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elena55 [62]
2 years ago
13

I REALLY NEED HELP PLEASE

Mathematics
1 answer:
vaieri [72.5K]2 years ago
8 0

Answer:

sin X =  12/13

cos X = 5/13

tan X = 12/5

Step-by-step explanation:

Recall the definitions as follows:

For a right triangle (i.e one angle is 90 deg) with one of the angles X

sin X = opposite side / hypotenuse

cos X = adjacent side / hypotenuse

tan X = opposite side / adjacent side

In our case for angle A, the following applies:

opposite = 36

adjacent = 15

hypotenuse = 39

hence

sin X = opposite side / hypotenuse = 36/39 = 12/13

cos X = adjacent side / hypotenuse = 15/39 = 5/13

tan X = opposite side / adjacent side = 36 /15 = 12/5

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3.
Zanzabum

Answer:

see below

Step-by-step explanation:

y = 8x − 9

y = 4x − 1

Since both equations are equal to y, we can set them equal to each other

8x-9 = 4x-1

Subtract 4x from each side

8x-4x-9 = 4x-4x-1

4x-9 = -1

Add 9 to each side

4x-9+9 = -1+9

4x = 8

Divide each side by 4

4x/4 = 8/4

x=2

Now find y

y = 4x-1

y = 4(2)-1

y = 8-1

y = 7

(2,7)

The point of intersection when the 2 lines are graphed is (2,7)

7 0
3 years ago
Read 2 more answers
A class of 25 students took a spelling test. Two students scored 100 on each test, nine students scored 95 on each test, ten stu
lawyer [7]
The average score is 90.6
5 0
3 years ago
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What number is it that, when multiplied by 18,27,36,45,54,63,72,81, or 99, gives a product in which the first and last figures a
allsm [11]

The given multipliers are factors of 9, the possible number will have 1 as first and last digit which gives the number as 101

<h3>How can the correct number be found?</h3>

The given numbers are;

18, 27, 36, 45, 54, 63, 72, 81, 99

Given that the first and the last figures are those of the multipliers, we have;

The first and last and last digit of the number can be 1, which gives;

Possible numbers includes; 11 and 101

By trying the possible numbers, the difference found is presented as follows;

99 × 11 = 1089 (The first and the last digit are not the same as the multiplier)

  • 99 × 101 = 9999 (First and last digit are not the same as the multiplier)

90 × 11 = 990

90 × 101 = 9090

The correct option is therefore 101

  • The number is 101

Learn more about multiplication of numbers here:

brainly.com/question/83239

#SPJ1

6 0
2 years ago
Write the converse of this statement.
vichka [17]
If they are not equal, then the 2's supplementary
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3 years ago
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Kay walks upstairs to make her legs stronger. Every day at work, she walks up 9 flights of stairs. If there are 13 steps in 1 fl
andrezito [222]

Answer: See explanation

Step-by-step explanation:

Every day at work, Kay walks up 9 flights of stairs. If there are 13 steps in 1 flight of stairs, how many steps does Kay climb in 5 days at work?

The number of steps she walks in a day will be:

= 13 steps × 9

= 117 steps

Number from steps in 5 days will be:

= 117 steps × 5

= 585 steps

If you sleep 7 hours every night how many hours are you AWAKE in a year?

The number for hours awake in a day will be:

= 24 hours - 7 hours

= 17 hours

The number for hours awake in a year will then be:

= 17 hours × 365

= 6205 hours

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3 years ago
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