80 is 0.4 of what number?

Answers

Answer 1

Answer: .4=2/5

80=2
X =5

2x=400

X=200

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What does mean, median, mode, and the other word mean

Answers

Mean: add all the numbers and divide by the number of numbers
so if I had 1, 2, 2, 3, 4, I would add all of them together and get 12 then divide 12 by 5 because there are 5 numbers to get a mean of 2.4

Median: the middle number in a set
in the set 1, 2, 2, 3, 4 the median would be 2 as it is in the exact middle of the set of numbers. ***Be careful! For this, the numbers HAVE to be in numerical order so it has to be 1, 2, 2, 3, 4 NOT something like 1, 2, 3, 2, 4

Mode: the number that appears the most in a set
in the example 1, 2, 2, 3, 4 the mode is 2 because 2 appears more than the other numbers

Hope this helped!!

so mean is when you add all the number you have and divide it how many number.

example: 1,4,5.6 if you add all the numbers the answer will be 16 and divide it 4 so you count how many number you have so 16 divide by 4 = 4.

the median is the one that are in the middle . to find it you have to place the number to least to greater and find the median.

Example: 4,6,10.5,3,1,8

so least to greater will be 1,3,4,5,6,8,10. so when you count the median will be 5 because you count 1,3,4 and you count 6,8,10 so the middle is 5.

the mode is the number that occurs most often in the number like this

Example: 1,2,3,3,4,5, so the number that occurs most often is 3 .

Factor quadratic equation 6x.squared +41x + 63 = 0

Answers

Answer:

x1= -9/2 ; x2= -7/3

Step-by-step explanation:

Rewrite to 6x^2 + 27x +14x +63 = 0

Factor and get 3x(2x + 9) + 7(2x + 9) = 0

Factor again and get (2x + 9)(3x + 7) = 0

Separate into possible cases -> 2x + 9 = 0; 3x + 7 = 0

The equation has two solutions: x1 = -9/2 and x2 = -7/3

Hope this helped!!

Find the measures of the angles in ∆ABC if m∠A : m∠B : m∠C = 2:3:4.

Answers

Answer:

A=40, B=60, C=80

Step-by-step explanation:

180/7 to find what "1" would be in the ratio then multiply 20*2, 20*3, 20*4.

Final answer:

The measures of the angles in a triangle with the ratio 2:3:4, namely ∆ABC, are 40°, 60°, and 80° respectively.

Explanation:

To determine the measures of the angles in ∆ABC given that m∠A: m∠B: m∠C = 2:3:4, you first need to understand that the sum of the interior angles in a triangle equals 180°.

We will begin by assigning values to the angles as per the given ratios.

Therefore, we'll say m∠A = 2x, m∠B = 3x, and m∠C = 4x.

Based on the rule that the angles of a triangle add up to 180°, we get the equation 2x + 3x + 4x = 180.

Simplifying that, we get 9x = 180.

To find the value for 'x', divide both sides of the equation by 9. This results to x = 20.

To get the measures of the angles, you then multiply the values of 'x' with the ratios.

Hence, m∠A = 2 * 20 = 40°, m∠B = 3 * 20 = 60°, and m∠C = 4 * 20 = 80°.

Learn more about Triangle Angle Measures here:

brainly.com/question/32057751

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Is 5x a numerical expression or a Algebraic Expression?

Answers

It's an algebraic expression. "x" is a variable and 5 is a constant.

An algebraic expression is a phrase used in math that contains numbers and variables. ( Such as x, or y) It also has operators. ( Multiply, Divide, Add, Subtract.)

A numerical expression is a sentence in math that uses only numbers and operation symbols.

Hope this helps!
~ 231agoad

5x is an algebraic expression because it contains a constant (5) and a variable (x)

Evaluate 54 divided by 6 plus 54