MATHEMATICS MIDDLE SCHOOL

Which equation could be used to find the value of x in the triangle below?
15x
8x-2

Answers

Answer 1
Answer:

Answer:

use any angle which would give 360 as sum
Answer 2
Answer:

Answer:

you can use any angle to find x

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12% of 72 is what number ?

Helppppppppp me please :(

Answers

Answer:

12.57cm

Step-by-step explanation:

circumference =2^r

=2×22/7×2

=12.57cm

7y^2+18y+22=6y^2+34y-41

Answers

Solve for y over the real numbers:

7 y^2 + 18 y + 22 = 6 y^2 + 34 y - 41

Subtract 6 y^2 + 34 y - 41 from both sides:

y^2 - 16 y + 63 = 0

The left hand side factors into a product with two terms:

(y - 9) (y - 7) = 0

Split into two equations:

y - 9 = 0 or y - 7 = 0

Add 9 to both sides:

y = 9 or y - 7 = 0

Add 7 to both sides:

Answer:  y = 9 or y = 7

14. The mode of the data set is 21. What number is missing?21, 17, _, 25, 23, 13




19. The mean of the data set is 18. What number is missing?


21, 11, _, 27, 22, 13, 16




20. The median of the data set is 81. What number is missing?


82, 87, _, 77, 70, 80, 88

Answers

14. The missing number would be 21, which makes the 21 the mode.

19. The missing number of the data set with a mean of 18 is: 16.

20. The missing number would be 81, which is the median.

What is the Mode, Mean, and Median of a Data?

The mode is the data point that appears the most in a data set.

The median is the middle value or average of the middles values in a an ordered data set.

The mean is the average value of the data set.

14. The missing number would be 21, which makes the 21 the mode.

19. Mean = (21 + 11 + x + 27 + 22 + 13 + 16)/7 = 18

110 + x/7 = 18

110 + x = (18)(7)

110 + x = 126

x = 126 - 110

x = 16

Therefore, the missing number of the data set with a mean of 18 is: 16.

20. Let the missing number be x, then order the data set:

70, 77, 80, x, 82, 87, 88

The missing number would be 81, which is the median.

Learn more about the Mode, Mean, and Median of a Data on:

brainly.com/question/542771
14. The mode is the number in a data set that happens most frequently. Since we have a 21 and the mode is 21 then the missing number has to be 21.

19. The mean is the average of all the data in the set. That means...

(X+21+11+27+22+13+16)÷7= 18

X + 110/7 = 18
X + 110 = 126
X = 16

The missing number is 16

20. The median is the central number in a data set. Put the numbers in order...

70, 77, 80, __, 82, 87, 88

It tells us that 81 is the median, so that has to be the missing number because it fits as the central number (the middle number in the data set). There are 3 numbers before it and after it.

Missing number is 81

Why does it take 3 copies of 1/6 to show the same amount as 1 copy of 1/2

Answers

Common question that is always asked : "Why does it take 3 copies of 1/6 to show the same amount as 1 copy of 1/2".Well let me show you how it works.=> 3 of 1/6 to makw 1/2First, i'll show you the 3 copies of 1/6 added together=> 1/6 + 1/6 + 1/6 = 3/6, since they already have the same denominator, we directly added it.=> now, notice that 3/6 can be divided with or simplified=> 3/6 divided by 3 = 1/2Hence, that's how it becomes 1/2

Find the midpoint of the line segment whose endpoint are (2.6,5.1) and (3,4.7)

Answers

A(2.5, 5.1), B(3, 4.7)

M((2.5+3)/(2), (5.1+4.7)/(2))

M((5.5)/(2), (9.8)/(2))

\boxed{M(2.75, 4.9)}

Why do whole numbers with an exponent get bigger while fractions with an exponent get smaller.

Answers


Raising a whole number to a power means: 

             Take (a number of things) a number of times, and then possibly
             take that big number of things a number of times again.

Raising a fraction to an exponent means: 

             Take a piece of (a piece of one thing), and then possibly
              take just a piece of that smaller piece.
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