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Diano4ka-milaya [45]
3 years ago
7

I need help pls, show work

Mathematics
1 answer:
OlgaM077 [116]3 years ago
6 0
Change the 4 4/5 to an improper fraction so 24/5. Then divide 24 by 2 which gives you 12. So the answer is 12 2/5 foot pieces can be cut from 4 and 4/5

Hope it helped :)
Please give brainliest
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Running times for 400 meters are Normally distributed for young men between 18 and 30 years of age with a mean of 93 seconds and
Luda [366]

Answer:

C. 45 and 141 seconds

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 93 seconds

Standard deviation = 16 seconds

99.7% of running times are approximately between:

By the Empirical rule, within 3 standard deviations of the mean, so between 3 standard deviations below the mean and 3 standard deviations above the mean

3 stnadard deviations below the mean

93 - 3*16 = 45 seconds

3 standard deviations above the mean

93 + 3*16 = 141 seconds

The correct answer is:

C. 45 and 141 seconds

3 0
3 years ago
Question 7
saw5 [17]

Answer:

I'm pretty sure that'd be 8567

3 0
3 years ago
PLEASE HELP NEED STEP BY STEP EXPLAINATION!!!then ƒ(2) =
andrezito [222]
Swap x and y, f^-1 is and solve for y to get f^-1 the inverse of f. f(f^-1)=f^-1(f)=x is the identity as a check
f(2)=3*2+1=7 (2,7)
f^-1(7)=2 (7,2)
7 0
3 years ago
Read 2 more answers
In ΔABC, AC = BC, CD ⊥ AB with D ∈ AB , AB = 4 in, and CD = sqrt3 in. Find AC.
amid [387]
Check the picture below.

segments AC and BC are equal, that means that ABC is an isosceles triangle, with twin sides.  Now the twin sides make twin angles on the opposite side, namely the angles at A and B are twins.

if the angles at A and B are twins, and CD is ⟂ to AB, there's only one possibility that can happen, and is if CD is an angle bisector at C.

an angle bisector like CD with twin angles on each side, will cut AB in two equal halves, therefore, if AB = 4, then AD = 2 and DB = 2.

8 0
3 years ago
Evaluate the expression when B=7 c=-7. c-6b
Naya [18.7K]

Answer:

7 - (6 x 7) = -35

7 0
2 years ago
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