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balandron [24]
3 years ago
14

20% of all trucks undergoing a certain inspection will fail the inspection. Assume that 40 trucks are independently undergoing t

his inspection, one at a time. The expected number of trucks who fail the inspection is:
Mathematics
2 answers:
Ulleksa [173]3 years ago
6 0
I need help with this too... 
Help :(
olga2289 [7]3 years ago
3 0
20% of 40 = 8
So 8 trucks are expected to fail the inspection.
Hope it helps!
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Original price of shorts $53.95 Discount 30% Tax 4.5 percent %
Alla [95]

Answer:

$39.50 is the final payment.

Step-by-step explanation:

0.3 x 53.95 = 16.185

53.95 - 16.185

= 37.765

0.045 x 37.765 = 1.699425 + 37.765

= 39.464425 and round

5 0
3 years ago
Is the function even or odd?
sweet [91]

Answer:

f(\theta)=\cos(\theta) is an even function.

Step-by-step explanation:

Recall when it means when a function is even or odd. An even function has the following property:

f(-x)=f(x)

And an odd function has the following property:

f(-x)=-f(x)

So, let's test some values for cos(x).

Let's use π/3:

f(\pi/3)=\cos(\pi/3)

From the unit circle, was can see that this is 1/2 (refer to the x-coordinate).

Now, let's find -π/3. This is the same as 5π/3. Thus:

f(-\pi/3)=\cos(-\pi/3)

And again from the unit circle, we can see that this is 1/2.

Therefore, despite the negative, the function outputs the same value.

Cosine is an even function.

Notes:

Cosine is an even function and sine is an odd function. It's helpful to remember these as they can help you solve some trig problems!

6 0
3 years ago
Anyone know the answer to this?
kiruha [24]

Answer:

42

Step-by-step explanation:

Angle ABD = Angle CBD + Angle ABC

You know ABD is 70, CBD and ABC are in terms of x

70 = 5x + 13 + 3x + 33

70 - 13 - 33 = 8x

24 = 8x

3 = x

Replacing x in Angle ABC:

3 * 3 + 33 = 42

6 0
3 years ago
Explain how to form a linear combination to eliminate the variable y for this system. 2x - 3y = 3 5x + 2y = 17A)Multiply the fir
jonny [76]
We aer goint to eliminate the x's
multiply first by -5 and 2nd by 2
so that is B
7 0
3 years ago
Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the dif
rodikova [14]

Answer:

60men 40 women.... but I ain't sure

4 0
3 years ago
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