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IceJOKER [234]
3 years ago
14

Evaluate 6t - 20-32u when t = 6 and u = 1/5

Mathematics
2 answers:
Papessa [141]3 years ago
7 0

Answer:

48/5

Step-by-step explanation:

6t - 20-32u

Let t= 6 and u = 1/5

6*6 - 20 -32(1/5)

Multiply

36 -20 -32/5

16 - 32/5

Get a common denominator

80/5  -32/5

48/5

RoseWind [281]3 years ago
7 0

Answer:

48/5= 9 4/5

Step-by-step explanation:

first substitute the variable

6(6)-20-32(1/5)

36-20-32/5

16-32/5

get the both numbers to have the same denominator

16 times 5/5= 80/5

now subtract the both numbers

80/5-32/5= 48/5

48/5= 9 4/5

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Im really confused can somebody explain this?
vovikov84 [41]

<u>Given</u>:

The given ratio is 16 : 12

We need to determine three ratios that are equivalent to the given ratio.

<u>Option A</u>: 8:6

The given ratio is 16 : 12

Let us divide the given ratio 16 : 12 by 2.

Thus, we have;

8:6

Hence, the expression 8:6 is equivalent to 16 : 12

Thus, Option A is the correct answer.

<u>Option B</u>: 32:24

The number 32 goes by 16 in 2 times and the number 24 goes by 12 in 2 times.

Thus, multiplying the ratio 16 : 12 by 2, we get;

32:24

Thus, the expression 32:24 is equivalent to 16 : 12

Hence, Option B is the correct answer.

<u>Option C</u>: 4:3

Let us divide the given ratio 16 : 12 by 4.

Thus, we have;

4:3

Thus, the expression 4:3 is equivalent to 16 : 12

Hence, Option C is the correct answer.

<u>Option D</u>: 12:8

The number 12 goes by 16 in \frac{3}{4} times and the number 8 goes by 12 in \frac{2}{3} times.

The ratios are multiplied by different numbers.

Thus, the expression 12:8 is not equivalent to 16 : 12

Hence, Option D is not the correct answer.

<u>Option E</u>: 24:16

The number 24 goes by 16 in 1.5 times and the number 16 goes by 12 in 0.75 times.

The ratios are multiplied by different numbers.

Thus, the expression 24:16 is not equivalent to 16 : 12

Hence, Option E is not the correct answer.

Therefore, the equivalent ratios are Option A, B and C

5 0
3 years ago
A teacher keeps track of the number of students that participate at least three times in an optional study session each year. He
Anastasy [175]

Answer:

It is not C got it wrong.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Which of the following statements describes a correct method for solving this equation?4x+6=8x
nekit [7.7K]
D.its the most logical answer
4 0
3 years ago
In one day, Annie traveled 5 times The sum of the numbers of hours Brian traveled and two. Together they traveled 20 hours. Find
grigory [225]

5B + B = 20

6B = 20

B = 20 / 6  

= 10/ 3 hrs

A = 5 ( 10/3 + 2)

 = 5 (16/3)

 = 80 / 3 hrs  

 Brian traveled 10/3 hours and Annie traveled 80/3 hours.

6 0
3 years ago
You are randomly selecting 3 cans of regular and diet cola, but assume that there are 6 cans of regular cola and 7 cans of diet
gayaneshka [121]

Answer:0.367

Step-by-step explanation:

Given

There are 6 cans of regular and 7 cans of diet cola

number of ways of selecting 2 regular colas and 1 can of diet cola is

\Rightarrow ^6C_2\times ^7C_1

The total no of ways of selecting 3 items out of 13 items is

\Rightarrow ^{13}C_3

Probability is

\Rightarrow P=\dfrac{^6C_2\times ^7C_1}{^{13}C_3}=\dfrac{105}{286}\\\Rightarrow P=0.367

6 0
3 years ago
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