as a car drives down the road, its tires spin on their axles. how many times does a tire on a car spin around before needing replacement?

Answers

Answer 1

Answer:

The number of times a tire on a car spins around before needing replacement depends on various factors such as the type of tire, driving conditions, maintenance, and the lifespan of the tire. It is not possible to provide an exact number without considering these factors. However, we can estimate the lifespan of a tire based on the tire manufacturer's specifications. Tire manufacturers typically provide an estimated mileage rating, such as 40,000 miles or 60,000 miles. This rating indicates the expected mileage before the tire may need replacement. For example, if a tire has an estimated mileage rating of 60,000 miles, we can assume that it will rotate approximately 60,000 times before needing replacement. This assumes that the tire wears evenly and is properly maintained. It's important to note that other factors, such as driving habits, road conditions, and tire maintenance, can affect the lifespan of a tire. Regular inspections, proper tire pressure, and rotation can help extend the life of the tire. The number of times a tire on a car spins around before needing replacement is variable and depends on factors such as the type of tire, driving conditions, maintenance, and the tire's estimated mileage rating provided by the manufacturer.

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Ellen plans to have two children but doesn't know if they will be boy-boy, girl-girl, or boy-girl. What is the probability that she will have two girls?0.25
0.5
0.75
1.00

Answers

Answer:

Option A. 0.25

Step-by-step explanation:

Ellen plans two children but does not know if they will be boy-boy, girl-girl or boy-girl.

For the first baby to be the girl child

Probability = $(1)/(2)$

Similarly probability for second baby to be the girl child will be $(1)/(2)$

Now both the children are girl to probability for this event will be

= $(1)/(2)$ × $(1)/(2)$

= $(1)/(4)$

= 0.25

Option A. 0.25 is the answer.

.25 because you would look at it like a boy-girl situation and this problem is more of a science problem. Anyways, if you do BG(BoyGirl) x BG(BoyGirl) it equals BB(Boy Boy), BG( Boy Girl ), another BG and a GG ( Girl Girl ) so there is a 1/4 chance of having 2 girls which is the same as .25.

What is the interest charge on $45.75 at 1.8% interest?O $84.77
O $0.82
O $0.05
O $0.77

Answers

Answer:

.82

Step-by-step explanation:

45.75 x .018=.82

Where are the x-intercepts for f(x) = −4cos(x − pi over 2) from x = 0 to x = 2π?

Answers

recall that to get the x-intercepts, we set the f(x) = y = 0, thus

$\bf \stackrel{f(x)}{0}=-4cos\left(x-(\pi )/(2) \right)\implies 0=cos\left(x-(\pi )/(2) \right)\n\n\ncos^(-1)(0)=cos^(-1)\left[ cos\left(x-(\pi )/(2) \right) \right]\implies cos^(-1)(0)=x-\cfrac{\pi }{2}\n\n\nx-\cfrac{\pi }{2}=\begin{cases}(\pi )/(2)\n\n(3\pi )/(2)\end{cases}$

$\bf -------------------------------\n\nx-\cfrac{\pi }{2}=\cfrac{\pi }{2}\implies x=\cfrac{\pi }{2}+\cfrac{\pi }{2}\implies x=\cfrac{2\pi }{2}\implies \boxed{x=\pi }\n\n-------------------------------\n\nx-\cfrac{\pi }{2}=\cfrac{3\pi }{2}\implies x=\cfrac{3\pi }{2}+\cfrac{\pi }{2}\implies x=\cfrac{4\pi }{2}\implies \boxed{x=2\pi }$

Whats the y intercept of y= 1/2 log(x+1)-log(2x+10)

Answers

$y=(1)/(2)log(x+1)-log(2x+10)\n\ny\ intercept\ for\ x=0:\n\n(1)/(2)log(0+1)-log(2\cdot0+10)=(1)/(2)log1-log10=(1)/(2)\cdot0-1=-1\n\nAnswer:y=-1,\ the\ point\ is\ (0;-1).$

y = 1/2 log(x + 1) - log(2x + 10)

The y-intercept of any graph is the point where x=0.

y = 1/2 log(0 + 1) - log(0 +10)

y = 1/2 log(1) - log(10)

log(1) = 0
log(10) = 1

y = 1/2 (0) - 1

y = -1

That's all there is to it. I'll bet you totally froze when you saw all those logs.

Three line segments intersect, forming angles with measures of 30,140 and x respectively.What is the value of x