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Bumek [7]
3 years ago
8

Please Help, Geometry find exact value of missing sides

Mathematics
1 answer:
zzz [600]3 years ago
3 0

Answer:

answer  bottom is 90

Step-by-step explanation:

i helps

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Find 50% of 36:<br> Find 25% of 36:<br> Find 75% of 36:
HACTEHA [7]

Answer:

18, 9, 27

Step-by-step explanation:

36 ÷ 2 = 18. Dividing by 2 is the same as multiplying by 50%.

36 ÷ 4 = 9. Dividing by 4 is the same as multiplying by 25%.

Since 25% • 3 = 75%, you can do 9 (from previous) • 3 to get 27.

5 0
3 years ago
Some of the students three scores is 231. If the first is 20 points more than the second, and the sum of the first two is 6 more
Aleks [24]

Answer:

The first score is 109

Step-by-step explanation:

I am assuming that in the first sentence of the question, you meant:

Sum of the students three scores is 231...

First, let the scores of the first second and third student be a, b and c respectively. We are told that:

a + b + c = 231 . . . . . . . .(1)         (sum of students three scores is 231)

a = b + 20 . . . . . . . . . . . (2)        (the first is 20 points more than the second)

a + b = 6c . . . . . . . . . . . .(3)        (sum of the first two is 6 more times the third)

required, find a.

substituting the value of (a + b) in equation (3) into equation (1), we will have the following:

since a + b = 6c . . . (3)

a + b + c = 231 . . . . . (1), becomes,

(a + b) + c = 231

(6c)  + c = 231

7c = 231 (divide both sides by 7)

c = 231 ÷ 7 = 33

∴ c = 33

Next, from equation (2), we know that a = b + 20; this can also be written as:

a - 20 = b

∴ b = a - 20 . . . . . . . (4)

Finally, putting the value of b in equation (4) and the value of c calculated above into equation 1, ( a + b + c = 231), we have the following:

a + (a - 20) + 33 = 231

(a + a) - 20 + 33 = 231

2a + 13 = 231

2a = 231 - 13 = 218

a = 218 ÷ 2 = 109

∴ a = 109

we can also calculate for 'b' by substituting for the value of 'a' in equation 4

b = a - 20 = 109 - 20 = 89.

and to test if the values of a, b and c are correct:

a + b + c = 231

109 + 89 + 33 = 231

4 0
3 years ago
Abeer bought a desk on sale for $363. This price was 34% less than the original price.
dezoksy [38]

Answer:

239.58

Step-by-step explanation:

363*0.34=123.42

363-123.42=239.58

7 0
2 years ago
Read 2 more answers
For addition, drag tiles onto the board. to form a group, place one tile on top of another. what is the sum of -2 and -7?
musickatia [10]

The sum of -2 and -7 is given as follows :

-2 + (-7)

In mathematical operations, + * - is - therefore

Now soo we have,

-2 – 7

This gives us: -9

Learn more about addition at : brainly.com/question/20691960

#SPJ4

Disclaimer : The complete question is given below.

Question :

For addition, drag tiles onto the board.

To form a group, place one tile on top of another.

What is the sum of -2 and -7?

Board sum: 0

Reset

5 0
2 years ago
Element X decays radioactively with a half life of 6 minutes. If there are 790 grams of Element X, how long, to the nearest tent
REY [17]

Answer:

Step-by-step explanation:idk

4 0
3 years ago
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