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Alex787 [66]
3 years ago
6

Stephen Kiprotich, the 2012 Olympic marathon winner, completed the 26.219 miles in 128 minutes. What was his speed in kilometers

per minute?
Mathematics
1 answer:
EleoNora [17]3 years ago
3 0

Answer:

0.205 (rounded)

Step-by-step explanation:

Perform long division by multiplying the numbers by 1000 to remove the decimals and then solving. Or you could have just used a calculator lol. So I did like 5 digits of it, and you could just round to 0.205, I wouldn't go too far with the decimals even though it is a terminating decimal I believe.

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Solve for x <br><br> log(7x+1) = log(x-2) + 1
myrzilka [38]
Log(7x+1) - log(x-2) =1

log[(7x+1) / (x-2)] =1 or log[(7x+1) / (x-2)] =log10 (log10=1)

it means (7x+1) / (x-2) =10

Solving ===> x=7
5 0
3 years ago
Suppose a fair 6-sided die is tossed five times. What is the probability that we see at least one three in the five tosses?
Marta_Voda [28]

Answer:

C. 0.1667

Step-by-step explanation:

1/6 +0/6 + -1/6

The closest answer is C. 0.1667

Based on 2nd throw of dice shows zero then  0.1667 of the answer is shown on the 3rd throw in decimal form of -1/6

3 0
3 years ago
9x-7=-7 how do you solve this problem
borishaifa [10]
<span>9x-7=-7 
You would add 7 to both sides because you want to get to the point were your variable is alone. 9x = 0 Then you would dicide each side by 9 because after doing this your variable would be alone. x = 0 would be your final answer. 

YA BOIIIIIIIIIII, DEADPOOL IN THE HOUSE!

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3 0
3 years ago
Read 2 more answers
Evaluate 6(5-(6-5)-3​
IrinaK [193]

Answer:

Step-by-step explanation:

Evaluate 6(5-(6-5)-3​) =  6(5-1-3​)   {first solve innermost bracket}

                               = 6* (5-4) = 6*1 =6

4 0
3 years ago
Read 2 more answers
Which representation of a transformation on a coordinate grid does not preserve congruence?
Alex17521 [72]

Answer:

B

Step-by-step explanation:

Consider all options:

A. Transformation with the rule

(x,y)\rightarrow (x,-y)

is a reflection across the x-axis.

Reflection across the x-axis preserves the congruence.

B. Transformation with the rule

(x,y)\rightarrow \left(\dfrac{7}{8}x,\dfrac{7}{8}y\right)

is a dilation with a scale factor of \frac{7}{8} over the origin.

Dilation does not preserve the congruence as you get smaller figure.

C. Transformation with the rule

(x,y)\rightarrow (x+6,y-4)

is a translation 6 units to the right and 4 units down.

Translation 6 units to the right and 4 units down preserves the congruence.

D. Transformation with the rule

(x,y)\rightarrow (y,-x)

is a clockwise rotation by 90^{\circ} angle over the origin.

Clockwise rotation by 90^{\circ} angle over the origin preserves the congruence.

3 0
3 years ago
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