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3 years ago

Find the equivalent ratio of 15/5 and 45/15?

Mathematics

1 answer:

mixer [17]3 years ago

4 0

1. 3 0/5

2. 3 0/15

These are your answers

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Write an algebraic expression that represents 2 less than 18 times a number?

german

Answer:

Step-by-step explanation:

18x-2

3 0

3 years ago

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Simplify completely****

andreyandreev [35.5K]

Answer:

$\displaystyle \frac{x + 7}{3}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Terms/Coefficients
Factoring

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{x^2 + 12x + 35}{3x + 15}$

Step 2: Simplify

[Fraction] Factor numerator: $\displaystyle \frac{(x + 5)(x + 7)}{3x + 15}$
[Fraction] Factor denominator: $\displaystyle \frac{(x + 5)(x + 7)}{3(x + 5)}$
[Fraction] Divide: $\displaystyle \frac{x + 7}{3}$

4 0

3 years ago

Please Help

Sunny_sXe [5.5K]

Joel read the greatest number of pages in a day.

Armando read (46×.15) 6.9 pages.
Billy read (72×.11) 7.92 pages.
Robert read (68×.12) 8.16 pages.
Joel read (69×.14) 9.66 pages.

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3 years ago

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A researcher wants to estimate the mean commute time of residents in Westchester County. The researcher samples 40 commuters and

Ksenya-84 [330]

Answer:

21.759

Step-by-step explanation:

Given that :

Mean (m) = 25

Standard deviation (s) = 12.5

Sample size (n) = 40

α = 90%

The confidence interval is obtained using the relation:

Mean ± Zcritical * s/sqrt(n)

Zcritical at 90% confidence interval = 1.64

25 ± 1.64 * (12.5/sqrt(40))

Lower boundary : 25 - 1.64(1.9764235) = 21.75866546

Upper boundary : 25 + 1.64(1.9764235) = 28.24133454

(21.759, 28.241)

Hence, lower bound of confidence interval is : 21.759

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3 years ago

Find three different ratios that are equivalent to ratio 3 : 11

Mnenie [13.5K]

Answer:

6:22

9:33

12:44

Step-by-step explanation:

Giben ratio 3:11

Multiplying by 2,

6:22

Multiplying by 3

9:33

Multiplying by 4

12:44

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3 years ago