Which answer is it? 19 71 83
Second one is either yes or no

x = 71°

Yes.

Step-by-step explanation:

To solve for x, use the cosine trigonometric ratio. You can remember all of the trig. ratios with SohCahToa.

"Cah" tells us "cosine is adjacent over hypotenuse", or:

cosθ = adjacent / hypotenuse

θ means the angle of reference, or the angle we are talking about.

The hypotenuse is the longest side, usually looking slanted.

The adjacent side is touching angle θ and is not the hypotenuse.

Use the formula and substitute the sides.

cosθ = adjacent / hypotenuse

cosx = 4ft / 12ft              Dividing two same units will cancel them out

x = cos⁻¹(4/12)                 Rearranged to isolate "x". Input into calculator.

x = 70.52877°                 Exact answer

x ≈ 71°                  Rounded answer

If 70° < x < 75°, the ladder is safe.

70° < 71°

71° < 75°

Since 71° is between 70° and 75°, the ladder is safe.

step-by-step explanation:

first you will have to convert 3/4 into a decimal

which is .75

then you will have to divide 1.5 by .75

which is 2

no you have to divide

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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