Answer:
341
Step-by-step explanation:
Answer:
341
Step-by-step explanation:
If a sample of 6 keyboards is randomly selected, what is the probability that at least 5 of these will have a mechanical defect
Answer:
0.1978 is the probability that at least 5 keyboards will have mechanical defect.
Step-by-step explanation:
Solution:
Given:
A repair facility has 25 failed keyboards.
10 keyboards have electrical defect.
15 of which have mechanical defect.
Randomly selected keyboard= 6
The set of A is the set of keyboards with electrical defect.
And the set of B is set of keyboards with mechanical defect.
N(A U B) = n (A) + n(B) – n (A ∩B)
Probability of at least 5 will have mechanical defect is:
= p( 5 mechanical defect U 6 mechanical defect)
= p(5 mechanical defect ) + p(6 mechanical defect)
=(15 C 5 x 10 C1 + 15 C6 X 10C0) / 25 C6
= 3003 X 10 / 177100 + 5005 X 1 / 177100
= 30030 + 5005 / 177100
= 35035 / 177100
= 0.1978
0.1978 is the probability that at least 5 keyboards will have mechanical defect.
pleaseeeeeeeeeeee brainliest
Answer:
what?
Step-by-step explanation:
The tailor determines that the cost of material varies directly with the amount of material. The cost is $42 for 14 yards of material. What is the cost for 70 yards of material?
Answer:
[tex]the \: cost \: for \: 70 \: yards \: of \: material \: is : \\ \: \$210.[/tex]
Step-by-step explanation:
[tex]let \: the \: cost \: of \: material \: be \to \: c_{m} \\ let \: the \: amount \: of \: material \: be \to \: a_{m} \\ then \: the \: expression \: is: \\ c_{m} \: \alpha \:a_{m} \\ c_{m} \: = k a_{m} \\ if \: c_{m} = 42 \: and \:a_{m} = 14 \\ then \: \to \\ k = \frac{c_{m} }{a_{m}} = \frac{42}{14} \\ k = 3 \to \: this \: is \: the \: variation \: constant. \\ when \: a_{m} = 70 : \: then \to \\ c_{m} = k a_{m} = 3 \times 70 \\ \boxed{ c_{m} = \: 210}[/tex]
♨Rage♨
d) Jerry, Barry, and Harry went fishing and they each caught a giant fish! Jerry's fish is 62 inches long. Barry's fish is 7 feet long. Harry's fish is 2 yards long. Who caught the longest fish?
Which equation represents a proportional relationship? y = 9x y = 9x , y = 9x + 1 y = 9x + 1 , y = 9x + 9
Answer: the answer is y=9x
Step-by-step explanation:
3483 rounded to the nearest 10
Answer:
3.45
Step-by-step explanation:
pretty sure
In the equation 3j = 75 + 9, what is the next step in the equation solving sequence?
Answer:
Combine 75 and 9
Step-by-step explanation:
3j = 75 + 9
Combine like terms
3j = 84
Answer:
3j = 75+9
3j = 84
j = 84/3
j = 28
The next step is to add, you are adding 75+9.
find the average of 72,95,100,85,and 88
Answer:
88
Step-by-step explanation:
72 + 95 + 100 + 85 + 88=440
440/5=88
My question is
-x/9 = -8
In the following diagram \overline{DE} \parallel \overline{FG}
DE
∥
FG
start overline, D, E, end overline, \parallel, start overline, F, G, end overline and \overline{KL} \perp \overline{FG}
KL
⊥
FG
start overline, K, L, end overline, \perp, start overline, F, G, end overline.
What is the measure of \greenD{\angle x}∠xstart color #1fab54, angle, x, end color #1fab54?
Angles are not necessarily drawn to scale.Given the following:
Answer:
<x = 31°
Step-by-step explanation:
m<BCA = m<GCJ (vertical angles)
m<BCA = 59° (substitution)
Since line KL is perpendicular to line FG, the angle formed at point B is 90°.
Therefore, m<ABC = 90°
m<BAC + m<ABC + m<BCA = 180° (sum of triangle)
m<BAC + 90° + 59° = 180° (Substitution)
m<BAC + 149° = 180°
m<BAC = 180° - 149°
m<BAC = 31°
<x = <BAC (vertical angles)
m<x = 31° (substitution)
Answer:
its 32.
Step-by-step explanation:
I i kept doing clues on khan academy and it asked me
A theater charges $45 for each general admission ticket and $25 for each same-day ticket. If Dan spent $485 on 13 tickets, how much money did he spend on same-day
tickets?
$225
$200
$125
O $75
Answer:
Step-by-step explanation:
45g + 25s = 485
g + s = 13
45g + 25s = 485
-25g - 25s = -325
20g = 160
g = 8
8 + s = 13
s = 5
25(5)= $125 on same-day tickets
The population of a large U.S. city is2,707,210. Which of the following best expresses this population?
Answer:
need a picture to answer the question
Help me ASAP!!!pls i don’t get it:(
Answer:
it is 17
Step-by-step explanation:
hope this helps :)
Answer:
21
Step-by-step explanation:
4x-12=72
+12 +12
4x=84
/4 /4
x=21
a. Find the vertex form equations (y = a(x - h)2 + k) for the parabolas below.
Assume parameter a = 1.
