1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
melomori [17]
3 years ago
8

Please help will give brainliest

Mathematics
1 answer:
deff fn [24]3 years ago
3 0

Since the sum of the probabilities of all possible outcomes must be 100%, we can deduce the following:

  • Cooking in under 20 minutes: 10%
  • Cooking between 20 and 30 minutes: 85%
  • Cooking in more than 30 minutes: 5%

In fact, the probabilities of cooking in less than 20 or more than 30 sum up to 15%, which means that the remaining outcome (i.e. cooking time between 20 and 30) must complete this probability to 15, and in fact 15+85=100.

That being said, all three answers are simply a combination of these three scenarios: let C be the cooking time, for aesthetic reasons:

P(C\geq 20) = P(20 \leq C \leq 30)+P(C\geq30) = 85\%+5\%=90\%

P(20 \leq C \leq 30) = 85\%

P(C\leq 30) = P(C\leq20)+P(20 \leq C \leq 30) = 10\%+85\%=95\%

You might be interested in
Who knows the answer to this ?
Iteru [2.4K]

Answer:

D

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Candace has $20 more than Amar. Their combined money totals $95. Write a system of equations represents this situation
STALIN [3.7K]

Answer:

Candace has $57.5 and Amar has $37.5.

Step-by-step explanation:

x+(x+20)=z

x+20=y

x+y=z

--------------

2x+20=95

2x=95-20

2x=75

x=75/2

x=37.5

37.5+20=y=57.5

5 0
3 years ago
Read 2 more answers
PLEASE HELP!!!! Find the area of the rhombus.
anygoal [31]

Answer:

30

Step-by-step explanation:

A=pq

   ----------

      2

6 0
2 years ago
Read 2 more answers
Pls help me now hurry
arlik [135]

Answer:

i believe it means c. middle

Step-by-step explanation:

tell me if this is wrong

7 0
3 years ago
A poster is to have a total area of 125 cm2. There is a margin round the edges of 6 cm at the top and 4 cm at the sides and bott
jeka57 [31]

Answer:

The correct answer is 15 cm.

Step-by-step explanation:

Let the width of the required poster be a cm.

We need to have a 6 cm margin at the top and a 4 cm margin at the bottom. Thus total margin combining top and bottom is 10 cm.

Similarly total margin combining both the sides is (4+4=) 8 cm.

So the required printing area of the poster is given by {( a-10 ) × ( a - 8) } cm^{2}

This area is equal to 125 cm^{2} as per as the given problem.

∴ (a - 10) × (a - 8) = 125

⇒ a^{2} - 18 a +80 -125 =0

⇒ a^{2} - 18 a -45 = 0

⇒ (a-15) (a-3) = 0

By law of trichotomy the possible values of a are 15 and 3.

But a=3 is absurd as a > 4.

Thus the required answer is 15 cm.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Mateo is draining a pool at a rate of 1/8 of a gallon every 1/2 hour. If he continues to drain the pool , how much waters will b
    13·2 answers
  • Simplify this power raised to a power: (54^4)^4
    9·1 answer
  • Ben buys a car for $50,000. The value of the car decreases at a rate of 4% per year. How much will the car be worth in 3 years?
    9·1 answer
  • What type of angle is shown here?
    15·2 answers
  • The difference between two numbers is 9 and the product of the numbers is 162. Find the two numbers
    5·1 answer
  • The measure of ∠BAC is π/3 radians and the measure of ∠CAD is π/2 radians. What is the measure of ∠BAD?
    14·1 answer
  • Find the unknown side length x. Write your answer in simplest radical form
    14·1 answer
  • Mr. Kurris is 50 years old. In four years, his house will be paid off and his daughter will be finished with collage. He wants t
    11·1 answer
  • Which lines are parallel? Check all that apply.
    8·2 answers
  • 1. Mark practices the piano for 2/3 of an hour for 6 hours every week. How many hours
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!