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3 years ago

If cos Θ = negative 4 over 7, what are the values of sin Θ and tan Θ?

1 answer:

7 0

Given cos theta is equal to - 4/ 7 then we can conclude that theta is in the second and third quadrants. In this case, the other leg is equal to square root of (7^2 - 4^2 ) equal to square root of 33. In this case, sin theta can be equal to +- square root of 33 / 7 and tan theta is equal to +-square root of 33 / 4.

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Tyrone biked 45 miles at an average speed of 18 miles per hour, without stopping. About how long did the ride take him? Use the

Goshia [24]

Answer: 2 1/2 hours

Step-by-step explanation: 45/18 = 2 1/2

5 0

11 months ago

495x43

Mashcka [7]

Answer:a) $5.64 b) 21 ounces of tea leaves

Step-by-step explanation:

Step 1

5 ounces of tea leaves can be bought with $2.35

1 ounce of tea can be bought with =$2.35/5 =$0.47

12 ounces at the same rate can be bought with

=12 x $0.47 = $5.64

b) 5 ounces of tea leaves can be bought with $2.35

? Ounces of tea leaves can be bought with $10

$2.35 =5 ounces of tea

$10 = ? ounces of tea

= (10 x 5)/2.35

=50/2.35

=21.27 rrounded to 21 ounces of tea leaves

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2 years ago

Reggie has $36.40 in nickels and $36.40 in dimes. What is the ratio of the number of nickels to the number of dimes that Reggie

Dmitry [639]

D 2:1, because a dime is worth twice as much as a nickel

Because the question has number of nickels listed first in the ratio that makes the answer 2:1 as opposed to B 1:2. Also, two nickels equal the same amount as one dime so for every two nickels there is one dime. In this case, there are 728 nickels and 364 dimes. 728/364 = 2/1 (simplifies down to the fourth ratio given)

6 0

2 years ago

Ellen flipped a coin 80 times. The coin landed heads up 44 times and tails up 36 times. Compare the theoretical and experimental

devlian [24]

Given:

Ellen flipped a coin 80 times. The coin landed heads up 44 times and tails up 36 times.

To find:

The theoretical and experimental probabilities of the coin landing tails up and compare them.

Solution:

We know that, the coin landed either heads up or tails up. So, the theoretical probabilities of the coin landing tails up is

$P(T)=\dfrac{Tails}{Total}$

$P(T)=\dfrac{1}{2}$

$P(T)=0.5$

Ellen flipped a coin 80 times. The coin landed heads up 44 times and tails up 36 times.

Total = 80

Tails =36

The experimental probabilities of the coin landing tails up is

$P(T)=\dfrac{Tails}{Total}$

$P(T)=\dfrac{36}{80}$

$P(T)=0.45$

Therefore, the theoretical and experimental probabilities of the coin landing tails up are 0.5 and 0.45 respectively. The theoretical probability is greater than the experimental probability.

6 0

2 years ago

PLZZZ help!!

kondor19780726 [428]

I think is B, because HL is only for right triangles

4 0

2 years ago

Read 2 more answers