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3 years ago

The vertices of the triangle is A(-2,4), B(1,2), C(-2,-2)

Mathematics

1 answer:

spin [16.1K]3 years ago

5 0

See description in the pic.

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What is the value of x a. 8.125 b .7.25c.6.125 d.3.25

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What's the equation with x? I can't solve it without knowing where to find x....

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3 years ago

Read 2 more answers

Find the mean of this data set: {– 78, -12, 3, – 44}

blagie [28]

Answer:

Answer: A. -32.75

$\dashrightarrow{ \tt{mean = \frac{ \sum f(n)}{n} }} \\$

• f(n) are the values of the set

• n is the number of items

$\dashrightarrow \: { \tt{mean = \frac{ - 78 + ( - 12) + 3 + ( - 44)}{4} }} \\ \\ \dashrightarrow \: { \tt{ \frac{ - 131}{4} }} \\ \\ \dashrightarrow \: { \boxed{ \tt{mean = - 32.75}}}$

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3 years ago

The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between 0 and 8 m

rusak2 [61]

Answer:

0.59375

Step-by-step explanation:

In a uniform distribution the probability that the time t is greater than any given value, X, is:

$P(t\geq X)=1-\frac{X}{b-a}$

In this problem, the limits of the distribution are a = 0 and b = 8 minutes.

For X =3.25 minutes:

$P(t\geq 3.25)=1-\frac{3.25}{8-0} \\P(t\geq 3.25)=0.59375$

The probability that a randomly selected passenger has a waiting time greater than 3.25 minutes is 0.59375.

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3 years ago

In a right triangle the length of a hypotenuse is c and the length of one leg is a, and the length of the other leg is b, what i

nevsk [136]

The Pythagorean theorem tells you ...

... c² = a² + b²

... 13² = 12² + b² . . . . . fill in the given numbers

... 169 - 144 = b² . . . . .subtract 12²

... √25 = b . . . . . . . . . take the square root

... b = 5 . . . . . . The value of b you're looking for.

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The numbers {5, 12, 13} make what is called a "Pythagorean triple" a set of integers that satisfies the relation of the Pythagorean theorem. These, and the triple {3, 4, 5} are often seen in algebra problems. It can be worthwhile to remember these numbers.

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3 years ago

Maggie is trying to find the best deal to buy bags of potato chips. Option A: $0.90 for 9 bags of chips Option B: $0.84 for 7 ba

Ainat [17]

Answer:

The answer is option A. Since you would be paying 0.10 for each bag.

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3 years ago