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2 years ago

Find the difference.

Mathematics

2 answers:

sukhopar [10]2 years ago

6 0

Answer:

-2x-4

Step-by-step explanation:

(-7x-7y-4)-(-5x-7y)=-7x-7y-4+5x+7y=-7x-4+5x=-2x-4

adoni [48]2 years ago

6 0

Answer:

-2x - 4

Step-by-step explanation:

(- 7x - 7y - 4) - (-5x - 7y) Remove both sets of brackets
-7x - 7y - 4 + 5x + 7y Notice the sign change in 6x and 7y Two minus signs multiplied together make a plus. Gather like terms.
-7x + 5x - 7y + 7y - 4 Simplify
-2x - 4 Note the ys cancel out.

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Of the total number of pages in a book, 62% have pictures and the rest have no pictures. There are 310 pages with pictures in th

nasty-shy [4]

Answer:

500 total pages. 190 pages with no pictures.

Step-by-step explanation:

310 is 0.62 of the total pages. 310 divided bye 0.62 is 500.

500 minus 310 is 190 pages with no pictures.

Hope this helps!

3 0

2 years ago

A box contains 35 gems, of which 10 are real diamonds and 25 are fake diamonds. Gems are randomly taken out of the box, one at a

USPshnik [31]

Answer:

$Probability = 0.504$

Step-by-step explanation:

Given

$Gems= 35$

$Real = 10$

$Fake = 25$

Required

Determine the probability of selecting two fakes

The probability can be represented as thus: $P(Fake\ and\ Fake)$

Using the following probability formula, we have:

$P(Fake\ and\ Fake) = P(Fake) * P(Fake)$

Each probability is calculated by dividing number of fakes by total number of gems:

$P(Fake\ and\ Fake) = \frac{25}{35} * \frac{25-1}{35-1}$

The minus 1 (-1) represent the numbers of fake and total gems left after the first selection

$P(Fake\ and\ Fake) = \frac{25}{35} * \frac{24}{34}$

$P(Fake\ and\ Fake) = \frac{5}{7} * \frac{12}{17}$

$P(Fake\ and\ Fake) = \frac{60}{119}$

$P(Fake\ and\ Fake) = 0.504$

<em>Hence, the required probability is approximately 0.504</em>

7 0

2 years ago

Someone pls pls pls solve this!!!!!!! And pls explain how u solved it. I need this due rn ASAP!!!

Anni [7]

Answer:

What's the question? Please post the full question

5 0

2 years ago

Read 2 more answers

Half of the sum of nine and p is the same as p minus three

Nataly_w [17]

Answer:

3÷(9+p)=p-3

Step-by-step explanation:

use the distributive property

7 0

2 years ago

Calculate- (with work pleasee) i really need it !!<br> -0.2(x-20)=44-x

erica [24]

Answer:

x=50

Step-by-step explanation:

-0.2(x-20)=44-x

Distribute

-0.2x+4=44-x

Add x to each side

-.2x +4+x = 44-x+x

.8x+4 = 44

Subtract 4 from each side

.8x+4-4 = 44-4

.8x = 40

Divide each side by .8

.8x/.8 = 40/.8

x=50

7 0

1 year ago