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AlexFokin [52]
3 years ago
10

The sum of Jack and Jill's ages is 84. If Jill is twenty times

Mathematics
1 answer:
9966 [12]3 years ago
7 0

Answer:

4.2

Step-by-step explanation:

84 divided by 20  4.2

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A bag contains 25 cookies. There are 15 choc. chip , and 7 peanut butter cookies and the rest are oatmeal raisin cookies. What i
stira [4]

Answer:

40 percent

Step-by-step explanation:

If you multiply 25x4 its 100, so 15x4 is 60 the rest would be 40. that 40 would be the rest of the percentage.

8 0
3 years ago
Add 0.0025 kg, 1750 mg, 2.25 g, and 825,000 μg, and express the answer in grams.
kozerog [31]

Answer:

6.75g

Step-by-step explanation:

The first step is converting everything to grams, by rules of three. Then we add.

In a rule of three problem, the first step is identifying the measures and how they are related, if their relationship is direct of inverse.

When the relationship between the measures is direct, as the value of one measure increases, the value of the other measure is going to increase too.

When the relationship between the measures is inverse, as the value of one measure increases, the value of the other measure will decrease.

Unit conversion problems, like this one, is an example of a direct relationship between measures.

First step: 0.0025kg to g

Each kg has 1000g, so:

1kg - 1000g

0.0025kg - xg

x = 1000*0.0025 = 2.5g

0.0025kg = 2.5g

Second step:  1750 mg

Each g has 1000mg, so:

1g - 1000mg

xg - 1750mg

1000x = 1750

x = \frac{1750}{1000}

x = 1.75g

1750 mg = 1.75g

2.25g - OK

Third step: 825,000 μg to g

Each g has 1,000,000 ug, so:

1g - 1,000,000 ug

xg - 825,000 ug

1,000,000x = 825,000

x = \frac{825,000}{1,000,000}

x = 0.25g

825,000 μg = 0.25g

Final step: adding everyting

0.25g + 2.25g + 1.75g + 2.50g = 6.75g

5 0
3 years ago
HELP ASAP!!!!! PLEASE
german

Answer: imma say A

Step-by-step explanation: sorry if wrong

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Factorise 3c^2-c<br><br><br> Please help me quick
Dafna11 [192]

Answer:

c(3c - 1)

Step-by-step explanation:

3c² - c

Common factor = c

Factored:

c(3c - 1)

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3 years ago
Which angle is adjacent to ZCGD?<br> B<br> G<br> с<br> D<br> E
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Can you give more details please
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