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
kupik [55]
3 years ago
8

A compact disc is designed to last an average of 4 years with a standard deviation of 0.9 years. What is the probability that a

CD will last less than 3 years?
1.11%
13.35%
86.65%
100%
Mathematics
1 answer:
jarptica [38.1K]3 years ago
4 0
 <span>3 is 1.0 below the mean. That is 1.0 / 0.9, or 1.1111... standard deviations below the mean. 
So look up z < -1.11 on your graphing calculator.
It should be around 0.1335 or 13.35%</span>
You might be interested in
a shopkeeper buys coffee at 4.20 per kg and sells it at 63 cents per 100 g Calculate his profit percentage
Bingel [31]
420 cents for 1000 g. So 42 cents for 100 g (i crossed multiplied). %profit=63-42/42 *100=50%
7 0
2 years ago
What is the GCF of 18 and 130?<br> 2,<br> 3,<br> 5,<br> 8,<br> 13,
grandymaker [24]
2 because the others aren’t factors of both
6 0
2 years ago
Read 2 more answers
What scale factor was used in going from the grey triangle to the yellow triangle?
Lena [83]

Answer:

2

Step-by-step explanation:

First, we need to find out the length of the third side of the triangle. (The right side of the Y-axis) We use the pythagorean theorem to find it. 4²+2² = 20 find the square root of 20 √20 = ~4.5 so with this in mind, lets find the length of the whole triangle. 8²+4²=80 then √80 = ~9 with this, we can say that since the length of one of the legs has increased by 2, and so has the length of the base, and also the length of the hypotenuse, the scale factor must be 2.

8 0
3 years ago
At Fruits R Us, Mr. Orchard realizes that dried pineapple slices and dried apricots were two of his top dried fruit sellers. So
Rudik [331]

Answer:

Step-by-step explanation:

From the information given, you can write the following equations:

x+y=300 (1)

5x+8y=300*7

5x+8y=2100(2)

First, you can isolate x in (1):

x=300-y (3)

Now, you can replace (3) in (2):

5(300-y)+8y=2100

1500-5y+8y=2100

3y=2100-1500

y=600/3

y=200

Then, you can replace the value of y in (3) to find x:

x=300-200

x=100

According to this, the answer is that he should use 100 pounds of dried pineapple and 200 pounds of dried apricots.

4 0
3 years ago
Make equations to show how he got the 240 and the 960. Move numbers and symbols to the lines to make the equations.
Sophie [7]

Answer:

its 10 cuz 240 x 984 = 12009

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Graham joined two congruent square pyramids to form the composite solid. If the lateral faces of the pyramids each have an area
    9·2 answers
  • Explain the distance formula. Then use it to calculate the distance between A(1,1) and B(7,-7).
    14·1 answer
  • 5. What number does the model below best represent?
    14·1 answer
  • HELP PLZ WILL GIVE BRAINLIEST! find the arrithmetic means in the given sequence<br> -3,?,?,?,93
    9·2 answers
  • Find the measure of ∠C if ∠A = 5 2 x + 30 ∠B = 7 2 x + 40 ∠C = 9 2 x + 10 ∠D = 5 2 x + 20 A) 70° B) 80° C) 90° D) 100°
    9·2 answers
  • What is the indefinite integral of 1/xln(x^3) dx?
    13·2 answers
  • William had $45 dollars to spend on Vegetables. After buying 6 watermelons , he had $25.50 left .how much did each watermelons c
    10·1 answer
  • What is the difference between -6 and 4
    12·2 answers
  • Given f(x)=x^+7, find x if f(x) = 23
    15·2 answers
  • . Evaluate the algebraic expression: a + b + c when a = 2, b = 1, and c = -1
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!