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devlian [24]
3 years ago
14

4/5-1/2 answer my question

Mathematics
2 answers:
vlabodo [156]3 years ago
7 0
4/5 - 1/2 =

3/10 in exact form

0.3 in decimal form

When subtracting a fraction, you always have to make sure your denominator/divisor's are the same.

Therefore you would find the Least Common Multiple of 5 and 2

Both would eventually come to 10, multiplying 4/5 by 2 on both the numerator and the denominator

Do the same with 1/2 except you multiply this one by 5 on both the numerator and the denominator.

Your fractions would then be  8/10 and 5/10

Then you subtract

8/10 - 5/10 = 3/10

(The Denominator does not change after all this)

Hope this helps :)

asambeis [7]3 years ago
6 0
3/10 you cross multiply 5x2=10 so the denominator will be 10 and then cross multiply the numberators by the different denominator make sense? so 5x 1=5 and that mean 1/2=5/10 and 4/5=8/10 and the final answer when u subtract is 3/10 makes sense? u know what i mean jelly bean?
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0.7 of what number is 4 1/2?​
hjlf

Answer:

x = 45/7

Step-by-step explanation:

Write as an algebraic equation.

Look at each part in the word question : 0.7 of what number is 4 1/2

"0.7 of what number" can be written as 0.7x

The word "is" means equals.

0.7x = 4 1/2     <= The equation, using 'x' to represent the number.

To find the number, isolate 'x'.

0.7x = 4\frac{1}{2}    Convert mixed fraction to improper fraction

0.7x = \frac{(4*2)+1}{2}     Multiply the whole number by the denominator and add it to the numerator

0.7x = \frac{9}{2}     Now isolate 'x'

0.7x/0.7 = \frac{9}{2}/0.7     Divide both sides by 0.7

x = \frac{9}{2}/0.7     Simplify right side

x = \frac{9}{2}/\frac{7}{10}     Rewrite 0.7 as a fraction

x = \frac{9}{2}*\frac{10}{7}     To divide, you multiply a flipped fraction

x = \frac{9*10}{2*7}     Multiply across the top and across the bottom

x = 90/14      Reduce to lowest terms. Top and bottom are divisible by 2

x = 45/7        Answer

5 0
3 years ago
What is the product?<br><br><br><br> (2x-1)(x+4)
MissTica

Answer:

2x² + 7x - 4

Step-by-step explanation:

(2x-1)(x+4)

= (2x)(x) + (2x)(4) + (-1)(x) + (-1)(4)

=2x² + 8x - x -4

=2x² + 7x - 4

4 0
3 years ago
How do I simplify 355/10
VMariaS [17]

Answer:

the answer is 71/2

Step-by-step explanation:

6 0
3 years ago
The number of violent crimes committed in a day possesses a distribution with a mean of 2.3 crimes per day and a standard deviat
marusya05 [52]

Answer:

B) approximately normal with mean 2.3 and standard deviation 2

Step-by-step explanation:

Given the following :

Mean crimes per day = 2.3

Standard deviation = 2

Number of samples = 100

Sampling distribution of the mean:

According to the central limit theorem:

Sample mean = population mean

2.3 = 2.3

The standard deviation of the sample (s) : ratio of the population standard deviation and square root of the sample size.

s = population standard deviation / √sample size

s = 2 / √100

s = 2 / 10

s = 0.2

The central limit theorem also posits that once ths sample size is large enough, the sampling of the sample mean will be approximately normal.

Hence, the distribution is approximately normal, with mean of 2.3 and standard deviation of 0.2

7 0
3 years ago
I roll a standard six-sided die 6 times in a row. What is the probability that the numbers
ioda
I think 50% or 1/2 ( it’s the same just one is in fraction and other in percentage)
7 0
3 years ago
Read 2 more answers
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