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Zepler [3.9K]
4 years ago
10

Find the measures of two complementary angles if the difference in the measures of the two angles is 12.

Mathematics
1 answer:
Solnce55 [7]4 years ago
5 0

Answer: 51 degrees and 39 degrees

Step-by-step explanation:

x - (90 - x) = 12

2x - 90 = 12

2x = 102

x = 102/2 = 51

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In an effort to determine the most effective way to teach safety principles to a group of employees, four different methods were
musickatia [10]

Answer:

critical value = 5.29

Step-by-step explanation:

Given that they are divided into 4 groups and a sample of 5 test was selected

N = 5 * 4 = 20

k = 4

∝ = 0.01

Df for numerator ( SS group )= k - 1 = 3

Df for denominator ( SSE group )  = N - k = 20 - 4 = 16

DF ( degree of freedom )

Next we will use the F table to determine the critical value

Critical value =   F_{16,3,0.01} = 5.29

5 0
3 years ago
A canoe in still water travels at a rate of 12 miles per hour. The current today is traveling at a rate of 2 miles per hour. If
VARVARA [1.3K]

Answer:

It’s 60miles

Step-by-step explanation:

We assume the trip is "d" miles and that the "extra hour" refers to the additional time that a current of 2 mph would add. That is, we assume the reference time is for a current of 0 mph.

The time with no current is ...

 time1 = distance/speed

 time1 = d/12 . . . . hours

With a current of 2 mph in the opposite direction, the time is ...

 time2 = d/(12 -2) = d/10

The second time is 1 hour longer than the first, so we have ...

 time2 = 1 + time1

 d/10 = 1 + d/12

 6d = 60 + 5d . . . . multiply by 60

 d = 60 . . . . . . . . . subtract 5d

The one-way distance is 60 miles.

7 0
3 years ago
Is (4,9) a solution to the equation 3(x+2) = y ?
Mrac [35]

Answer:

(4, 9) is not a solution to 3(x + 2) = y.

Step-by-step explanation:

3(x + 2) = y

Substitute (4, 9) into the equation.

3(4 + 2) = 9

Add the inside of the parenthesis.

3(6) = 9

Multiply.

18 ≠ 9

8 0
3 years ago
Read 2 more answers
HELP NEEDED ASAP <br> answer this question for me, image below
maks197457 [2]

Answer: Heyaa! ~

Your Answer Is... 13

Step-by-step explanation:

  • 385 divided by 28 = 13. 75
  • Reduce the expression, if possible, by cancelling the common factors.

Hopefully this helps you! ~

6 0
2 years ago
You draw one card from a standard 52-card deck. In how many ways could the card be face card or a six?
Nady [450]
16/25 because there are 3 face cards which have 4 different suits and 4 different suits for the number 6
8 0
4 years ago
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