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3 years ago

Please solve and explain, thanks!! :))

Mathematics

2 answers:

pantera1 [17]3 years ago

6 0

Answer:

B. 8x + 12

Step-by-step explanation:

First you'd start with the parentheses because of PEDMAS. But because you can't do anything in there, you go to multiplying 4 by each item inside the parentheses. 4x2x gives 8x. 4x3 gives 12. Leaving you with 8x+12. Hope that helps! :)

Naddika [18.5K]3 years ago

4 0

Answer:

Step-by-step explanation:

Its B because you distribute each term inside the parenthesis by the number out side

4×2x= 8x

4×3= 12

Get rid of the parenthesis after distributing

which makes 8x+12

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Which expression is equivalent to 2*3 / 2^6

Nookie1986 [14]

Answer:

$\frac{3}{32}$

Step-by-step explanation:

$\frac{2*3}{2^6} \\\\\frac{6}{64} \\\\\frac{3}{32}$

6 0

3 years ago

16. How many liters of a 60% alcohol solution must be added to 60 liters of a 30% alcohol

Nezavi [6.7K]

Step-by-step explanation:

Step 1: Question statement and Inferences

Let x liters of the 60% solution be added.

So, amount of Alcohol in this solution = 60% of x = 0.6x L

Now, let us consider the 40% solution.

The total volume of this solution is 50 L

So, amount of Alcohol in this solution = 40% of 50

Step 2: Finding required values

When x L of 60% solution are mixed with 50 L of the 40% solution, the total volume of the resultant solution will be (50+x) L

By the Law of Conservation of Mass,

Amount of alcohol in the input solutions = Amount of alcohol in the final solution

=> Amount of alcohol in the final solution = 20 + 0.6x

So, concentration of Alcohol in the final solution

Step 3: Calculating the final answer

It is given that the concentration of alcohol in the final solution is 50%

8 0

3 years ago

Read 2 more answers

Is the given number a solution to the equation?<br><br>-9x - 8 = -37.16 if x = 3.24

ludmilkaskok [199]

Answer:

yes it is

Step-by-step explanation:

$(- 9 \times 3.24) - 8 = - 29.16 - 8 = - 37.16$

4 0

3 years ago

[ 2 ( 7 . 25 ) + 2 ( 24 )] - 10

Mekhanik [1.2K]

Answer: 57 over 2

=28 and 1 over 228

=28.5

Result57 over 2 equals 28 and 1 over 2 equals 28.5

Step by step

Step 1 of 4: Multiply.

Multiply

( Highlighted:2 Highlighted:× Highlighted:7.25 + 24 ) − 10 = ( Highlighted:1450 over 100

1450

100

+ 24 ) − 10

Step 1 of 4: Multiply, sub-step a: Multiply.

Multiply

725 over 100

725

100

× 2 = ( 725 × 2 ) over 100

725 × 2

100

= 1450 over 100

1450

100

Step 1 of 4: Multiply.Hide

Step 2 of 4: Add.

Add

( Highlighted:1450 over 100

1450

100

Highlighted:+ Highlighted:24 ) − 10 = ( Highlighted:3850 over 100

3850

100

) − 10

Step 2 of 4: Add, sub-step a: Convert integer to fraction.

Convert integer to fraction

24 = 24 over 1

Step 2 of 4: Add, sub-step b: Find common denominator.

Find common denominator

1450 over 100

1450

100

+ 24 over 1

= ( 1450 × 1 ) over ( 100 × 1 )

1450 × 1

100 × 1

+ ( 24 × 100 ) over ( 1 × 100 )

24 × 100

1 × 100

= 1450 over 100

1450

100

+ 2400 over 100

2400

100

100 is the least common multiple of denominators 100 and 1. Use it to convert to equivalent fractions with this common denominator.

Step 2 of 4: Add, sub-step c: Add.

Add

1450 over 100

1450

100

+ 2400 over 100

2400

100

= ( 1450 + 2400 ) over 100

1450 + 2400

100

= 3850 over 100

3850

100

Step 2 of 4: Add.Hide

Step 3 of 4: Subtract.

Subtract

3850 over 100

3850

100

− 10 = 2850 over 100

2850

100

Step 3 of 4: Subtract, sub-step a: Convert integer to fraction.

Convert integer to fraction

10 = 10 over 1

Step 3 of 4: Subtract, sub-step b: Find common denominator.

Find common denominator

3850 over 100

3850

100

− 10 over 1

= ( 3850 × 1 ) over ( 100 × 1 )

3850 × 1

100 × 1

− ( 10 × 100 ) over ( 1 × 100 )

10 × 100

1 × 100

= 3850 over 100

3850

100

− 1000 over 100

1000

100

100 is the least common multiple of denominators 100 and 1. Use it to convert to equivalent fractions with this common denominator.

Step 3 of 4: Subtract, sub-step c: Subtract.

Subtract

3850 over 100

3850

100

− 1000 over 100

1000

100

= ( 3850 − 1000 ) over 100

3850 − 1000

100

= 2850 over 100

2850

100

Step 3 of 4: Subtract.Hide

Step 4 of 4: Simplify.

Simplify

2850 over 100

2850

100

= 57 over 2

= 28 and 1 over 228

Step-by-step explanation:

7 0

3 years ago

What is 77.5 as a fraction?

butalik [34]

77.5 would convert to 77 1/2. You have 77 whole pieces, and then a half. You could put any fraction for the half part, as long as it is HALF.
For example, you could also do:
77 5/10
77 6/12
77 2/4
77 10/20

3 0

3 years ago