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3 years ago

Which expression is equivalent to 3(m+ 2) − 4(2m− 9) HELP ASAP

Mathematics

1 answer:

QveST [7]3 years ago

8 0

3(m + 2) - 4(2m - 9)
= 3m + 6 - 8m + 36
= 3m - 8m + 6 + 36 (now, we will group like terms).
= -5m + 42.

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Find the mean, median, mode, and range for each of the following sets of numbers

Sidana [21]

Answer:

The mean - $45\dfrac{2}{7};$ the median - 35, the mode - 27, the range - 47.

Step-by-step explanation:

Arrange the set of data (31,74,27,58,65,27,35) in ascending order:

27, 27, 31, 35, 58, 65, 74.

The mean is the usual average, so add aal numbers and then divide by the number of numbers:

$\dfrac{27+27+31+35+58+65+74}{7}=\dfrac{317}{7}=45\dfrac{2}{7}.$

The median is the middle value. The middle value in the row 27, 27, 31, 35, 58, 65, 74 is 35.

The mode is the number that is repeated more often than any other, so 27 is the mode.

The largest value in the set is 74, and the smallest is 27, so the range is 74 – 27 = 47.

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3 years ago

PLEASE SHOW WORK!!<br><br> I WILL MARK YOU BRAINLIEST!! **ESPECIALLY IF YOU CAN EXPLAIN IT!

Svetradugi [14.3K]

Step-by-step explanation:

x^2=9/49

√x^2=√9/49

x=+or-3/7

4 0

3 years ago

_ is the repetition of the same pattern formed by congruent figures in math's

nikdorinn [45]

Answer:

regular tessellation

Step-by-step explanation:

A regular tessellation is a repeating pattern of congruent regular polygons on a plane with no gaps or overlaps.

Since a regular tessellation is with no gaps and overlaps, the only regular polygons that will tessellate are equilateral triangles, squares and regular hexagons. Therefore, there are only three types regular tessellations (ones made from squares, equilateral triangles and hexagons),

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3 years ago

has 4 glass ornaments: blue, orange, pink, and purple. How many ways can she hang them in a row so that the blue and pink orname

Tatiana [17]

There are 3 different ways she can hang them

7 0

4 years ago

Read 2 more answers

DONTBANSWERBIF DONT KNOW PLEASE solve this system by ELIMINATION. show all of your work

pochemuha

Answer:

x = -1 and y = -3

Step-by-step explanation:

The given equations are :

2x+3y= -11 ...(1)

8x -2y= -2 ...(2)

We need to solve the equations.

Multiply equation (1) by 4.

8x+12y= -44 ...(3)

Subtract equation (2) from (3).

8x+12y-(8x -2y) = -44-(-2)

8x+12y-8x +2y = -42

14y = -42

y = -3

Put the value of y in equation (2).

8x -2(-3)= -2

8x+6 = -2

8x = -8

x = -1

So, the values of x and y are -1 and -3 respectively.

6 0

3 years ago