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3 years ago

9

Help!! -Lesson: Probability. (Please explain why as well! )

1 answer:

Vladimir79 [104]3 years ago

8 0

Answer:

It is likely that the moon will be visible on the planet tonight. (Likely).

Step-by-step explanation:

Let me explain why the other choices are wrong. We know that the moon is a satellite that orbits around Earth. Within that period of the moon revolving or orbiting, it is very likely that the moon will appear. It is not impossible because the moon does have light caused by a light wave being reflected from the sun, and that light on the moon can be visible from Earth, so it is not impossible. As likely as not is wrong because the moon is visible very likely within its period of orbiting. Unlikely is wrong because although the moon may not show during a new moon, that doesn't mean that moon will most likely never show up. Likely is correct because we can the moon from Earth almost on a daily basis throughout the month. Hope this helps!

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Help me on this please

lakkis [162]

Answer:

5 miles.

Step-by-step explanation:

The Pythagorean theorem $a^{2}+b^{2} =c^{2}$ will find any side length of a perpendicular triangle when two sides are known.

We substitute for a, the shortest side, a=3 and for b, the longer side, b=4 to find the slanted hypotenuse c.

$a^{2}+b^{2} =c^{2} \\3^{2}+4^{2} =c^{2} \\9+16=c^{2}\\25=c^{2}\\5=c$

The direct route is 5 miles.

5 0

3 years ago

When a number is increased by 7.1%, the result is 89. What is the original number to the nearest tenth?

balu736 [363]

Answer:

The original number is $83.1$

Step-by-step explanation:

Let

x -----> the original number

Remember that

$100\%+7.1\%=107.1\%=107.1/100=1.071$

The increased number is equal to multiply the original number by the factor 1.071

so

$89=1.071x$

Solve for x

Divide by 1.071 both sides

$x=83.1$

3 0

3 years ago

Find all critical numbers of the function <img src="https://tex.z-dn.net/?f=g%28x%29%3Dx%5E%7B%5Cfrac%7B3%7D%7B4%7D%20%7D-2x%5E%

postnew [5]

Differentiate g using the power rule:

$g'(x) = \dfrac34 x^{\frac34-1} - 2\cdot\dfrac14 x^{\frac14-1}$

$g'(x) = \dfrac34 x^{-\frac14} - \dfrac12 x^{-\frac34}$

$g'(x) = \dfrac14 x^{-\frac34} \left(3 x^{\frac12} - 2\right)$

$g'(x) = \dfrac{3\sqrt x - 2}{4 x^{\frac34}}$

The critical points of g occur where g' is zero or undefined.

We have

$g'(x) = 0 \implies 3\sqrt x - 2 = 0 \implies \sqrt x = \dfrac23 \implies \boxed{x = \dfrac49}$

and the derivative is undefined for

$\dfrac1{g'(x)} = 0 \implies 4x^{\frac34} = 0 \implies \boxed{x=0}$

8 0

3 years ago

8) During a clearance sale, a keyboard that normally sells for $49.99 is discounted for $34.99. What is the percent discount?

olganol [36]

The percentage discount is 80%

80% of 50 is 40.

I hope this helps.

8 0

3 years ago

So this should be one of the last few ones

sergeinik [125]

Answer:

A

Step-by-step explanation:

Because you have to use the Pythagorean theorem to solve for this.

8 0

3 years ago