3 years ago

The midpoint of ab is m(5-2). If the coordinates of a are (6,-5), what are the coordinates of b

Mathematics

1 answer:

Alex3 years ago

7 0

The coordinate of B is (4,1)

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Write an equivalent expression for n * a using only addition.

Dennis_Churaev [7]

There are two of them:

1). (n * a) means n + n + n + n + n + n + n + . . . 'a' times.

2). (n * a) also means a + a + a + a + a + a + a + a + . . . 'n' times.

4 0

3 years ago

If Ian has 4 times as many nickels as dimes and they have a combined value of 180 cents, how many of each coin does he have?

algol [13]

4 (.05) x +( .10)x =180
.20x + .10x = 180
.30x = 180
X= 6
So. 4 times 6 = 24 nickels and 6 dimes = 180 cents

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3 years ago

The picture below shows a pole and its shadow:

scZoUnD [109]

Answer:

Step-by-step explanation:

You need to use Pythagorean's Theorem to find the height of the pole. Namely,

$pole^2+15^2=113^2$ and

$pole^2=113^2-15^2$ and

$pole^2=12769-225$ and

$pole^2=12544$ so

pole = 112 cm

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4 years ago

An urn contains n balls, one of which one is special. If k of these balls are withdrawn one at a time, with each selection being

Aleksandr [31]

Using it's concept, it is found that the probability that the special ball is chosen is given by:

$p = \frac{1}{C_{n,k}}$

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

The total number of outcomes is given by the combination of k balls from the set of n balls, given by:

$C_{n,k} = \frac{n!}{k!(n - k)!}$

One ball is special, hence the probability the special ball is chosen is given by:

$p = \frac{1}{C_{n,k}}$

More can be learned about probabilities at brainly.com/question/14398287

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3 years ago

Probability and Statistics

Rainbow [258]

Answer:

Step-by-step explanation: if you want to obtain the probability that x<em> </em> $\leq$ -3 , then you need to add the probability for the cases x=-3 and x=-5.

p=0.13+0.17= 0.3

answer=0.3

6 0

3 years ago