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Stells [14]
2 years ago
7

Select all ratios equivalent to 20:15

Mathematics
2 answers:
Radda [10]2 years ago
6 0

Answer:

b and c

Step-by-step explanation:

Vera_Pavlovna [14]2 years ago
6 0

Answer:

B and C

Step-by-step explanation:

20:15 is equal to 4:3

4:3 is equal to 8:6 (x2)

4:3 is equal to 12:9 (x3)

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Which pair of angle measures satisfy the condition sin J = cos K?
kipiarov [429]
Sin J = cos K
sin J = cos (90 - J)

So, K = 90 - J

Therefore, 60 deg, 30 deg satisfy the condition sin J = cos K.
5 0
3 years ago
The mayor of a town receives 75% of the votes in a town election. If 680 people voted, how many votes did the mayor receive? 360
7nadin3 [17]
First you need to put everything as 1 unit. I'll convert both to fractions for now.
75% = 3/4

680/1 * 3/4

Cross Multiply

2040/4

Simplify

510

The mayor received 510 votes.
5 0
3 years ago
Eight is added to a number and the sum is doubled, the result is -11 less than the number. Find
inna [77]
If you don’t know what a number is, you should substitute it for x and make an equation with the information you have been given. This gives:

(x + 8) x 2 = x - 11

Then, solve:

2x + 16 = x - 11

2x = x -27

x = -27

This can then be checked by using the number in the original text.

-27 + 8 = -19

-19 x 2 = -38

-38 is 11 less than -27.

Hope this helps :)
3 0
3 years ago
The point (-7,4) in on the terminal side of an angle t. Find sec (t) to two decimal places.
Sliva [168]

Answer:

  -1.15

Step-by-step explanation:

The tangent of the angle can be found as ...

  tan(t) = (y-coordinate)/(x-coordinate) = -4/7

The secant of the angle is related by ...

  sec(t)² = tan(t)² +1 = (-4/7)² +1 = 65/49

Then the secant of this 2nd-quadrant angle is ...

  sec(t) = -√(65/49) = -(√65)/7 ≈ -1.15

6 0
2 years ago
How to do long division with polynomials?
myrzilka [38]
<span>Divide the first term of the numerator by the first term of the denominator, and put that in the answer.Multiply the denominator by that answer, put that below the numerator.Subtract to create a new polynomial.

Hope this helps. :)

</span>
5 0
3 years ago
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