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3 years ago

Find the mean of the number set. 93, 81, 94,78, 89, 92, 94,99

Mathematics

1 answer:

777dan777 [17]3 years ago

8 0

Answer: 90

Step-by-step explanation: The mean of a data set is equal to the

sum of the set of numbers divided by how many numbers are in the set.

So to find the mean of the data set

shown here, begin by adding the numbers.

Adding the numbers, we get 720.

This will be divided by the number of numbers in the set, or 8.

So we have 720/8 or 90.

So the mean of the data set shown here is 90.

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2. Simplify 3x (x-5) 2x - 3 - where x = 0 and x* 5. 3x

Diano4ka-milaya [45]

Answer:

(x-5)

2x - 3= 3x,x-5,2x-3

Step-by-step explanation:

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3 years ago

A hot air balloon hovers above its launch site at an altitude of 100 meters. The pilot of the balloon sights a parking lot at a

IgorLugansk [536]

Answer:

The horizontal distance between the parking lot and the launch site is 470 meters

Step-by-step explanation:

Let

x-----> the horizontal distance between the parking lot and the launch site

we know that

The tangent of angle of 12 degrees is equal to divide the altitude of 100 meters by the horizontal distance

tan(12°)=100/x

Solve for x

x=100/tan(12°)=470 meters

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3 years ago

What is the value of the function when x = 2? x −4 −2 0 2 4 y 3 4 2 6 7

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Where is the function?

8 0

3 years ago

Find the missing side of the triangle

Ivanshal [37]

Answer:

25 in

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Trigonometry

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

a is a leg
b is another leg
c is the hypotenuse

Step-by-step explanation:

Step 1: Identify

Leg a = 24

Leg b = 7 in

Leg c = x

Step 2: Solve for x

Substitute in variables [Pythagorean Theorem]: 24² + 7² = x²
Evaluate exponents: 576 + 49 = x²
Add: 625 = x²
[Equality Property] Square root both sides: 25 = x
Rewrite/Rearrange: x = 25

8 0

3 years ago

Which of the following is equivalent to cos x?

Otrada [13]

ANSWER

D) sin Y

EXPLANATION

The given triangle is a right triangle.

This implies that that:

$x + y = 90 \degree$

Then we have

$y= 90 - x$

Recall that

$\cos(x) = \sin(90 - x)$

But

$90 - x = y$

When we do the substitution, we get,

$\cos(x) = \sin(y)$

Therefore cos(x) is a equivalent to sin(y).

The correct answer is D.

3 0

3 years ago