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kykrilka [37]
3 years ago
9

If a train is traveling at 60 miles per hour at what average speed should you run at

Mathematics
1 answer:
Bogdan [553]3 years ago
5 0
6 - 23 Miles Per Hour
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Which type of triangle has side measures of 5 cm, 9 cm, and 12. 7 cm and one angle measure of 128°?.
Verdich [7]

we have different side lengths and thus different angles anyhow, meaning is an Scalene triangle.

6 0
2 years ago
At a certain time of day, the angle of elevation is 40°. To the nearest foot, find the height of a tree whose shadow is 31 feet
elena-s [515]

Answer: Height of tree = 26 ft

Make a triangle ABC with 40 degrees angle. The shadow is the base of the triangle equals 31 feet.

Base = AC = 31

Perpendicular = CB = ?

Hypotenuse = AB

Using trigonometric equation

tan 40 (deg) = CB / AC

CB = Tan 40 x AC

CB = 0.83909 x 31

CB = 26.011

Thus the height of the tree = 26 ft

7 0
2 years ago
If f(x)= 3x^2 + 3x^1/2 +3x what is the value of f(-9)
Dahasolnce [82]

Answer:

216 + 9i

Step-by-step explanation:

Given: f(x) = 3x² + 3x^{1/2} + 3x

When x = -9, f(x) equals to;

3(-9)²  + 3(-9)^{1/2} + 3(-9)

243 + 3(3i) - 27

243 + 9i - 27

216 + 9i

4 0
3 years ago
What is the solution of log 2 (3x-7) = 3
wel

\bf \textit{Logarithm Cancellation Rules} \\\\ log_a a^x = x\qquad \qquad \stackrel{\textit{we'll use this one}}{a^{log_a x}=x} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \log_2(3x-7)=3\implies 2^{\log_2(3x-7)}=2^3\implies 3x-7=2^3\implies 3x-7=8 \\\\\\ 3x=15\implies x=\cfrac{15}{3}\implies x=5

7 0
3 years ago
Given: F(x) = x 2, find F(x+h)-F(x)/h and simplify 2x + 1 2x + h
Agata [3.3K]

Answer:

give simplify + 1 2+ h find 2

7 0
3 years ago
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