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mixer [17]
3 years ago
14

Does 20/8 and 28/9 form a proportion

Mathematics
1 answer:
morpeh [17]3 years ago
4 0
No it doesn't form a proportion
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Cos (A+B) =1/5<br>COS (A-B) = 3/5<br>Then find tan (A-B)​
Soloha48 [4]

Answer:

tan (A-B)​ = ± 4/3

Step-by-step explanation:

COS (A-B) = 3/5

COS² (A-B) = (3/5)² = 9/25 = 1 - sin² (A-B)

sin² (A-B) = 1 - 9/25 = 16/25

sin (A-B) = ± 4/5

tan (A-B) = sin (A-B) / cos (A-B) = (± 4/5) / (3/5) = ± 4/3

4 0
3 years ago
A ski slope drops 30 feet for every horizontal 70 feet
ASHA 777 [7]
The angle of depression is

tan^-1 3/7 = 23.2 deg
8 0
3 years ago
A solution to a linear system" means which of the following? The y-intercepts are the same A) The rates of change for both funct
Karo-lina-s [1.5K]

the x and y values makes both equations true

Explanation

a linear system is the set of 2 linear equations.

Step 1

the solution to a linear system is the coordiante where the line intersect, this coordiante satisfies both equations, then

the x and y values makes both equations true

8 0
1 year ago
Circle any equivalent ratios from the list below.
marysya [2.9K]

Answer:

Equivalent ratios: we can that the first ratio is equivalent to the second,  then third ratio is equivalent to the forth.  

Ratio: 1: 2 Value of the Ratio:  1/2

Ratio: 5: 10 Value of the Ratio:  1/2

Ratio: 6: 16 Value of the Ratio:  3/8

Ratio: 12: 32 Value of the Ratio: 3/8

We notice that if the values are equivalent the ratios are equivalent

Step-by-step explanation:

Equivalent ratios:

To get if ratios are equivalent we look for the constant between ratios

a.Ratio: 1: 2  and Ratio: 5: 10  

We apply the method of comparing the first term of both ratios ,  and the second term of both ratios.  We see the constant is 5 ( 1/5 is equal to 2/10)

We do the same with third and forth ratio

Ratio: 6: 16 compare to Ratio: 12: 32

6/12 is equal to 16/32 the constant is 2

<u>So,  we can that the first ratio is equivalent to the second,  then, third ratio is equivalent to the forth.  </u>

Value of the Ratio:  The value is a ratio written as a fraction.

Ratio: 1: 2 Value of the Ratio:  1/2

Ratio: 5: 10 Value of the Ratio:  5/10 if we divide both sides by 5,  we can say  Value of the Ratio:  1/2

Ratio: 6: 16 Value of the Ratio:  6/16 if we divide both sides by 2,  we can say the value is 3/ 8

Ratio: 12: 32 Value of the Ratio: 12/32 if we divide both sides by 4,  we can say the value is 3/ 8

<u>If the values are equivalent the ratios are equivalent.</u>

7 0
3 years ago
Read 2 more answers
I will give thanks and five stars to the person that helps me.
pentagon [3]

Answer:

Third option is correct!

Step-by-step explanation:

x+19<28

or, x<9

so

x = {3,4,5,6}

8 0
3 years ago
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