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
Over [174]
3 years ago
5

A factory makes car batteries. The probability that a battery is defective is 1/11. If 500 batteries are tested, about how many

are expected to be defective?
Mathematics
1 answer:
valentinak56 [21]3 years ago
3 0

Answer:

45.45 batteries

Step-by-step explanation:

The probability of any random battery being defective is 1 in 11, the number of expected defects in a population of 500 batteries is given by:

E= \frac{1}{11}*500\\E=45.45\ batteries

45.45 batteries are expected to be defective.

You might be interested in
Please just give me a good explanation on how to reflect the x-axis and y-axis so I can learn it on my own as well as answering
MrMuchimi

Answer:

Alright! BTW, the answer to the question is D :)

Step-by-step explanation:

Reflecting across the x-axis, the x-coordinate ALWAYS remains the same, but the y-coordinate is transformed into its opposite. If you forget this, fold along the x line, and you should be able to figure it out. Reflecting across the y-axis, the y-coordinate ALWAYS remains the same, but the x-coordinate is transformed into its opposite. If you forget this, fold along the y line, and you should be able to figure it out.

Hope I helped!

6 0
2 years ago
Using a = 20, b = 15<br> and c = 25, is triangle<br> ABC a right triangle?<br> Yes<br> No
Alchen [17]

Answer:

Yes

Step-by-step explanation:

400+225=625

625=25^2

8 0
3 years ago
Read 2 more answers
What is 126 divided by 14?
lana66690 [7]
\frac { 126 }{ 14 } \\ \\ =\frac { 63\cdot 2 }{ 7\cdot 2 } \\ \\ =\frac { 63 }{ 7 } \\ \\ =9
7 0
3 years ago
Does anyone know this?
Neko [114]

"c" is the hypotenuse of the largest triangle, and "a" is that triangle's shortest side. Thus the ratio is

... (longest side)/(shortest side)


Since all the triangles in the figure are similar, to complete the proportion, you need to recognize the triangle that "a" is the longest side of, then find the shortest side of that triangle.


"a" is the longest side (hypotenuse) of the smallest triangle. The shortest side of that triangle is "r". So, your proportion is ...

... c/a = a/r


The appropriate choice is the 2nd one, ...

... r

8 0
3 years ago
Find the measure of the the sides of DEF then classify it by it sides. <br> D(8,-6) E(-1,-3) F(-2,5)
Mama L [17]

Answer:

Part a) The measure of the sides of triangle DEF are

d_D_E=\sqrt{90}\ units

d_E_F=\sqrt{65}\ units

d_D_F=\sqrt{221}\ units

Part b) Is a scalene triangle

Step-by-step explanation:

we know that

the formula to calculate the distance between two points is equal to

d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}

we have the coordinates

D(8,-6) E(-1,-3) F(-2,5)

step 1

Find the length side DE

D(8,-6) E(-1,-3)

substitute in the formula

d=\sqrt{(-3+6)^{2}+(-1-8)^{2}}

d=\sqrt{(3)^{2}+(9)^{2}}

d_D_E=\sqrt{90}\ units

step 2

Find the length side EF

E(-1,-3) F(-2,5)

substitute in the formula

d=\sqrt{(5+3)^{2}+(-2+1)^{2}}

d=\sqrt{(8)^{2}+(-1)^{2}}

d_E_F=\sqrt{65}\ units

step 3

Find the length side DF

D(8,-6) F(-2,5)

substitute in the formula

d=\sqrt{(5+6)^{2}+(-2-8)^{2}}

d=\sqrt{(11)^{2}+(-10)^{2}}

d_D_F=\sqrt{221}\ units

step 4

Classify the triangle by the measure of its sides

we have

d_D_E=\sqrt{90}\ units

d_E_F=\sqrt{65}\ units

d_D_F=\sqrt{221}\ units

so

Is a scalene triangle, because is a triangle in which all three sides have different lengths.

6 0
3 years ago
Other questions:
  • Help me help me !!!!!
    9·1 answer
  • How to write a equation in standard form if slope is 8 and y- intercept is -8
    10·1 answer
  • bowl of soup is heated to 50 degrees above room temperature. The soup drop about 5 degrees every minute. About how much time wil
    7·1 answer
  • Which of the following shows the correct solution steps and solution to <br><br> 3x-2= -11
    12·2 answers
  • How many spaces do you move to convert from centimeters to millimeters?
    12·1 answer
  • 32. Mariah bought a shirt for $28.50 and a
    5·1 answer
  • The linear​ model, y equals . 1967 x plus 15.66 comma provides the approximate​ enrollment, in​ millions, between the years 2003
    8·1 answer
  • Need some help ASAP!!!!!!
    15·1 answer
  • Which statements about triangles are true? Select all that apply. Two triangles can be put together to form a parallelogram. The
    9·2 answers
  • ? What is the asthenosphere? Select all that apply.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!