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Amanda [17]
3 years ago
12

Can somebody help me with these, i will mark you brainliest :)

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
6 0

Answer:

11 is b

Step-by-step explanation:

thats all i can do sorry

Harlamova29_29 [7]3 years ago
5 0

Answer:

1). sin 30°=5/x

1/2=5/x

x=10

2)sin 30°=y/18

1/2=y/18

y=9°

cos 30°=x/18

√3/2=x/18

x=9√3

3) option D is correct

because cosine ratio is base / hypotenuse.

4) option c is correct.

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In square ABCD, diagonals AC and DB intersect at point E, m∠EBC=(3x+9y)°, and m∠EAB=(5x+5y)°.
telo118 [61]

Answer:

Step-by-step explanation:

m∠EBC = 45°

3x + 9y = 45

Divide the entire equation by 3

x + 3y = 15 --------------------(I)

m∠EAB = 45

5x + 5y = 45

Divide the entire equation by 5

x +y = 9 -------------(II)

Multiply equation (II) by (-1)

(I)             x + 3y = 15

(II)*(-1)    <u> - x -  y   = -9</u>   {Now add}

                   2y   = 6

                     y = 6/2

                     y = 3

Plugin y = 3 in equation (I)

x + 3*3 = 15

x + 9 = 15

x = 15 - 9

x = 6

6 0
2 years ago
Can someone please list things for a 13 year old girl's Christmas list ??
Alinara [238K]

Answer:

phone

makeup

american girl doll

hoverboard

new tv

new clothes

new shoes

new teddy bears

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The last one Please answer asap im still crying
Anna007 [38]

Answer:

He has 12 ten dollar bills

Step-by-step explanation:

Let t = number of 10 dollar bills

f = number of fifty dollar bills

t+f = 25  since he has 25 bills

solving for f

f = 25 -t

Then we know he has 770 dollars

10t+50f = 770

Using f = 25-t in the above equation

10t + 50 ( 25-t) = 770

Distribute

10t+ 1250 - 50t = 770

Combine like terms

-40t+1250 = 770

subtract 1250 from each side

-40t - 1250-1250 = 770-1250

-40t = -480

divide each side by -40

-40t/-40 = -480/-40

t =12

He has 12 ten dollar bills

5 0
4 years ago
In golf, scores are based on par. Par 72 means that a golfer should hit the ball 72
nasty-shy [4]

Answer:

round          score

1                    -2

2                   -6

3                   -4

4                   -4

Step-by-step explanation:

round 1 score = 70 - 72 = -2, it is under par because the score i slower than 72 (par)

round 2 score = 66 - 72 = -6, it is under par because the score i slower than 72 (par)

round 3 score = 68 - 72 = -4, it is under par because the score i slower than 72 (par)

round 4 score = 68 - 72 = -4, it is under par because the score i slower than 72 (par)

An integer is a whole number (not a fraction or decimal) that can be either positive or negative.

7 0
3 years ago
The fat content for seven different sandwiches at a restaurant is 42, 61, 13, 9, 12, 42, and 62. Find the mean, median and mode
cestrela7 [59]
The mode of the given data set is 42, becuase mode is define as the number with the must number of responses or result.
The mean of the given data set is 26.89, because it is define as the average of the data set
The median of the data set is 42, it is define as the middle figure when the data set is already arrange ascending or descending.
6 0
3 years ago
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