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3 years ago

What is the measurement of angle F?

Mathematics

1 answer:

Julli [10]3 years ago

3 0

Answer (C) 50 degrees

Steps: please check the attached image for details

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Pls Help fast (2x−5)^2−.5x<(2x−1)(2x+1)−15

diamong [38]

I honestly don't know how to help try going to an order of operations calculator

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3 years ago

Integers can be negative numbers. 9TRUE OR FALSE

Maurinko [17]

Answer:

This is true! :)

Step-by-step explanation:

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3 years ago

robin has read 3/4 of a book. mark said he had read 1/2 as much as robin. what fraction of the book has mark read

Rom4ik [11]

3/4 (0.75) divided by 2 = 0.375 or 3/8

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3 years ago

A boat on a river travels downstream between two points, 20 mi apart, in one hour. The return trip against the current takes 2 1

kondaur [170]

Answer:

The speed of boat in still water is 14 miles per hour.

The speed of current is 6 miles per hour.

Step-by-step explanation:

Let v represent the speed of boat in still water and c represent speed of current.

We have been given that a boat on a river travels downstream between two points, 20 miles apart, in one hour.

The speed of boat downstream would speed of boat in still water plus speed of current that is $(v+c)$ .

The return trip against the current takes 2 1/ 2 hours. The speed of boat against current would speed of boat in still water minus speed of current that is $(v-c)$ .

$\text{Speed}=\frac{\text{Distance}}{\text{Time}}$

Substituting our given values, we will get:

$v+c=\frac{20}{1}...(1)$

$v-c=\frac{20}{2.5}...(2)$

Adding both equations, we will get:

$v+c+(v-c)=\frac{20}{1}+\frac{20}{2.5}$

$v+c+v-c=\frac{20}{1}+\frac{20}{2.5}$

$2v=20+8$

$2v=28$

$\frac{2v}{2}=\frac{28}{2}$

$v=14$

Therefore, the speed of boat in still water is 14 miles per hour.

To find the speed of the current in the river, we will substitute $v=14$ in equation (1) as:

$14+c=\frac{20}{1}$

$14+c=20$

$14-14+c=20-14$

$c=6$

Therefore, the speed of current is 6 miles per hour.

3 0

3 years ago

Is (2^(n+1))∈O(2^n)? Is (2^(2n))∈O(2^n)?

Alborosie

Answer:

118.224898n4o2+118.224898n3o2 or 21.746255n2o

Step-by-step explanation:

5 0

4 years ago