3 years ago

Don't know how to start on this problem.

1 answer:

7 0

The answer is no. this is because if you toss a coin two times the probability of landing on heads twice is 1/4. if it doesn't land on tails twice it can land on heads once and tails once. this means there are more possibility and cannot be the same

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If cos θ = .62 and if 0<θ<90 what is the approximate value of sin θ to the nearest hundredth

Deffense [45]

$\cos\Theta=0.62\\\\\text{Use:}\ \sin^2\alpha+\cos^2\alpha=1\\\\\sin^2\Theta+(0.62)^2=1\\\\\sin^2\Theta+0.3844=1\ \ \ |-0.3844\\\\\sin^2\Theta=0.6156\to\sin\Theta=\pm\sqrt{0.6156}\\\\\sin\Theta_1\approx-0.78\ \vee\ \sin\Theta\approx0.78\\\\\Theta\in(0^o;\ 90^o),\ therefore\ \sin\Theta \ \textgreater \ 0\to\boxed{\sin\Theta\approx0.78}$

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3 years ago

5z - 3 >7 or 4z -6< - 10

tiny-mole [99]

Answer:

4z -6< - 10= Z= < -1

5z - 3 >7= Z=< 2

Step-by-step explanation:

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3 years ago

-1 + 2x - x = x - 8 + (-x)

CaHeK987 [17]

Answer:

x = -7

Step-by-step explanation:

-1 + x = -8

x = -7

6 0

3 years ago

An angle measures 3.2° less than the measure of its complementary angle. What is the measure of each angle?

cupoosta [38]

Answer:

Step-by-step explanation:

x - measure of angle

x + 3.2° - measure of its complementary angle

Complementary angles adds to 90°

x + x + 3.2° = 90°

2x = 90° - 3.2°

2x = 86.8°

x = 86.8°÷2

x = 43.4°

x+3.2° = 43.4° + 3.2° = 46.6°

4 0

3 years ago

What is the distance between the points (2, 4) and (-1,8)?

Sergeu [11.5K]

Answer:

use the distance formula

Step-by-step explanation:

d=_/(x1-x2)^2+(y1-y2)^2

plug the existing values into the formula for your answer. i don’t have a calculator atm so sorry

4 0

3 years ago

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