At the beginning of the semester, a professor tells students that if they study for the tests, then there is a 55% chance they will get a B or higher on the tests. If they do not study, there is a 20% chance that they will get a B or higher on the tests. The professor knows from prior surveys that 60% of students study for the tests. The probabilities are displayed in the tree diagram.


A tree diagram. Random student studies for test is 0.6, and does not study for test is 0.4. Studies for test to Gets B or higher is 0.55; does not get B or higher is 0.45. Does not study for test to Gets B or higher is 0.20; does not get B or higher is 0.80.


The professor informs the class that there will be a test next week. What is the probability that a randomly selected student passes the test with a B or higher?


0.33

0.41

0.55

0.75

Answer:

i think it is 0.33 probably wrong

Step-by-step explanation:

i  am proably wrong

does how many mean to add or subtract?

Martin has 5 cups of flour if he needs 1/4 cups of flour for one jumbo cookie how many jumbo cookies can he make?
A. 20
B. 5
C. 4
D. 24
​

In a class with 28 students, there are 19 boys. What is the ratio of girls to boys? 9:19 19:28 19:9 28:9​

Sebastian writes the recursive formula f(x+1) = 4f(x) to represent a geometric sequence whose second term is 12.

Which explicit formula can be used to model the same sequence?

f(x) = 12(4)x
f(x) = 3(4)x − 1
f(x) = 4(12)x
f(x) = 4(3)x − 1

what is 4 devided by 3/4

Help Please!!! Find the slope.

If a bicyclist travels 30 kilometers in two hours, her average speed is?

5. If the ratio of boys to girls in a student's class is 5 to 7, what fraction of the class is boys?
What fraction is girls?

what is the decimal equivalent of 8/12

Here are the ingredients needed to make 8 pancakes.
250 ml milk
1 egg
140g flour
5G butter

Simon makes 4 pancakes. Work out how much milk he needs.

Craig makes 12 pancakes. Work out how much butter he needs.

Please Help 15 points and brainliest for best answer thank you it's on the picture provided

What is the slope of the line

I need help with this is this circumference or areas will mark you brainly if right

a box of oil paints contains 9 cans, each can is the same weight. if the box weighs 20.25 pounds, how much does each can weigh? and how many pounds if there were only 6 cans?​

Tom has a collection of 13 snakes, 4 of which are purple and 5 of which are happy. He observes that
all of his happy snakes can add,
none of his purple snakes can subtract, and
all of his snakes that can't subtract also can't add.
Which of these conclusions can be drawn about Tom's snakes?

A)Purple snakes can add.
B) Purple snakes are happy.
C) Snakes that can add are purple.
D) Happy snakes are not purple.
E) Happy snakes can't subtract.

answer for 11 points and brainliest

The triangle on the grid will be translated two units down. On a coordinate plane, triangle A B C has points (2, 1), (0, negative 1), (2, negative 1). Which shows the triangle when it is translated two units down? On a coordinate plane, triangle A prime B prime C prime has points (0, negative 1), (0, negative 3), (2, negative 3). On a coordinate plane, triangle A prime B prime C prime has points (0, 1), (negative 2, negative 1), (0, negative 1). On a coordinate plane, triangle A prime B prime C prime has points (2, negative 1), (2, negative 3), (0, negative 3). On a coordinate plane, triangle A prime B prime C prime has points (2, negative 1), (2, negative 3), (0, negative 1).

please answer im taking the unit test on edge2021 and i need help ;(

Angela owns a set of 6-inch tall glasses. Each glass has a diameter of 3 inches. Angela has three people over for dinner. Each guest will be served a full glass of milk. How much milk will Angela need (in cubic inches)? Use 3.14 for pi ()

You want to find the width, AB, of a river. You walk along the edge of the river 100 ft and mark point C. Then
you walk 22 ft further and mark point D. You turn 90° left and walk until your location, point A, and point C are
collinear. You mark point E at this location, as shown.

(a) Suppose DE = 42 ft. What can you conclude about the width of the river? Explain. Your explanation
should include the approximate width and how you got this answer.
(b) Can you conclude that △ and △ are similar? Why or why not?

What is the solution to the equation below? Write your answer as an improper fraction.

2/5x+1/2=2

Find the unit rate
$87.75 in 6.75 minutes

Pls help ASAP PLS PLS PLS

PLease Help!!
ALgebra 2
WIll be giving extra points

Could someone answer this for me and explain how you solved it ? (Geometry Class)

Will give you brainliest PLS HELP ASAPPP

Help

Don’t use for points or will take it back

Do 4x and 15+x have the same value when x is 5

PLEASE HELP!! 30 POINT!

What is the length of side s of the square shown below?
1450
6
s
90°
O A. 2
B. 6
O C. 16

Net pay is the difference between a worker’s gross income and his or her deductions. A person’s gross income for the year was $65,000 and their total deductions were $12,860. What was their net pay for the year? Use the formula P = I - d, where P is the net pay, I is the gross income and d is the deductions.
a. $53,140 is the net pay
b. $77,860 is the net pay
c. $72,860 is the net pay
d. $52,140 is the net pay

Your car can drive 300 miles on a tank of 11 gallons. Your car gets
to the hundredths place.
mpg. Round