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brilliants [131]
2 years ago
10

when Quinn got home he turned the air conditioner on. T represents the temperature in Quinn's home (in degrees celsius) after t

minutes. T=42-0.7t how fast did the temperature drop ??​
Mathematics
1 answer:
Alina [70]2 years ago
7 0

Answer:

R(t)=42-0.7t

Step-by-step explanation:

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The present ages of Vijay and gautam are in ratio 2:3. five years hence,their ages will be in the ratio 3:4. find their present
Ratling [72]

Answer:

Vijay present age: a

Gautam present age : b

2/3=a/b

3a = 2b

3/4 = (a+5)/(b+5)

4a+20 = 3b +15

(3a - 2b =0) x 3---------9a - 6b = 0

(4a - 3b = -5) x 2------- 8a - 6b = -10

9a - 6b - 8a + 6b = 10

a = 10

3(10) - 2b =0

-2b = -30

b = 15

So

Vijay present age = 10

Gautam present age = 15

7 0
2 years ago
Is this the correct procedure for this kind of question? Apparently the answer is supposed to be log6/log5.
zhuklara [117]

Answer:

Yes mark me brainliest

Step-by-step explanation:


4 0
2 years ago
Read 2 more answers
Counting from 1 to 46, how many 4s will you encounter? 8 10 11 12 14
Ray Of Light [21]

Answer:

11

Step-by-step explanation:

4=1

14=2

24=3

34=4

40=5

41=6

42=7

43=8

44=9

45=10

46=11

You will encounter 11 4s.

5 0
2 years ago
An ice cream shop chose 25 customers at random and asked each to name a favorite flavor. The results are summarized in the pie c
Artemon [7]

Answer: 6 customers

Step-by-step explanation:

From the pie chart,

Given;

Cookies and creams = 24%

Mint chocolate chips = 28%

Straw berry = 20%

Vanilla = 12

Butterscotch = 16

No of customers = 25

Solution

How many of the 25 customers named cookies and cream

= 25 x 24/100

= 25 x 0.24

= 6 customers

6 customers named cookies and cream

3 0
2 years ago
Read 2 more answers
Problem 2.2.4 Your Starburst candy has 12 pieces, three pieces of each of four flavors: berry, lemon, orange, and cherry, arrang
kkurt [141]

Answer:

a) P=0

b) P=0.164

c) P=0.145

Step-by-step explanation:

We have 12 pieces, with 3 of each of the 4 flavors.

You draw the first 4 pieces.

a) The probability of getting all of the same flavor is 0, because there are only 3 pieces of each flavor. Once you get the 3 of the same flavor, there are only the other flavors remaining.

b) The probability of all 4 being from different flavor can be calculated as the multiplication of 4 probabilities.

The first probability is for the first draw, and has a value of 1, as any flavor will be ok.

The second probability corresponds to drawing the second candy and getting a different flavor. There are 2 pieces of the flavor from draw 1, and 9 from the other flavors, so this probability is 9/(9+2)=9/11≈0.82.

The third probability is getting in the third draw a different flavor from the previos two draws. We have left 10 candys and 4 are from the flavor we already picked. Then the third probabilty is 6/10=0.6.

The fourth probability is getting the last flavor. There are 9 candies left and only 3 are of the flavor that hasn't been picked yet. Then, the probability is 3/9=0.33.

Then, the probabilty of picking the 4 from different flavors is:

P=1\cdot\dfrac{9}{11}\cdot\dfrac{6}{10}\cdot\dfrac{3}{9}=\dfrac{162}{990}\approx0.164

c) We can repeat the method for the previous probabilty.

The first draw has a probability of 1 because any flavor is ok.

In the second draw, we may get the same flavor, with probability 2/11, or we can get a second flavor with probability 9/11. These two branches are ok.

For the third draw, if we have gotten 2 of the same flavor (P=2/11), we have to get a different flavor (we can not have 3 of the same flavor). This happen with probability 9/10.

If we have gotten two diffente flavors, there are left 4 candies of the picked flavors in the remaining 10 candies, so we have a probabilty of 4/10.

For the fourth draw, independently of the three draws, there are only 2 candies left that satisfy the condition, so we have a probability of 2/9.

For the first path, where we pick 2 candies of the same flavor first and 2 candies of the same flavor last, we have two versions, one for each flavor, so we multiply this probability by a factor of 2.

We have then the probabilty as:

P=2\cdot\left(1\cdot\dfrac{2}{11}\right)\cdot\left(\dfrac{9}{10}\cdot\dfrac{2}{9}\right)+\left(1\cdot\dfrac{9}{11}\cdot\dfrac{4}{10}\cdot\dfrac{2}{9}\right)\\\\\\P=2\cdot\dfrac{36}{990}+\dfrac{72}{990}=\dfrac{144}{990}\approx0.145

5 0
2 years ago
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