A cell phone company orders 600 new phones from a manufacturer. If the probability of a phone being defective is 3.5%, predict how many of the phones are likely to be defective. Round to the nearest whole number.18 phones
21 phones
210 phones
26 phones

Answers

Answer 1

Answer: To determine the number of cellphones likely to be defective, multiply the number of phones ordered by the probability. In this item, the product of 600 and 3.5% or 0.035 is 21. Therefore, 21 out of 600 phones are likely to be defective. The answer is the second among the choices.

Answer 2

Answer:

Answer:

Step-by-step explanation:

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Explain why the sine of an acute angle of a right triangle is equal to the cosine of its complement
And I also need help in this one.

How to solve it ...

1. 5-2x²-6x
2. (x+3) (x+4)=0

Answers

$1.\n5-2x^2-6x=0\n-2x^2-6x+5=0\n\na=-2;\ b=-6;\ c=5\n\n\Delta=b^2-4ac\to\Delta=(-6)^2-4\cdot(-2)\cdot5=36+40=76\n\nx_1=(-b-\sqrt\Delta)/(2a)\to x_1=(6-√(78))/(2\cdot(-2))=(6-√(4\cdot19))/(-4)=(6-2√(19))/(-4)=(√(19)-3)/(2)\n\nx_2=(-b+\sqrt\Delta)/(2a)\to x_2=(3-√(19))/(2)$

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$2.\n(x+3)(x+4)=0\iff x+3=0\ \vee\ x+4=0\n\nx=-3\ \vee\ x=-4$

Only need help with 8,9,10 please Need the answers Fast don’t understand

Answers

Answer: For number 8, x=6. For number 9, x=7. For number 10, x=15

Step-by-step explanation:

#8:

Angle 16x-6 corresponds to the 90 degree angle. Therefore, they are equal.

16x-6=90

Add six: 16x=96

Divide by 16: x=6

Angle 12x-4 and angle 10x+10 correspond. Therefore, they are equal.

12x-4=10x+10

Subtract 10x: 2x-4=10

Add four: 2x=14

Divide by 2: x=7

#10

Angles 7x and 5x+30 are alternate exterior angles. Therefore, they are equal.

7x=5x+30

Subtract 5x: 2x=30

Divide by 2: x=15

Need help again ?!???

Answers

Answer:

11.47

Solution,

Fromthe figure,

$cos \: 55 = (PQ)/(PR)$

$cos \: 55 = (PQ)/(20)$

$PQ = 20 \: cos \: 55$

$PQ= 11.472$

$PQ= 11 .47$

Hopethis helps...

Goodluck on your assignment...

Answer:

11.47

Step-by-step explanation:

Use SohCahToa. In this problem, you are given the hypotenuse and you are trying to solve for the adjacent side so it will be cosine. (cosine = $(adjacent)/(hypotenuse)$ )

1. set up the equation

cos55 = $(x)/(20)$

2. Multiply both sides by 20 to solve for x

20 · cos55 = 11.47

The list price of a massaging chair is $450. The net price to the retailer is $391.50. What is the trade-discount rate? *

Answers

The list price of the massaging chair is 450 dollars. Now, the net price of the retailer is 391.50.
Let's find our the trade discount rate.
=> 391.50 dollars / 450 dollars = 0.87 * 100% = 87%
=> 100% - 87% = 13% is the trade discount of the retailer.

Please help if you can!! I would appreciate it alot!People attending a baseball game either supported the home team or the visiting team. If 1144 of the people attending supported the home team and 1456 supported the visiting team, what percentage supported the home team?

Answers

Answer:

44%

Step-by-step explanation:

1144 is 44 percent of 2600

Which graph represents the function on the interval [-3,3]
F(x)=[x]-2

Answers

Answer:

Shown below

Step-by-step explanation:

The most famous of the step functions is the greatest integer function, which is denoted by the parent function $[x]$ .

So, this function is defined as:

$f(x)=[x] \ the \ greatest \ integer \ less \ than \ or \ equal \ to \ x$ .

These are the characteristics of this function:

The domain of the function is the set of all real numbers.
The range of the function is the set of all integers.
The graph has a $y-intercept$ at $(0,0)$ and $x-intercept$ in the interval $[0,1)$
The graph is constant between each pair of consecutive integers.
The graph jumps vertically one unit at each integer value.

The function $F(x)=[x]-2$ represents the parent function shifted 2 units downward. Therefore, the correct option has been chosen in the attached figure.