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Paraphin [41]
3 years ago
12

Can someone please help me with this!!!

Mathematics
1 answer:
Yanka [14]3 years ago
6 0
4mins---->12 cars
6mins---->(6*12/4)=18


4mins---->12
5mins---->(5*12/4)=15


And so on
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Please help! It's due tomorrow! 15 points!:
ludmilkaskok [199]
Suzy:  (7 days)(5/4 miles per day) = 35/4 miles

Gretchen:  (7 days)(3 miles per day) = 21 miles

Subtracting, 21 miles less 35/4 miles = 49 miles (difference)
6 0
3 years ago
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The volume of this sphere is 904.32 cubic inches. What is the surface area of this sphere?
andrew-mc [135]

Answer:

A = 4 pi R^2     V = 4/3 pi R^3

A / V = 3 / R

Also, R = (3 * V / 4 * pi)^1/3 = (3 * 904.32 / (4 * pi))^1/3 = 6 in

So A = 3 / 6 * V = 1/2 * 904.32 = 452.16 in^2

8 0
3 years ago
11 people enter a pie eating contest. how many ways can the prize be awarded to the top 3
True [87]
This is a permutation question because we care about the order.
We can demonstrate this by letting each person be a person in the pie eating contest.

A   B   C   D   E   F   G   H   I   J   K

_   _   _

Now, there are 11 ways for the first prize to be won, since there are no restrictions upheld. Let's say A wins the first prize.

B   C   D   E   F   G   H   I   J   K

A   _   _

Now, assuming prizes aren't shared, there are only ten people left to win the second prize.
Using this logic, then we can say that nine can win the third prize.

Thus, our answer is 11 · 10 · 9 = 990 ways.

However, this method works for this question.
What happens when the number of places we want gets significantly larger?
That's when we introduce the permutation formula.

We know that 11·10·9·8·7·6·5·4·3·2·1 = 11!, but we don't want 8! of them.
This is the formula for permutation.

^{11}P_3 = \frac{11!}{(11 - 3)!} = 990
8 0
3 years ago
I'VE ASKED THIS THREE TIMES AND GOTTEN SARCASTIC ANSWERS, PLEASE HELP, BRAINLIEST
zloy xaker [14]

Answer:

Question 1) 2x − y = -6

Question 2) (-1, 7)

6 0
2 years ago
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Write 3 expressions that can be used to find angle C.
8090 [49]

Answer:

sin^{-1}(x) = \frac{55}{73} \\\\cos^{-1}(x) = \frac{48}{73} \\\\tan^{-1}(x) = \frac{48}{55}

Step-by-step explanation:

Since you're finding the angle, you use the inverse of sin, cos, and tan.

7 0
3 years ago
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