All categories

3 years ago

What is 7/8 - 4/5 = what is 7/8 - 4/5

Mathematics

2 answers:

s344n2d4d5 [400]3 years ago

6 0

The answer is 3/40 7-4

monitta3 years ago

3 0

First find common denominators and do the same to the numerators.

4/5 = 32/40
7/8 = 35/40

35/40 - 32/40 = 3/40

You might be interested in

Find f^-1(x) A B C D

inna [77]

Answer:

D. f⁻¹(x) = 2x + 10

Explanation:

The given is:

$f(x) = \frac{1}{2}x - 5$

To find the inverse, follow the below procedures:

1- Convert f(x) to y.

This will give:

$y = \frac{1}{2} x - 5$

2- Swap the x and y variables.

This will give:

$x = \frac{1}{2}y - 5$

3- Solve for y.

This will give:

$x = \frac{1}{2}y - 5\\ \\ \frac{1}{2}y = x+5\\ \\ y = 2x+10$

4- Replace the y in the above step with f⁻¹(x).

This will give us:

f⁻¹(x) = 2x + 10

Hope this helps :)

8 0

3 years ago

Read 2 more answers

In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be su

prisoha [69]

Answer:

1568

Step-by-step explanation:

The computation of the minimum sample size is shown below:

Given that

Error E = 11

The population standard deviation $\sigma$ =217

Confidence level 1-α = 95%

Now following formula should be used

n > (Zalpha ÷ 2 × sigma ÷ E)^2

As we know that

Zalpha ÷ 2= 1.96

Now the sample size is

n> (1.96 × 202 ÷ 10)^2

= 1568

6 0

3 years ago

How many different arrangements are there of the letters a, b, c, d, e, f for which e is not last in line?

Olegator [25]

Hmm, there are 5 letters

if you cannot repeat the letters
hmm, let's find how many for 4 letters
there are 4! or 4*3*2*1=24
that's how many ways there are to arrange a,b,c, d
now we can multiply it by 4 because there are 4 choices for the last place (e is not included0
24*4=56
answer is 56 different arrangements

6 0

3 years ago

Solve the inequality p/5 < -3

Tema [17]

Answer:

p < - 15

Step-by-step explanation:

Given

$\frac{p}{5}$ < - 3 ( multiply both sides by 5 to clear the fraction )

p < - 15

8 0

2 years ago

Read 2 more answers

A principal of $835 is invested in an account at 4% per quarter simple interest which of the following sequences describes the d

netineya [11]

To solve the question we use the compound interest formula which is given by:
A=p(1+r)^(nt)
where:
A=future value
p=principle
r=rate
n=number of terms
t=time
thus plugging in the values in the formula we shall have:
A=835(1+0.04)^(4t)
simplifying this we get the sequence:
A=835(1.040)^(4t)
Thus the answer to the sequence will be:
A=835(1.040)^(4t)

7 0

3 years ago