All categories

2 years ago

If a/4 = b/7, what is the value of (a-b) / b?

Mathematics

2 answers:

DerKrebs [107]2 years ago

8 0

First we will find out the values of a
a/4=b/7
a=4b/7

Now
(a-b)/b
{4b/7-b}/b
(4b-7b)/7b
-3b/7b
-3/7

borishaifa [10]2 years ago

8 0

Answer:

-3/7

Step-by-step explanation:

a/4=b/7

a/b=4/7

(a-b)/b=(3-7)/7

(a-b)/b=-3/7

You might be interested in

8 = 4 - 2x - 2x +5 = 17 12= - 3 ( x+ 5)

max2010maxim [7]

$8 = 4 - 2x\\8 + 2x = 4\\2x = -4\\x = -2$

$- 2x +5 = 17\\-2x =12\\x = -6$

$12= - 3 ( x+ 5)\\12 = -3x -15\\-3x =27\\x= -9$

5 0

2 years ago

Ms. Bell's mathematics class consists of 12 sophomores, 8 juniors, and 9 seniors. How many different ways can Ms. Bell create a

shtirl [24]

Answer:

792

Step-by-step explanation:

It's a combination question. The order is of no consequence. Also the fact that there are juniors and seniors is not important either.

So the answer is

12C5

12!

====

(12 - 5)! * 5!

12 * 11 * 10 * 9 * 8

==============

5 * 4 * 3 * 2 * 1

792

7 0

2 years ago

Max has two cats. Rex and Roman. If Rex weighs 11 7/18 pounds and Roman weighs 11.329 pounds, which cat weighs the most?

Vinvika [58]

Answer: Rex weighs more.

Step-by-step explanation:

You have to change both of the numbers into the same form. I did decimal form.

Rex - 11 7/18 = 11.389 (rounded to the hundredths)

Roman - 11.329

Rex is bigger.

Hope this helps!

8 0

2 years ago

What is the value of tan M?

ludmilkaskok [199]

Hi there! The answer is 15/8.

The general formula for the tangent is
$\tan(m) = \frac{opposite}{adjecent}$

When we fill in the data from the picture, we get the following:
$\tan(m) = \frac{15}{8}$

4 0

2 years ago

Find the area of the shaded region.

Sindrei [870]

Answer:

5x^2+28x+21

Step-by-step explanation:

First you want to find the area of the white rectangle
Then find the area of the beings rectangle
Then subtract beings minus white.

Hope it answers your question:)

5 0

2 years ago