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Anna [14]
3 years ago
11

263 grams dental stone powder

Mathematics
1 answer:
djyliett [7]3 years ago
6 0

Answer:

21.29 milliliters

Step-by-step explanation:

First find how much water is need for 1 gram of stone by dividing both numbers by 263. Then multiplying both numbers by 70.

Grams : Milliliters

263       80

1           : 0.3042 (Rounded to 4 decimal places)

70        : 21.29 (Rounded to 2 decimal places)

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30% of the cars in a parking lot are green. If there 21 green cars, how many cars are parked in the parking lot?
tatyana61 [14]

Answer:

70 cars

Step-by-step explanation:

Let x cars are parked in the parking lot.

30\% \: of \: x = 21 \\  \\  \frac{30}{100}  \times x = 21 \\  \\ x = 21 \times  \frac{100}{30}  \\  \\ x =  \frac{2100}{30}   \\  \\ x = 70 \:

70 cars are parked in the parking lot.

7 0
3 years ago
What value is euivalent to (6 divided 2)[(5 plus 1)(8 divided 4)] ? A)30 B)36 C)48 D)60
Crazy boy [7]

I think the answer is B.

6÷2=3

5+1=6

8÷4=2

6×2=12

12×3=36

7 0
3 years ago
Read 2 more answers
7. What is the next fraction in each of the following patterns?
serious [3.7K]

Answer:

36/40, 47/101, 192

Step-by-step explanation:

(a)The numerator (top number of the fraction) is adding up by odd numbers in order.

From 1/40 to 4/40 you add 3, from 4/40 to 9/40 you add 5, from 9/40 to 16/40 you add 7, and from 16/40 to 25/40 you add 9.

The next number to add would logically be 11. So from 25/40 you would go to 36/40.

36/40 is your next fraction.

(b)

3+4=7,4+7=11,7+11=18,11+18=29,18+29=47

(c) 1*2=2,2*2=4,2*4=8,4*8=32,8*32=256,32*256=8,192

4 0
3 years ago
Which ordered pair is not included in a graph of y=2x+5...(0,0) (1,7) (0.5,6) or (2,9)
Alborosie
(2,9) I think, I dunno
4 0
3 years ago
A game is played using two spinners. Spinner A has four sections labelled 2, 4, 6, 8 and Spinner B has labelled 1, 3, 5. Players
Margarita [4]

Answer:

1500p

Step-by-step explanation:

The spinner A has 4 possible values, and the spinner B has 3 possible values, so the total number of possibilities for both spinners is the product of these number of possibilities:

4 * 3 = 12

From these 12 possible pair of values, the ones that give a sum of 7 are:

(6,1), (4,3) and (2,5).

We have 3 cases where the sum is 7, so the probability of having a sum of 7 is 3/12 = 25%. Therefore, the probability of not having a sum of 7 is 75%

To find the expected value, we multiply the probability of each case by the value it would give. If the player wins, the school loses 10p (the player paid 20p and earned 30p), and if the player loses, the school wins 20p. So the expected value of 120 games is:

120 * (0.25 * (-10) + 0.75 * (20)) = 1500p

6 0
3 years ago
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