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zaharov [31]
4 years ago
15

How can 9+3 =12 help you solve 12-9?

Mathematics
2 answers:
Dovator [93]4 years ago
7 0
9+3=12, 12-9=3, since those three numbers are in the first equation.
d1i1m1o1n [39]4 years ago
3 0
Well you know that 9+3=12 so you can reverse it and do 12-9=3 .Because 3 is the only one left in the equation of 9+3=12.
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Of the people who prefer mocha, the relative frequency of them preferring it cold is
WITCHER [35]

Answer

1) Relative frequency of prefering cold mocha amongst mocha drinkers = 0.32

2) Relative frequency of prefering a latte amongst hot coffee drinkers = 0.22

3) Type of coffee that has the highest percentage of people who prefer it cold = Regular

Explanation

1) Relative frequency of prefering cold mocha amongst mocha drinkers is given as

Relative frequency

= (Number of mocha drinkers who prefer it cold) ÷ (Total number of mocha drinkers)

Number of mocha drinkers who prefer it cold = 12

Total number of mocha drinkers = 12 + 25 = 37

Relative frequency = 12 ÷ 37 = 0.32

2) Relative frequency of prefering a latte amongst hot coffee drinkers is given as

Relative frequency

= (Number of latte drinkers who prefer it hot) ÷ (Total number of hot coffee drinkers)

Number of latte drinkers who prefer it hot = 19

Total number of hot coffee drinkers = 11 + 25 + 19 + 30 = 85

Relative frequency = (19/85) = 0.22

3) Percentage of people who prefer cold coffee for each coffee type

Regular

(17/28) = 60.7%

Mocha

(12/37) = 32.4%

Latte

(20/39) = 51.3%

Cappuccino

(27/57) = 47.4%

Regular coffee drinkers have the highest percentage of drinkers who prefer it cold.

Hope this Helps!!!

7 0
1 year ago
Solve the equation.<br> 3x^2+4x+5=0
Daniel [21]

<em>Use the Quadratic Formula </em>

x = -4 + 2 √11i/6, -4 - 2√11i/6

<em>Simplify solutions </em>

x = - 2 - √11i/3, - 2 + √11i/3

5 0
3 years ago
Simplify 500 to the nearest common factor
irina1246 [14]

Answer:

1/2

Step-by-step explanation:

Factor both the numerator and denominator down to prime factors:

500 = 22 * 53

1,000 = 23 * 53

Calculate the greatest common factor, GCF (also called greatest common divisor, GCD), by taking all the common prime factors of the numerator and denominator, by the lowest exponents:

gcd (22 * 53; 23 * 53) = 22 * 53

Divide both the numerator and denominator by their greatest common factor, GCF (also called the greatest common divisor, GCD):

500/1,000 =

(22 * 53)/(23 * 53) =

((22 * 53) ÷ (22 * 53)) / ((23 * 53) ÷ (22 * 53)) =

1/2

Rewrite result:

1 ÷ 2 = 0.5 as a decimal number.

Hope this helps!!

7 0
3 years ago
Declan needs euros to go on holiday. He can buy 46 euros for £40. How much will 805 euros cost at the same rate?
kobusy [5.1K]

Answer:

700 pounds

Step-by-step explanation:

if 46 euros cost 40 pounds

then 805 euros will cost 805 multiplied 40

whatever answer you get divide it by 46

6 0
4 years ago
Which is the most appropriate unit to measure the length of a slice of pizza?
Ne4ueva [31]
A centimetre is the most appropriate unit
6 0
4 years ago
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