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shusha [124]
3 years ago
7

Sin(-230)=sin50 true or false

Mathematics
1 answer:
aivan3 [116]3 years ago
3 0

Answer:

True

Step-by-step explanation:

sin(-230) = 0.77 (when simplified) ___

sin(50) = 0.77                           < ---- ___|

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Express 5% as a decimal
IRINA_888 [86]

Answer:

.05

Step-by-step explanation:

you divide 5 by 100 which makes it .05

6 0
3 years ago
Ruben is buying bricks for a project. He knows that 5 bricks weigh 26 pounds. He wants
Nostrana [21]

Answer:

The weight of 24 bricks is 124.8  theoretical probability pounds

Step-by-step explanation:

26/5=5.2

24x5.2=124.8

3 0
3 years ago
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Suppose that a recent poll found that 49​% of adults believe that the overall state of moral values is poor. Complete parts​ (a)
Lunna [17]

Answer:

The mean of X is 122.5 and the standard deviation is 7.9.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they believe that the overall state of moral values is poor, or they do not believe this. The probability of an adult believing this is independent of other adults. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

In this problem, we have that:

n = 250, p = 0.49

So

E(X) = np = 250*0.49 = 122.5

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{250*0.49*0.51} = 7.9

The mean of X is 122.5 and the standard deviation is 7.9.

3 0
3 years ago
Diego buys 4.25 pounds of mushrooms. Each pound costs $2.99. Which expression gives the best estimate of the cost of the mushroo
Vadim26 [7]

Answer:

(4)($3)

Step-by-step explanation:

Given parameters:

Quantity of mushroom bought = 4.25pounds

Cost of each mushroom  = $2.99

Unknown:

Best estimate for the cost of the mushroom = ?

Solution:

The cost of the mushroom is:

 Total cost = quantity of mushroom bought x cost of each mushroom

  Total cost  = 4.25 x 2.99

    You can round 4.25 to 4 and 2.99 to 3

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8 0
3 years ago
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How do I do this and what’s the answer
lakkis [162]

Answer:

The area of the four curved surfaces is the area of one circle with a radius of 4 cm

Area = PI * radius^2

Area = PI * 4 ^ 2

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Area of yellow region = 64 - 50.265 sq cm =

= 13.735 = 13.7 sq cm (rounded to nearest tenth)

Step-by-step explanation:

6 0
3 years ago
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