Susan drove an average speed of 30 miles per hour for the first 30 miles of a trip & then at a average speed of 60 miles/hr for the remaining 30 miles of the trip if she made no stops during the trip what was susan's avg speed in miles/hr for the entire trip.(A) 35(B) 40(C) 45(D) 50(E) 55

Answers

Answer 1

Answer:

Answer:

The correct option is B.

Step-by-step explanation:

It is given that Susan drove an average speed of 30 miles per hour for the first 30 miles of a trip & then at a average speed of 60 miles/hr for the remaining 30 miles of the trip.

$Time=(Distance)/(Speed)$

Time taken by Susan in first 30 miles is

$T_1=(30)/(30)=1$

Time taken by Susan in remaining 30 miles is

$T_2=(30)/(60)=0.5$

Total distance covered by Susan is

$D=30+30=60$

Total time taken by susan to complete 60 miles trip is

$T=T_1+T_2$

$T=1+0.5=1.5$

Susan's avg speed in miles/hr for the entire trip is

$S=(60)/(1.5)=40$

The average speed of susan for entire trip is 40. Therefore the correct option is B.

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C2d3 has a solubility product constant of 9.14×10−9. what is the molar solubility of c2d3?

Answers

The correct answer for the question that is being presented above is this one:

We need to express the ksp expression of C2D3
C2D3
= (2x)2(3x)3
= 108x5

Then set that equation equal to your solubility constant

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Given the points A(0, 0), B(e, f), C(0, e) and D(f, 0), determine if line segments AB and CD are parallel, perpendicular or neither. a.parallel
b.perpendicular
c.neither

Answers

The slope:
m = rise / run;
For the line segment AB:
m AB = (y 2 - y 1) /(x 2 - x 1) = ( f - 0 ) / ( e - 0 ) = f / e
For the line segment CD:
m CD = ( 0 - e ) / ( f - 0 ) = - e / f
m CD = - 1 / m AB
Answer:
The lines are B ) perpendicular

Answer:

b.perpendicular

Step-by-step explanation:

Which of the following is not a rigid motion transformation?

Answers

The one which is not a rigid motion transformation is D. Stretch.

What is Geometric Transformation?

Transformation of geometrical figures or points is the manipulation of a given figure to some other way.

Different types of transformations are Rotation, Reflection, Glide reflection, Translation and Dilation.

Rigid motion transformation is the transformation which is formed when a point or a shape is transformed such that the size or the shape of the original object does not change.

In rotation, translation and reflection, there is no change in the size or the shape.

But in dilation, the size becomes smaller or larger based on it is enlargement or stretch.

So stretch is not a rigid motion transformation.

Hence option D is the correct answer.

Learn more about Rigid Motion Transformation here :

brainly.com/question/1408127

#SPJ7

Answer:

D. Stretch

Step-by-step explanation:

All the others keep the same dimensions

Round the mixed number to the nearest whole or half.

8 4/27

Answers

Wouldn't the answer be 8 2/5 or just 8, because 4/27 equals 14 percent

Answer:

14 percent

Step-by-step explanation:

A rectangle’s perimeter and it area have the same numerical value. The width of the rectangle is 3 units. What is the length is the rectangle on units?