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xz_007 [3.2K]
3 years ago
13

A student found the slope of a line that passes through the points (3, 15) and (5, 9) to be . What mistake did he make?

Mathematics
2 answers:
Virty [35]3 years ago
8 0
A reciprocal, or multiplicative inverse, is simply one of a pair of numbers that, when multiplied together, equal 1. If you can reduce the number to a fraction, finding the reciprocal is simply a matter of transposing the numerator and the denominator so the answer is he used the recpriocal of the slope.
Olenka [21]3 years ago
4 0
I hope this helps you



slope=y2-y1/x2-x1


slope=9-15/5-3


slope= -6/2


slope = -3
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Fine the measure of the angle formed by the radius and the side of a regular dodecagon.
Elden [556K]

Answer:

Option D.75°

Step-by-step explanation:

we know that

The sum of the interior angles of a regular dodecagon is equal to

S=(n-2)*180

where

n is the number of sides

In this problem

n=12 sides

substitute

S=(12-2)*180

S=1,800\°

Find the measure of each interior angle

Divide the sum of the interior angles by the number of sides

1,800\°/12=150\°

The measure of the angle formed by the radius and the side of a regular dodecagon is half the measure of the interior angle

therefore

150\°/2=75\°

3 0
3 years ago
My brother insists that my answer is wrong so can anyone please answer this so I can show him​
LuckyWell [14K]

Answer:

30

Step-by-step explanation:

6/1 x 5/6 = 30/6 or 5.

5/1 divided by 1/6 is 5/1 x 6/1 or 30.

Therefore, the answer is 30.

5 0
2 years ago
Read 2 more answers
A bucket is put under a leaking ceiling. the amount of water in the bucket doubles every minute. after 8 minutes, the bucket is
frosja888 [35]
4 minutes because 4 is half of 8
7 0
3 years ago
Read 2 more answers
At a track meet, 50 people ran the 100-meter dash. 2 people finished in 11 seconds, 5 people finished in 12 seconds, 8 people fi
adoni [48]
You have to do a histogram here:

<span>11 sec: 2 people: probability is 2/50 = 1/25 = 0.04
12 sec: 5 people: probability is 5/50 = 1/10 = 0.1
13 sec: 8 people: probability is 8/50 = 4/25 = 0.16
</span>14 sec: 10 people: probability is 10/50 = 1/5 = 0.2
15 sec: 21 people: probability is 21/50 = 2.38
16 sec: 2 people: probability is 2/50 = 1/25 = 0.04
17 sec: 2 people: probability is 2/50 = 1/25 = 0.04
6 0
3 years ago
32 percent of the customers of a fast food chain order the Whopper, French fries and a drink. A random sample of 10 cash registe
weqwewe [10]

Answer: 0.0023

Step-by-step explanation:

Let X be the binomial variable that represents the number of receipts will show that the above three food items were ordered.

probability of success p = 32% = 0.32

Sample size : n= 10

Binomial probability function :

P(X=x)= \ ^nC_xp^x(1-p)^{n-x}

Now, the probability that eight receipts will show that the above three food items were ordered :

P(X=8)=\ ^{10}C_8(0.32)^8(1-0.32)^2\\\\=\dfrac{10!}{8!2!}(0.32)^8(0.68)^2\\\\=5\times9(0.0000508414176684)\\\\=0.00228786379508\approx0.0023

hence, the required probability = 0.0023

8 0
3 years ago
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