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inysia [295]
3 years ago
14

The graph represents Jason's speed on a trip. What is the rate of change for the period of time between 10 and 20 minutes?

Mathematics
2 answers:
11111nata11111 [884]3 years ago
7 0
From 10 minutes to 20 minutes there is no rate of change, it stays at a constant and steady rate

Your answer would be A) 0
natali 33 [55]3 years ago
6 0

Answer:

Option A - 0

Step-by-step explanation:

Given : The graph represents Jason's speed on a trip.

To find : What is the rate of change for the period of time between 10 and 20 minutes?                        

Solution :

The rate of change is defined as the division of change in  speed by change in time.

Now, the rate of change for the period of time between 10 and 20 minutes is

Speed in 10 minutes  is 50 mph

Speed in 20 minutes is 50 mph

The rate of change is r=\frac{s_2-s_1}{t_2-t_1}

r=\frac{50-50}{20-10}

r=0

Therefore, Option A is correct.

The rate of change for the period of time between 10 and 20 minute is 0 or constant as shown graphically.

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Which shape has a line of symmetry that can be drawn through the figure?
zimovet [89]

Answer: Option D.

Step-by-step explanation:

A figure has a line of symmetry if we can draw a line through the figure, in such way that the line cuts the figure in exactly two equal halves.

Then any figure that can be cutin exactly two halves, is a correct answer to this question.

Then:

For a circle, the line of symmetry is the diameter of the circle.

For the square, the line of symmetry can be obtained by cutting the square with a line that is perpendicular to one of the sides, and cuts that side exactly on the midpoint.

For an equilateral triangle, the line of symmetry is the line that cuts any base in the midpoint and also passes through the opposite vertex.

Then all the figures are correct options, then the correct option is D

7 0
3 years ago
In ΔCDE, the measure of ∠E=90°, the measure of ∠D=22°, and CD = 80 feet. Find the length of EC to the nearest tenth of a foot.
chubhunter [2.5K]

Answer:

30

Step-by-step explanation:

5 0
3 years ago
8. 3(4x + 4) + (x + 8) = 7x – 2(-3x + 11) Find the value of x
Marina86 [1]

There are no values of x that make the equation true. No solution.

3 0
3 years ago
Find a degree 3 polynomial with real coefficients having zeros 1 and 2-2i and a lead coefficient of 1. Write P in expanded form.
amm1812

Answer:

Step-by-step explanation:

complex roots always occur in pairs.

roots are 1,2-2i,2+2i

P(x)=a(x-a)(x-b)(x-c)

P(x)=1(x-1)[x-(2-2i)][x-(2+2i)]

=1(x-1)[(x-2)+2i][(x-2)-2i]

=(x-1)[(x-2)²-(2i)²]

=(x-1)[(x-2)²-4i²]

=(x-1)[x²-4x+4-4(-1)]

=(x-1)[x²-4x+4+4]

=(x-1)[x²-4x+8]

=x³-4x²+8x-x²+4x-8

=x³-5x²+12x-8

4 0
3 years ago
Find the area of the trapezoid with bases 8 cm and 4 cm and a height of 1/4 cm. (Simplify your answer)
Simora [160]

Answer:

1 1/2 or 1.5

Step-by-step explanation:

trapezoid area formula: a = (a+b/2) x h

bases: 8 + 4 = 12

12/2=6

6 x 1/4 = 1.5 or 1 1/2

4 0
2 years ago
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