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RideAnS [48]
3 years ago
12

It takes 3 hours for Marty and Cora to weed a garden. How long will it take this 6 people to weed the same garden if they all wo

rk together the same constant rate? Explain.
Mathematics
2 answers:
kvv77 [185]3 years ago
8 0
A = area  P = perimeter. The base of a shape like a polygon is the bottom of the shape. In order to find the area of the base the formula one uses depends on the shape of the polygon
vfiekz [6]3 years ago
6 0
It would take 1 hour
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What is the value of the expression when y = 2 2-y/4+y + 3(y+2)/y​
nexus9112 [7]

Answer:

=2y+22

Step-by-step explanation:

What is the value of the expression when y = 2 2-y/4+y + 3(y+2)/y​  

Sorry if I am wrong

7 0
2 years ago
Invention cost three dollars for a pack of eight. Laura gives the cashier $20 to buy inventions and gets $11 and change. How man
brilliants [131]
Laura buys 3 packs of inventions.
 
20-11=9
(amount given-change=actual cost)

9 ÷ 3 = 3
(actual cost ÷ dollars per pack= number of packs bought)


4 0
3 years ago
Two number cubes are rolled to determine how a token moves on a game board. The sides of each number cube are numbered 1, 2, 3,
lord [1]

The mathematical expectation of Option A is 4. The mathematical expectation of Option B is 2.75. Option A offers a greater likelihood of advancing to the finish line.

7 0
3 years ago
PLZZZ HELP I DONT UNDERSTAND THIS AT ALLLLLL. :( :(
NISA [10]

Answer:

W÷9=z

Step-by-step explanation:

18÷9=2

45÷9=5

81÷9=9

Z is the quotient of W when divided by 9.

4 0
3 years ago
Calculate the approximate probability that at least 2 children have been diagnosed with ASD among the 200 selected children.
mixas84 [53]

Answer:

The approximate probability that at least 2 children have been diagnosed with ASD among the 200 selected children is

0.01 or 1%.

Step-by-step explanation:

Number of selected children = 200

The probability of no child been diagnosed with ASD = P(None) = 198/200 = 0.99

Therefore, the probability of at least two children been diagnosed with ASD = 1 - 0.99 = 0.01.

This is the same as:

If 2 children have been diagnosed with ASD,

therefore, the approximate probability that at least 2 children have been diagnosed is:

2/200 = 0.01.  This value is equal to 1%.

The above are summed up in:

The probability of at least one = 1/200 = 0.05

Therefore, the probability of at least two = 0.05 * 2 = 0.01

b) Generally, to find the probability of at least one event happening, we calculate the probability of none and then subtract that result from 1. That is, P(at least one) = 1 – P(none).  For two events happening, the sum of the probability of at least one in two places is deducted from 1 to get the probability of at least two.

4 0
2 years ago
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