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3 years ago

Find the sum or difference of -12 1/2 + 4 1/2

Mathematics

1 answer:

dexar [7]3 years ago

5 0

Step-by-step explanation:

sum:

$- 12 \frac{1}{2} + 4 \frac{1}{2} = - 8$

difference:

$- 12 \frac{1}{2} - 4 \frac{1}{2} = - 17$

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Midpoint of the segment between the points (−5,13) and (6,4)

Leokris [45]

Answer: $(0.5,8.5)$

Step-by-step explanation:

We need to use the following formula to find the Midpoint "M":

$M=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Given the points (-5,13) and (6,4) can identify that:

$x_1=-5\\x_2=6\\\\y_1=13\\y_2=4$

The final step is to substitute values into the formula.

Therefore, the midpoint of the segment between the points (-5,13) and (6,4) is:

$M=(\frac{-5+6}{2},\frac{13+4}{2})\\\\M=(\frac{1}{2},\frac{17}{2})\\\\M=(0.5,8.5)$

6 0

3 years ago

Read 2 more answers

Choices; a) 21.8° b) 35.2° c) 45.1°

kifflom [539]

Answer:

$\displaystyle a) \: {x}^{ \circ} = 21.8 ^{ \circ}$

Step-by-step explanation:

we are given opposite and adjacent

we want to figure out x°

remember that,

$\displaystyle \: \tan( \theta) = \frac{opp}{adj}$

where our opp is 5 and adj is 12.5

let $\theta$ be x°

$\displaystyle \: \tan( {x}^{ \circ} ) = \frac{5}{12.5}$

$\displaystyle \: {x}^{ \circ} = \arctan \left( \frac{5}{12.5} \right)$

by using calculator

$\displaystyle \: {x}^{ \circ} = 21.8$

hence,

our answer is a

6 0

3 years ago

Jenny’s mom is 36 years old. If Jenny’s great grandmother is 90 years old, what percent of Jenny’s mother’s age is Jenny’s great

Effectus [21]

Answer:

13.1

Step-by-step explanation:

12/90=x/100%

cross multiply

1200%=90x

13 1/3%=x

8 0

3 years ago

Determine if triangle DEF with coordinates D (3, 2), E (4, 6), and F (7, 3) is an equilateral triangle. Use evidence to support

Anna [14]

Use the formula d=sqrt[(x₂-x₁)^2+(y₂-y₁)^2] to find distance between 2 points.
DE = √17
EF = √18
FD = √17
See the attachment for the complete workout.
Since,All the sides are not same to make an equilateral triangle.
So its not an equilateral triangle

6 0

3 years ago

Jonah is mowing lawns for a summer job. For every mowing job, he charges an

dem82 [27]

Answer:

$2.00

Step-by-step explanation:

8 times 6= 56

58 - 56= 2

5 0

3 years ago

Find the sum or difference of -12 1/2 + 4 1/2​

Find the sum or difference of -12 1/2 + 4 1/2