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vovangra [49]
3 years ago
5

Lisa Lilly was the best runner in eighth grade. One day she ran 100m in 40 sec, 200m in 1 and 10 sec, and 200m over low hurdles

Olin one and a half minutes. How many more second did it take her to run the 200m over low hurdles then if did to run the 200 m dash?
Mathematics
2 answers:
Ilya [14]3 years ago
5 0

Answer:

It took her 20 more seconds to run 200m over low hurdles than it took her to do the 200m dash

Dmitry [639]3 years ago
4 0
It would take Lisa Lilly 100 seconds
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Rewrite the following as like fractions (having the same denominator) and place them in order from least to greatest.
Maksim231197 [3]
2/3, 5/6, 4/7....common denominator is 42
2/3 = 28/42
5/6 = 35/42
4/7 = 24/42
least to greatest : 2/3, 5/6, 4/7

3/4, 7/12, 4/5....common denominator is 60
3/4 = 45/60
7/12 = 35/60
4/5 = 48/60
least to greatest : 7/12, 3/4, 4/5

7/10, 8/15, 11/20.....common denominator is 60
7/10 = 42/60
8/15 = 32/60
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least to greatest : 8/15, 11/20, 7/10


3 0
3 years ago
A prize wheel is divided into 12 equally likely spaces labeled 1 to 12.
ikadub [295]

Answer:

Events E and F are independent.

Step-by-step explanation:

E = {multiple of 3}  = {3, 6, 9, 12}

P(E) = 4/12

F = {even number}  = {2, 4, 6, 8. 10, 12}

P(F) = 6/12

E and F = {even and multiple of 3} = {6, 12}

P(E∩F) = 2/12

In order for two events to be independent the following relationship must be true:

P(E)*P(F) = P(E\cap F)

Testing this property:

P(E)*P(F) = \frac{4}{12}*\frac{6}{12}=\frac{24}{144}=\frac{1}{6}    \\P(E\cap F) = \frac{2}{12}=\frac{1}{6} \\P(E)*P(F) = P(E\cap F)

The relationship holds true, thus events E and F are independent.

4 0
3 years ago
Which of the following trigonometric fuuctions has a range of apply all real numbers? Select all that apply.
Kryger [21]

Answer:

y=tan x and y=cotx

Step-by-step explanation:

We are given functions of all trignometric ratios and asked to find out which has range of all real numbers.  Let us discuss one by one

1. y =sinx:  False because -1≤sinx≤1 always

2. y=cosx:False because -1≤cosx≤1 always

3. y = tanx:  True because tanx can take any value

4. y=cot x: True because cots x can take any value

5. y = csc x:   False because this range does not lie between -1 and 1

6. y=sec xFalse because this range does not lie between -1 and 1

6 0
3 years ago
4(x+2)=36 please help
MaRussiya [10]
To solve it you have to distribute (multiply) the 4 to the x and the 2.Then you would have to subtract 8 by both sides and which it would cancel on the left side, then after you divide 4 by both sides and then u get you answer.
8 0
3 years ago
Calculate the total cost, including 7.5% sales tax, of a $189.99 tool set.
Fantom [35]

Answer:

204.24

Step-by-step explanation:

189.99 x .075 = 14.25 cents tax

189.99 + 14.25 = 204.24

7 0
3 years ago
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