3 years ago

Scientific notation! I’m so confused

Mathematics

1 answer:

Vedmedyk [2.9K]3 years ago

5 0

I hope this help it from my project I did this year

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A net force of 66 N accelerates a child at 2.0m/s 2 down a smooth playground slide what is the mass of the child?

Georgia [21]

I think it c cause 68

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3 years ago

Read 2 more answers

The wheels of a monster truck are 66 inches tall. Find the distance the monster truck travels when the tires make one 360-degree

LuckyWell [14K]

Answer:

207.35 inches

Step-by-step explanation:

The wheel is in the shape of circle. The height, here, basically gives the diameter.

So,

Diameter = 66 in

Radius is half of diameter, so radius is:

66/2 = 33 inches

r = 33

Now, the distance truck travels when 1 rotation is made is the length of the perimeter of the circular wheel, or the circumference.

The formula is:

$C=2\pi r$

Where C is circumference

r is the radius

Substituting, we get the answer as:

$C=2\pi r\\C=2\pi (33)\\C=66\pi\\C=207.35$

The distance covered is about 207.35 inches

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3 years ago

Cos s=-2/5 and sin t=4/5, s and t are in quadrant II find cos(s+t) and cos(s-t)

mojhsa [17]

Answer:

•cos(s+t) = cos(s)cos(t) - sin(s)sin(t) = (-⅖).(-⅗) - (√21 /5).(⅘) = +6/25 - 4√21 /25 = (6-4√21)/25

•cos(s-t) = cos(s)cos(t) + sin(s)sin(t) = (-⅖).(-⅗) + (√21 /5).(⅘) = +6/25 + 4√21 /25 = (6+4√21)/25

cos(t) = ±√(1 - sin²(t)) → -√(1 - sin²(t)) = -√(1 - (⅘)²) = -⅗

sin(s) = ±√(1 - cos²(s)) → +√(1- cos²(s)) = +√(1 - (-⅖)²) = √21 /5

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3 years ago

Tom and his friends decided to go on a hiking gtrip. They started at 45 feet above sea level and went up the mountain at a rate

Phantasy [73]

What the question? Tell me then I can maybe help

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3 years ago

Suppose a and b are independent events. If l(a) =0.8 and p(b) =0.85 what is p(a and b)

nika2105 [10]

Answer: 0.68

Step-by-step explanation:

just took test and got it right

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3 years ago