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3 years ago

The half-life of a radioactive kind of barium is 3 minutes. How much will be left after 6

Mathematics

1 answer:

Alexus [3.1K]3 years ago

7 0

Answer:

20 Grams will be left after 6 minutes.

Step-by-step explanation:

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Given a feedlot of about 1200 cows, if an individual cow produces about 50 liters of manure a day, how many liters of manure wou

Amiraneli [1.4K]

Hello!

First you have to find how many liters of manure is made a day

1 cow makes 50 liters a day

We can do 50 * 1200 to find how many liters the cows make a day

50 * 1200 = 60000

Then you multiply this my how many days are in a month

60000 * 30 = 1800000

The answer is 1,800,000 liters of manure a month

Hope this helps!

3 0

4 years ago

Daniel had 80 more stickers than Elle. He gave 1/4 of his stickers to Elle. She then gave 3/5 of her stickers to Daniel. In the

Pepsi [2]

Answer:

Daniel had 108 stickers at first

Step-by-step explanation:

Number of Daniel's stickers = d

Number of Elle's stickers = e

Since Daniel had 80 more stickers than Elle, d = 80 + e

e = d - 80

Daniel gave 1/4 of his stickers to Elle, Daniel is left with (d - d/4) = 3d/4

Elle now has e + d/4 = d - 80 + d/4 = (5d/4) - 80 = (5d - 320)/4

Elle now gave 3/5 of her remaining stickers to Daniel:

Elle now has:

$e_{new} = \frac{5d -320}{4} - \frac{3}{5} * \frac{5d -320}{4}\\\\e_{new} = \frac{5d -320}{4} - \frac{15d -960}{20}\\\\e_{new} = \frac{25d - 1600 - 15d + 960}{20} \\\\ e_{new} = \frac{10d-640}{20}$

Daniel now has:

$d_{new} = \frac{3d}{4} + \frac{3}{5} (\frac{5d - 320}{4} )\\d_{new} = \frac{3d}{4} + \frac{15d - 960}{20} \\d_{new} = \frac{30d - 960}{20}$

Daniel now had 92 more stickers than Elle

$d_{new} = E_{new} + 92$

$\frac{30d - 960}{20} = \frac{10d - 640}{20} + 92$

Multiply through by 20

30d - 960 = 10d - 640 + 1840

20d = -640 + 1840 + 960

20 d = 2160

d = 2160/20

d = 108

7 0

3 years ago

Someone solve for me please WILL MARK THE BRAINLIEST FOR EXPLANATION !!!!!

Harrizon [31]

The answer to the question

7 0

4 years ago

What is the slope of the line described by the equation below y-9=-2(x-8)

Nady [450]

-2 the slope is the a value ( in this case 2) in the formula y=ax+b. The value before the x is the slope. So for every x value you increase you go down by 2

4 0

4 years ago

Read 2 more answers

5 – 4 + 7x +1 = __x + __<br> Fill in the blanks to get no solutions

Luden [163]

Answer: 7, 2 in order.

Step-by-step explanation:

We can combine like terms.

5 - 4 + 1 = 2.

Therefore, 5 - 4 + 7x +1 = 7x + 2.

Thus, the blanks are 7, 2 in order.

3 0

3 years ago

Read 2 more answers