 years ago
Is 1/8 and 4/32 a proportion?
vladimir2022 [97]
Yes since 1/8 is equal to 4/32
6 0
2 years ago
Read 2 more answers
Find the mean and the MAD. [Note: Type your answers as decimal numbers, rounded to the nearest tenth.] 135, 160, 145, 155, 170,
VashaNatasha [74]

Answer:

Mean = 151

MAD = 9.14

Step-by-step explanation:

Given the data:

135, 160, 145, 155, 170, 150, 142

Mean = Σx / n

Mean = 1057 / 7

Mean = 151

Mean absolute DEVIATION (MAD) : Σ(x - μ) / n

[(135-151) + (160-151) + (145-151) + (155-151) + (170-151) + (150-151) + (142-151)] / 7

Mean absolute deviation = 9.14

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B19%7D%20%20%3D%206" id="TexFormula1" title=" \frac{x}{19} = 6" alt=" \fra
Alex17521 [72]

[ Answer ]

\boxed{X \ = \ 114}

[ Explanation ]

\frac{x}{19} = 6

Multiply Both Sides By 19

\frac{x}{19} = 6 · 19

Simplify:

X = 114

Check Your Work:

\frac{114}{19}

Simplify:

= 6

\boxed{[ \ Eclipsed \ ]}

5 0
2 years ago
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