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Sever21 [200]
3 years ago
8

Fifteen sprinters ran the 50-yard dash in an average of 9.5 seconds. Of those runners,3 ran the dash in 11.5 seconds. Find the a

verage time of the other 12 boys
Mathematics
2 answers:
Blizzard [7]3 years ago
8 0
Various answer 4 twelve boys
dezoksy [38]3 years ago
3 0
There might be a variety of averages for the 12 boys.
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Ann works 51/2 hours, Mary works 61/3 hours, and John works 41/4 hours. How many combined hours have they worked?
nordsb [41]
The common denominator of these fractions will be 12. So Ann worked 306/12 hours, Mary worked 244/12 hours, and John worked 123 hours, meaning they have worked 673/12 hours together.
7 0
3 years ago
How many centimeters are there in 30 inches
Yuliya22 [10]

Answer:

76.2

Step-by-step explanation:

You multiple the length value by 2.54

7 0
4 years ago
Read 2 more answers
How many ways can nine kids line up in a single row to have their picture taken?
Strike441 [17]

You should be able to take 9 factorial.
9!=9×8×7×6×5×4×3×2×1
9!=362,880

8 0
3 years ago
According to the rational root theorem, which answer is not a possible rational root of x^3+9x^2-x+8=0
Readme [11.4K]

Answer:

6

Step-by-step explanation:

The rational root theorem states that the roots must be factors of p/q

where p is the constant and q is the coefficient of the highest order term

p = 8  which has factors ±1, ±2,±4,±8

q  = 1 which has factors ±1

The possible roots are ±1, ±2,±4,±8

                                        --------------------

                                           ±1

which simplifies to

±1, ±2,±4,±8

6 is not a possible root

7 0
3 years ago
If p is the midpoint of line xy, xp=11-6b and py=6-b, find xp
MariettaO [177]
Since p is the midpoint then xp and pay must equal each other
So, 11-6b=6-b
Solve for b
11-6b=6-b
-6 -6
5-6b=-b
+6b +6b
5=5b
b=1

xp=11-6(1)
xp=5
5 0
3 years ago
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