All categories

3 years ago

Prove that the value of the expression: (125^2+25^2)(5^2–1) is divisible by 39

Mathematics

1 answer:

prisoha [69]3 years ago

4 0

Answer:

(1252+252)(52−1)

=(1252+252)(52+−1)

=(1252)(52)+(1252)(−1)+(252)(52)+(252)(−1)

=390625−15625+15625−625

=390000

divide by 39 is

=10000

You might be interested in

Allen is buying a video game that originally costs $49. He has a 10%-off

Annette [7]

The total amount Allen will need to pay for the video game is $48.96 as 49-0.1+0.06=48.96

7 0

3 years ago

Rewrite the following equations in the form y=mx + b and identify the values of m and b

arlik [135]

You need to put the equations?

5 0

2 years ago

The sum of seven times a number— PLEASE HELP!

castortr0y [4]

Answer:

x = 6

y = 4

Step-by-step explanation:

Let the two numbers be x and y

Condition 1:

7x+3y = 54 -----------(1)

Condition 2:

x = 2+y -----------------(2)

Putting (2) in (1)

=> 7(y+2)+3y = 54

=> 7y+14+3y = 54

=> 10y = 54-14

=> 10y = 40

Dividing both sides by 10

=> y = 4

Now putting y = 4 in eq(2)

=> x = 2+4

=> x = 6

6 0

2 years ago

Read 2 more answers

A cylinder is sliced by a plane that is not parallel to the base

pickupchik [31]

I guess you are asking what is the shape of the cross section.

It will be an ellipse.

4 0

3 years ago

Clive is making hamburgers for a cookout. How many 1/4- pounds hamburgers can he make from 2 and 3/4 pounds of ground beef

marshall27 [118]

Answer:

11 1/4- pounds hamburgers can be made from 2 and 3/4 pounds of ground beef.

Step-by-step explanation:

Here, the amount of beef uses in 1 hamburger = 1/4 pound = 0.25 pounds

Total amount of beef available = 2 3/4 pounds

Now, solving the mixed fraction,we get

$2\frac{3}{4} = 2 + \frac{3}{4} = 2 + 0.75= 2.75$

So, the total available beef = 2.75 pounds

Now, $\textrm{ Number of burgers made} = \frac{\textrm{Weight of available beef}}{\textrm{Beef used in 1 hamburger}}$

= $\frac{2.75}{0.25} = 11$

So, the total number of hamburgers made = 11

Hence, 11 1/4- pounds hamburgers can be made from 2 and 3/4 pounds of ground beef.

3 0

3 years ago