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scZoUnD [109]
2 years ago
13

When Sophia runs the 400 meter dash, her finishing times are normally distributed with a mean of 75 seconds and a standard devia

tion of 1.1 second. What probability of races will her finishing time be between 74.2 and 76.4 seconds?
Mathematics
1 answer:
Dmitry [639]2 years ago
3 0

i really dont know the answer im confuseddd

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On a coordinate plane, 2 polygons are shown. Polygon A B C D has points (negative 3, 3), (5, 3), (5, negative 1), and (1, negati
ad-work [718]

Answer:

A dilation with a scale factor of One-fourth and then a translation

Step-by-step explanation:

Plot points A, B, C, D, A', B, C' and D' on the coordinate plane and draw quadrilaterals ABCD and A'B'C'D'.

These quadrilaterals are similar and quadrilateral a'B'C'D' has sides 4 times smaller than quadrilateral ABCD.

This means that the dilation with a scale factor of one-fourth was performed.

The figures were not rotated (they have the same positions), so the second transformation was translation.

Hence, correct option is B: a dilation with a scale factor of One-fourth and then a translation

5 0
2 years ago
Read 2 more answers
Write a rule for the nth term of the arithmetic sequence 3, 11, 19, 27, 35... what is a20?
vladimir1956 [14]
3, 11, 19, 27, 35...

a = 3
d = 11-3 = 8
a20 = a + 19d = 3 + 19*8 = 3 + 132 = 135

HOPE IT HELPS!
5 0
2 years ago
Simplify 12 1/3b + 6 2/3 - 10 2/3b
slavikrds [6]

Answer:

1 2/3b + 6 2/3

Step-by-step explanation:

12\frac{1}{3}b+6\frac{2}{3}-10\frac{2}{3}b

Combine like terms:

1\frac{2}{3}b+6\frac{2}{3}

Since you cannot do any more combination or simplification, you are done. Hope this helps!

4 0
2 years ago
Pablo and Nadia are playing a game on a coordinate grid. Pablo puts a playing piece at point (-2, 3) and Nadia puts a playing pi
7nadin3 [17]

Answer:

The distance between the two playing pieces is of 6.4 units.

Step-by-step explanation:

Suppose we have two points:

A = (x_{1}, y_{1})

B = (x_{2}, y_{2})

The distance between these points is:

D = \sqrt{(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2}}

Distance between:

A(-2,3) and B(3,-1)

D = \sqrt{(3 - (-2))^{2} + (-1 - 3)^{2}} = \sqrt{41} = 6.4

The distance between the two playing pieces is of 6.4 units.

5 0
2 years ago
PLSSS HELP PLS I WILL GIVE BRAINLIEST TO CORRECT PERSON!! 13 POINTS. Camille dilates a digital photograph by a factor of 1.25 to
siniylev [52]

Answer:

the first one is A, the second one is D.

Step-by-step explanation:

For the perimeter you have to multiply by the original dilation number, and for the area, you have to dilate by 2.5




Hope this helps :D

8 0
2 years ago
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