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Flauer [41]
2 years ago
5

Help me please it’s an emergency

Mathematics
2 answers:
Iteru [2.4K]2 years ago
5 0

Answer:

140°

Step-by-step explanation:

Given that angle a is 40 degrees, angle b = 140 degrees

because a triangle is half of a square

and a square is 360 degrees so a triangle is 180 degrees

so 180 - 40 = 140

Sveta_85 [38]2 years ago
3 0

Answer:

50 degrees

Step-by-step explanation: we know that

If two angles are complementary, then their sum is equal to 90 degrees so A+B=90° we have A=40° substitute and solve for B 40°+B=90° B=90°-40°=50°

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Major league baseball salaries averaged $1.5 million with a standard deviation of $0.8 million in 1994. suppose a sample of 100
seropon [69]

Answer: The probability that the avg. salary of the 100 players exceeded $1 million is approximately 1.

Explanation:

Step 1: Estimate the standard error. Standard error can be calcualted by dividing the standard deviation by the square root of the sample size:

SE=\frac{0.8}{\sqrt{100}}=\frac{0.8}{10} = 0.08

So, Standard Error is 0.08 million or $80,000.

Step 2: Next, estimate the mean is how many standard errors below the population mean $1 million.

\frac{1 - 1.5}{0.08}

=-6.250

-6.250 means that $1 million is siz standard errors away from the mean. Since, the value is too far from the bell-shaped normal distribution curve that nearly 100% of the values are greater than it.

Therefore, we can say that because 100% values are greater than it, probability that the avg. salary of the 100 players exceeded $1 million is approximately 1.

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3 years ago
Determine the sign of cos pi/3 without using a calculator.
andre [41]
Pi/3 is in the first quadrant, and all trigonometric functions are positive in the first quadrant,
Therefore, cos pi/3 is positive.

8 0
3 years ago
What is the probability of getting a spade or a red card?
Verdich [7]

Answer:

  3/4

Step-by-step explanation:

1/2 the deck is red cards.

1/4 of the deck is spades.

There are no spades that are red cards, so the probability of drawing a red card or a spade at random from a well-shuffled deck is ...

  1/2 + 1/4 = 3/4

5 0
3 years ago
The base of a pyramid has n sides <br> write an expression for the number of faces of the pyramid
Keith_Richards [23]
N=5. its a pyramid. simple.
6 0
3 years ago
Read 2 more answers
Pweeze help and i will give brainliest UwU &lt;3
bazaltina [42]

Answer:

See below for answers

Step-by-step explanation:

1st blank: 2*2*2*2*2*2*2

2nd blank: 2

3rd blank: 7*7

4th blank: 7

5th blank: no

6th blank: doesn't equal

4 0
2 years ago
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