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3 years ago

5

Aluminum gold is 22% aluminum; the rest is gold. If aluminum gold bar contains 55g of aluminum, how many grams of gold does it c

ontain?????

1 answer:

Katarina [22]3 years ago

7 0

195 grams 55/250=.22% 250-55=195g gold

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Ellie is numbering her 150 pages scrapbook. how many times will she write the digit 4?

Oksi-84 [34.3K]

Answer:

33

Step-by-step explanation:

4,14,24,34,40,41,42,43,44,45,46,47,48,49,54,64,74,84,94,

104,114,124,134,140,141,142,143,144,145,146,147,148,149

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2 years ago

What is 3.14 times 20 time 1/2

ira [324]

Answer:

31.4

Step-by-step explanation:

So a really easy way to solve this is as goes

--> 3.14 x (20 x 1/2)

--> 3.14 x (10)

Now multipling by 10 is just moving the deciaml place one spot to the right

=> thus, we get 31.4

Hope this helps!

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3 years ago

Find the area of the circle below. Use 3.14 for pi

djverab [1.8K]

Answer:

Es igual a 28,26 centímetros2.

Step-by-step explanation:

7 0

2 years ago

Help help please i will mark u brill

Roman55 [17]

Answer:

Step-by-step explanation:

u/4 + 9.9 = 16.9

Putting value of u = 24 in the equation

24/4 + 9.9 = 16.9

6 + 9.9 = 16.9

15.9 = 16.9

Bringing like terms on one

16.9 - 15.9 = 1

7 0

3 years ago

Read 2 more answers

Prove that the product of any two consecutive natural numbers is even.

Vitek1552 [10]

Answer with Step-by-step explanation:

Let us assume the 2 consecutive natural numbers are 'n' and 'n+1'

Thus the product of the 2 numbers is given by

$Product=n(n+1)\\\\$

We know that the sum of 'n' consecutive natural numbers starting from 1 is

$S_n=\frac{n(n+1)}{2}\\\\\therefore n(n+1)=2\times S_n............(i)$

Thus from equation 'i' we can write

$Product=2\times S_n$

As we know that any number multiplied by 2 is even thus we conclude that the product of 2 consecutive numbers is even.

6 0

3 years ago