I
b. Then rewrite the equations in standard form (y = ax + bx + c).
Hint: multiply out your answer from part a.
Answer:
y=-(x+3)^2
y=-x^2-6x-9
Step-by-step explanation:
i uh hope this is correct
hope thia helps <3
x and y intercepts for -4x+2y=6
Answer:
y-intercept = 3
x- intercept = -1.5
Step-by-step explanation:
-4x + 2y = 6
+4x + 4x
2y = 4x + 6
2 2
y = 2x + 3
Graph then you would get the coordinates of (0, 3) and (-1.5, 0)
Answer:
x intercept: (-3/2,0)
y intercept:(0,3)
Step-by-step explanation:
solve using elimination -3x+3y=21 -x-5y=-17
Answer:
(2,6)
Step-by-step explanation:
Someone help please
Answer:
1.0
Step-by-step explanation:
you have to follow the arrow
what is the solution to this inequality . 4x+1>9x+16
Answer:
x < -3
Step-by-step explanation:
4x + 1 > 9x + 16
-15 > 5x
-3 > x
how much kinetic energy does a 4 kg cats have while at 9 m/s
Answer:
162 Joules
Step-by-step explanation:
Remember, the equation for the kinetic energy of an object is:
[tex]K=\frac{1}{2}mv^{2}[/tex]
where m is the mass of the object in kg (kilograms), v is the velocity of the object in m/s (meters per second), and K is the kinetic energy of the object in J (joules).
We are given that the cat's mass is 4 kg. We will use this for m. We are also given that the cat is moving at 9 m/s. This would be it's speed. We can use this for velocity, or v. Plugging in we get:
[tex]K=\frac{1}{2}mv^{2}=\frac{1}{2}(4)(9)^{2}=(2)(81)=162[/tex]
So K, or the kinetic energy, would be 162J.
I hope you find my answer and explanation to be helpful. Happy studying.
Which three lengths could be used to form a right triangle ?
A vending machine operator has determined that the number of candy bars sold per week by a certain machine is a random variable with mean 109 and standard deviation 11. His profit on each bar sold is $0.12, and it costs him $10 per week to maintain the machine and rent the space for it. What are the mean and standard deviation for Y= the profit he earns from this machine in a randomly selected week?
Answer:
10
Step-by-step explanation:
find surface area please
Answer:
The area is 54.6
Step-by-step explanation:
Hopefully this helps!
PLZ HALP YALL..............
Answer:
-6
Step-by-step explanation:
make since trust
its right trust
Answer:
-6
Step-by-step explanation:
-5-1
-5+-1
=-6
I think lol
Justin made peanut butter and Almond butter. He made enough peanut butter to fill 3/5 of a jar. If he made 4 1/5 times as much almond butter as peanut butter, how many jars will the almond butter fill?
Answer:6
Step-by-step expla
A flat screen television measures diagonally 40 inches and 24 inches in length. What is the width of the television?
Answer:
The width of the Television is 32 inches.
Step-by-step explanation:
It seems as if the hypotenuse of the triangle is 40 inches, and one of the side lengths of it is 24 inches.
a2+b2=c2
So if we square 40 we get 1600, which is c2
If we square 24, we get 576, which is a2.
Then you solve, 576+b2=1600
you get b2=1600
Then you get the square root of both sides which in turn gives you the answer
b=32, which is the width of the television.
Step-by-step explanation:
use the pythagorean theorem c^2 = a^2 + b^2 diagonal is the hypotenuse...
40^2 = 24^2 + b^2
b^2 = 40^2 - 24^2
b =
[tex] b = \sqrt{40 {}^{2} - 24 {}^{2} } [/tex]
What is the value of x?
x−16=8
Enter your answer in the box in simplest form.
Answer:
x = 24
Step-by-step explanation:
Lets isolate x.
Add 16 on both sides.
x-16 = 8
+16 +16
x should be isolated now.
x = 24
It is isolated.
So... x = 24
Please help ASAP! I’ll mark you brainly
2. Light is captured using__________
the absorbed light is passed along
throughout molecules
and pigments until it is transferred to a single__________.
Step-by-step explanation:
Chloroplasts (left) convert light energy into chemical energy. High-energy electrons in chloroplasts are transported through two photosystems (right). ... The energy of light captured by pigment molecules, called chlorophylls, in chloroplasts is used to generate high-energy electrons with great reducing potential.
I hope this helps
simplify 3x[18+{3+4÷(4-2)}]
✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽
[tex]3 \times 18 + 3 + 4 \div ( 4 - 2)[/tex]
[tex]= 54 + 3 + \frac{4}{4 - 2}[/tex]
[tex]= 57 + \frac{4}{4 - 2}[/tex]
[tex]= 57 + \frac{4}{2}[/tex]
[tex]= 57 + 2[/tex]
[tex]= 59[/tex]
✽
➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
↬ May ♡
Answer:
69
Step-by-step explanation:
3 ×{18 +[3 +4 :(4 - 2)]}
3 ×[18 +(3 +4 :2)]
3 ×[18 +(3 +2)]
3 ×(18 +5)
3 ×23
69
Solve |4x|+6=22 nester any fractions as decimals rounded to the nearest hundredths
Select all the expressions that equal -2 + 5.
Answer:
The answers are A, C and D