3 years ago

5.

Mathematics

2 answers:

emmasim [6.3K]3 years ago

8 0

Answer:

B. x = −1

Step-by-step explanation:

In the graph, the vertex of the parabola hits point (-1,-2). Therefore, the axis of symmetry is x = -1. It is not y = -2, since the parabola opens vertically, not horizontally.

olga2289 [7]3 years ago

3 0

Answer is C x=1 because that’s the middle of it.

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A car travels 30 1/5 miles in 2/3 of an hour.What is the average speed in miles per hour of the car

slega [8]

The speed of car is 45.3 miles per hour.

Further explanation:

Speed is the rate at which an object changes position with respect to time.

Given

$Distance = 30\frac{1}{5}\ miles\\Time=\frac{2}{3}$

The formula for calculating speed is:

$Speed = \frac{distance}{time}\\= \frac{30\frac{1}{5}}{\frac{2}{3}} \\=\frac{\frac{151}{5}}{\frac{2}{3}} \\=\frac{151}{5}*\frac{3}{2}\\=\frac{453}{10}\\=45.3\ miles\ per\ hour$