MATHEMATICS HIGH SCHOOL

I can't figure out the answer
I can't figure out the answer - 1

Answers

Answer 1
Answer: 3 should be the answer
Answer 2
Answer:

Answer:

39

Step-by-step explanation:

y=arctan(0.8)=38.65=39

Related Questions

A square pond is to be built in a park. The pond is 50 meters long and 50 meters wide. There should be a tile sidewalk 5 meters wide all around the pond. The tile is sold in crates of 45 square meters of tile. What will the tile cost if the cost of each box of tile is $74
Solve 2cos^2x + cosx − 1 = 0 for x over the interval [0, 2 pi ).
Lydia wrote 4 1/2 pages of her science report in one hour. what was her writing rate in pages per minute?
Which equation represents the line that passes through the point (3,4) and is parallel to the x-axis?x = 4 x = 3 y = 4 y = 3
Which verbal expression best describes the algebraic expression 3x ÷ 5?The quotient of three times some number and five The product of some number and five divided by three The quotient of three and some number times five The sum of three and some number divided by five

A restaurant sells only two desserts,pie and cake.A piece of pie cost $4.A piece of cake cost $5.The restaurant sells 100 desserts,which cost a total of $473.How many pieces of pie did they sell (HELP NEEDED FAST)

Answers

Let p and c be the pieces of pie and cake respectively.

We have p+ c= 100 (because the total number of pieces of pie and cake is 100).

On the other hand, we have $4p+ $5c= $473
or 4p+ 5c= 473

p+c=100
4p+5c=473

Solving the set of equations above, we have: p= 27, c=73.

They sold 27 pieces of pie~
pie = x
cake = y

x + y = 100
4x + 5y = 473
4x + 4y = 400
substract it
y = 73

x + y = 100
x + 73 = 100
x = 100 - 73 = 27

Which statement implies that A and B are independent events?A. P(B|A) = P(B A)

B. P(B|A) = P(B)
P(A)
C. P(B|A) = P(A)

D. P(B|A) = P(B)

Answers

The events A,B are independent if and only if P(A\cap B)=P(A)\cdot P(B). Under this condition, we have conditional probabilities

P(A\mid B)=(P(A\cap B))/(P(B))=(P(A)\cdot P(B))/(P(B))=P(A)

P(B\mid A)=P(B)

so the answer is D.

Answer:

The answer is D.

Step-by-step explanation:

What is 5,339x6 equal to in this case

Answers

32034 

All I had to do was multiply. Is there more to the problem?

In the function f(x)=(x-2)^2+4, the minimum value occurs when x is

Answers


The graph of the function is a parabola. 

The nose comes down as far as y=4 but no farther.

That happens when  (x - 2)² = 0 , and THAT happens when x = 2 .
f(x) = (x - 2)² + 4
f(x) = (x - 2)(x - 2) + 4
f(x) = (x(x - 2) - 2(x - 2)) + 4
f(x) = (x(x) - x(2) - 2(x) + 2(2)) + 4
f(x) = (x² - 2x - 2x + 4) + 4
f(x) = (x² - 4x + 4) + 4
f(x) = x² - 4x + 4 + 4
f(x) = x² - 4x + 8

x = -(b)/(2a) = -(-4)/(2(1)) = -(-4)/(2) = -(-2) = 2

Question 2 (Multiple Choice Worth 6 points)(09.03 LC)

Tanya drives to work every day and passes two independently operated traffic lights. The probability that both lights are red is 0.55. The probability that the first light is red is 0.69. What is the probability that the second light is red, given that the first light is red?
0.83
0.75
0.80
0.73

Answers

Answer:

(C) 0.80

Step-by-step explanation:

Let the probability that the first light is red is= P_(1) and

the probability that the second light is red= P_(2). Then,

Probability that both lights are red= P( P_(1) and P_(2) )= 0.55,

Probability that the first light is red= P(P_(1))=0.69,

Probability that the second light is red, given that the first light is red=P( P_(2) /P_(1))=(P(P_(1) and P_(2)) )/(P(P_(1)) )

=(0.55)/(0.69)

=0.7971

≈0.80
Given:
Probability that both lights are red 0.55
Probability that 1st light is red 0.69

Find the probability that the 2nd light is red, given that the first light is red.

0.55/0.69 = 0.797 or 0.80

The probability that the 2nd light is red while the 1st light is also red is 0.80.

For water to be a liquid, its temperature must be within 50 Kelvin of 323 Kelvin. Which equation can be used to determine the minimum and maximum temperatures between which water is a liquid?

Answers

Answer:

| T-50 |= 323

Step-by-step explanation:

For water to be a liquid, its temperature must be within 50 Kelvin of 323 Kelvin

LEt T be the temperature

Temperature must be within 50 Kelvin of 323 Kelvin

So the difference is 50 , that is the temperature T is between 323-50 and 323+50

we use absolute function

|T-50|= 323

So the equation used to determine the minimum and maximum temperatures is | T-50 |= 323
abs(T-50)=323 Where T is in degrees Kelvin. abs () means absolute value. So T=323 plusorminus 50
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