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larisa86 [58]
2 years ago
9

Larry earns $5.25 per hour helping his neighbor. Last month he earned $220.50. How many

Mathematics
1 answer:
Veseljchak [2.6K]2 years ago
8 0
He worked 42 hours.
Explanation: If he earns $5.25/ hr you would divide the amount of money he earned by 5.25 which equals 42. By doing this you are finding out how many times 5.25 (how much he makes in ONE hour) goes into 220.50 therefore finding out how many hours he worked.
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(x^2-3x+2)^2 - 4x + 2
larisa86 [58]

Answer:

x^{4} -6x^{3} +13x^{2} -12x+4

Step-by-step explanation:

(x^{2} -3x+2)^{2} -4x+2\\(x^{2} -3x+2)(x^{2} -3x+2) -4x+2\\x^{4} -3x^{3} +2x^{2} -3x^{3} +9x^{2} -6x+2x^{2} -6x+4\\x^{4} -6x^{3} +13x^{2} -12x+4

7 0
2 years ago
Which best describes a number that cannot be irrational
vazorg [7]
Am irrational number is a number that cannot be expressed as a fraction for any integers. numbers of the form,where is the logarithm, are irrational if and are integers, one of which has a prime factor which the other lacks.    is irrational for rational       
8 0
3 years ago
Read 2 more answers
Suppose a fair 6-sided die is tossed five times. What is the probability that we see at least one three in the five tosses?
Marta_Voda [28]

Answer:

C. 0.1667

Step-by-step explanation:

1/6 +0/6 + -1/6

The closest answer is C. 0.1667

Based on 2nd throw of dice shows zero then  0.1667 of the answer is shown on the 3rd throw in decimal form of -1/6

3 0
3 years ago
What is cos 60 degrees
MakcuM [25]

Answer:

This is a question you should know in trig.

You should search up how to solve for simple trig functions

The cos of 60 degrees is 1/2 just because you asked

7 0
3 years ago
Read 2 more answers
Find y’ for y=7sec^3x
laiz [17]
Taking the derivative of 7 times secant of x^3:
We take out 7 as a constant focus on secant (x^3)
To take the derivative, we use the chain rule, taking the derivative of the inside, bringing it out, and then the derivative of the original function. For example:
The derivative of x^3 is 3x^2, and the derivative of secant is tan(x) and sec(x).
Knowing this: secant (x^3) becomes tan(x^3) * sec(x^3) * 3x^2. We transform tan(x^3) into sin(x^3)/cos(x^3) since tan(x) = sin(x)/cos(x). Then secant(x^3) becomes 1/cos(x^3) since the secant is the reciprocal of the cosine.

We then multiply everything together to simplify:

sin(x^3) * 3x^2/ cos(x^3) * cos(x^3) becomes

3x^2 * sin(x^3)/(cos(x^3))^2

and multiplying the constant 7 from the beginning:

7 * 3x^2 = 21x^2, so...

our derivative is 21x^2 * sin(x^3)/(cos(x^3))^2


6 0
3 years ago
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