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Natali [406]
3 years ago
7

it takes 40 minutes for 8 people to paint 4 walls how many minutes would it take 10 people to paint 7 walls

Mathematics
1 answer:
Alex Ar [27]3 years ago
5 0

Answer: 70 minutes


Step-by-step explanation:

Each person takes 5 minutes to do half a wall and another person will take 10 minutes. So it will be 70 minutes


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Carl buys 1.5 pounds of grapes. The
Umnica [9.8K]

Answer:

$3.51

Step-by-step explanation:

1 pound is $2.39 so divide by 2 and round up to the nearest whole number which is $1.12. Add $1.12(The cost of 0.5 pounds) to $2.39(The cost of 1 pound) to get $3.51 as your total.

4 0
3 years ago
What is the distance between R(5,2) and S(4,-7)?<br><br> Round to the nearest tenth.
Naddik [55]
You can calculate the distance between two point using this fomula: 

√(x_2-x_1)^2+(y_2-y_1)^2


If you insert you values you get:

 √(4-5)^2+(-7-2)^2 = 9.06 = 9.1
5 0
3 years ago
On a hospital floor, 16 patients have a disease with a mortality rate of 0.1. Find the probability that two of them die. Round t
matrenka [14]

Answer:

The probability that two of them

die is 0.257

Step-by-step explanation:

From the question, we have that the mortality rate is 0.1

So the probability that they will survive is 1-0.1 = 0.9

Now, we want to check that two will die

We are going you use the Bernoulli approximation of the Binomial theorem as follows

= nCr * p^n * q^(n-r)

where n = 16

r = 2

P = 0.1

q = 0.9

Substituting these values;

14 C 2 * 0.1^2 * 0.9^12

= 0.257

6 0
2 years ago
This polygon has an area of 72 square centimeters what is the height of the parallelogram​
Crazy boy [7]
Polígono is the height of pállelos gran
5 0
2 years ago
The answer I put is wrong. SO don't put that as a answer. NEED TO EXPLAIN VERY IMPORTANT
n200080 [17]

Answer:

c

Step-by-step explanation:

OK 250 divided by 40 equals 6.25 so she would need 6 bags at least, i would say its your answer but you said its wrong so

5 0
3 years ago
Read 2 more answers
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