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4 years ago

Rewrite with the LCD

Mathematics

1 answer:

anygoal [31]4 years ago

6 0

1/4 + 3/8

Rewrite with the LCD (lowest common denominator)

Remember : the denominator is just the bottom number on a fraction.

Let's look at both of our given fractions denominator's.

4 & 8 → What do both of these numbers have in common? They both go into 8!

How many times does 4 go into 8? → Twice

How many times does 8 go into 8? → Once

So, because of that, we must multiply the top number (numerator) of each fraction with either one, or two.

First fraction : 1/4 × 2/2 =2/8 → So, our first fraction changes.

Second fraction : 3/8 × 1/1 = 3/8 → However, our second fraction changes.

So, our new question looks like this : 2/8 + 3/8

If you wanted us to answer this question, we simply need to add the top numbers (numerators) with one another because both fractions have the same bottom numbers (denominators).

2 + 3 = 5

So, our answer is 5/8 and our question rewritten with the LCD is : 2/8 + 3/8

~Hope I helped!~

You might be interested in

Translate into an algebraic expression: n−1 increased by 110%

lorasvet [3.4K]

Answer:

Part 1) The algebraic expression is equal to $1.10(n-1)$ or $1.10n-1.10$

Part 2) The algebraic expression is equal to $\frac{1.10}{n}$

Step-by-step explanation:

Part 1) we have (n-1) increased by 110%

110%=110/100=1.10

The algebraic expression of (n-1) increased by 110% is equal to multiply 1.10 by (n-1)

$1.10(n-1)$

Distributed

$1.10n-1.10$

Part 2) we have n^(-1) increased by 110%

110%=110/100=1.10

The algebraic expression of n^(-1) increased by 110% is equal to multiply 1.10 by n^(-1)

Remember that

$n^{-1}=\frac{1}{n}$

$1.10(n^{-1})=1.10\frac{1}{n}=\frac{1.10}{n}$

4 0

4 years ago

Does anyone get this?? Pls help!!

Molodets [167]

Answer:no

Step-by-step explanation:

5 0

3 years ago

What percent of 8 is 4

HACTEHA [7]

4 = amount

8 = base 

amount / base = percent 

4 / 8 = 0.50 

multiply 100 times the decimal and attact he % symbol 

100 x 0.5 = 50 % 

4 is 50% of 8

5 0

3 years ago

What is numeracy and why is it important to everyone life

timurjin [86]

Answer:

Step-by-step explanation:

Numeracy involves skills that aren't always taught in the classroom – the ability to use numbers and solve problems in real life. It means having the confidence and skill to use numbers and mathematical approaches in all aspects of life. Numeracy is as important as literacy.

4 0

3 years ago

A boat traveled 147 miles downstream and back. The trip downstream took 7 hours. The trip back took 21 hours. What is the speed

zimovet [89]

Answer:

The speed of current is 7 miles per hour

Step-by-step explanation:

Given as :

The distance cover by boat in downstream = D = 147 miles

The distance cover by boat in upstream = d = 147 miles

The time taken in downstream trip = T = 7 hours

The time taken in upstream trip = t = 21 hours

Let The speed of boat in still water = x mi/h

And The speed of current = y mi/h

The speed in downstream = S = (x + y) mi/h

The speed in upstream = s = (x - y) mi/h

Now, According to question

∵ Distance = speed × time

For downstream

D = S × T

Or, 147 miles = (x + y) mi/h × 7 hours

i.e 7 (x + y) = 147

Or, x + y = $\dfrac{147}{7}$

∴ x + y = 21 ........A

For upstream

d = s × t

Or, 147 miles = (x - y) mi/h × 21 hours

i.e 21 (x - y) = 147

Or, x - y = $\dfrac{147}{21}$

∴ x - y = 7 .......B

Now, Solving equations A and B

So, (x + y) + (x - y) = 21 + 7

Or, (x + x) + (y - y) = 28

Or, 2 x + 0 = 28

∴ x = $\dfrac{28}{2}$

i.e x = 14 miles per hour

The speed of boat in still water = x = 14 mi/h

Now, putting the value of x into eq B

So, y = x - 7

Or, y = 14 - 7

i.e y = 7 miles per hour

The speed of current = y = 7 mi/h

Hence, The speed of current is 7 miles per hour . Answer

7 0

3 years ago