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3 years ago

Yvonne ran up 1/4 of the total flights of staris in an office building and walked up the rest of she

1 answer:

3 0

Yvonne ran up 12 flights of stairs.

Explanation:
Understand the situation:

Yvonne ran up 1/4 of the total stairs. Afterwards, she walked the REST of the stairs, which is said to be 9 STAIRS. HOW MANY flights of stairs IN TOTAL did she run up?

When she ran the REST of the stairs, it meant she ran the other 3/4 of stairs because:
1 - 1/4 = 3/4

To add someting, that means that the 9 stairs is 3/4 of the total stairs, so lets fins the total stairs using this information:
9 ÷ 3/4 = 12

LETS CHECK IF 9 IS REALLY 3/4 of 12:
12 x 3/4 = 9

HOPE THIS HELPS
-SpaceMarsh

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What number is the opposite of -3? Explain your reasoning

Troyanec [42]

The answer is 3

Answer Explanation:

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3 years ago

1) The probability that an individual is left-handed is 12%. In a randomly selected class of 30 students, what is the probabilit

svlad2 [7]

Answer:

0.2047

0.2377

Step-by-step explanation:

What we have here is a binomial distribution

Probability p = 0.12

N = number of students in the class = 30

Probability of finding 4 left handers

P(x = 4) = 30C4 x (0.12)⁴ x (0.88)²⁶

= 27405 x 0.00020736 x 0.03602047835

= 0.2047

This is also a binomial distribution

N = 10 p = 0.65

P(of 6 knowledgeable fans)

= 10C6 x (0.65)⁶ x (0.35)⁴

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3 years ago

Solve the system of equations below by graphing both equations with a pencil and paper. What is the solution? y = x+1 1 X+ 3 2.

Troyanec [42]

Answer:

D. (4, 5)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Algebra I

Solving systems of equations using substitution/elimination
Solving systems of equations by graphing

Step-by-step explanation:

Step 1: Define systems

y = x + 1

y = 1/2x + 3

Step 2: Solve for x

Substitute in y: x + 1 = 1/2x + 3
Subtract 1/2x on both sides: 1/2x + 1 = 3
Subtract 1 on both sides: 1/2x = 2
Divide both sides by 1/2: x = 4

Step 3: Solve for y

Define original equation: y = x + 1
Substitute in x: y = 4 + 1
Add: y = 5

Step 4: Graph

We can confirm our answer.

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3 years ago

Which of the following factors could explain why Dellva Energy had a negative net cash flow last year, even though the cash on i

Dvinal [7]

Answer:

The company sold a new issue of bonds.

Step-by-step explanation:

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3 years ago

Opposite of-(-65) integer

kolezko [41]

Answer:

+65

Step-by-step explanation:

If you distribute negative with negative it gives you positive

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3 years ago