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3 years ago

Write each decimal as a percent. 3. 0.35. 4. 0.812

Mathematics

2 answers:

ruslelena [56]3 years ago

5 0

Answer:

30%.34 81%.02

Step-by-step explanation:

Olenka [21]3 years ago

4 0

Answer:

3.=300%

0.35=35%

4.=400%

0.812=81.2%

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How tall is a building that casts a 74-ft shadow when the angle of elevation of the sun is 36°?

inna [77]

Answer:

101.85ft

Step-by-step explanation:

We can use tan here

$tan\theta=\frac{opp}{adj}\\adj = \frac{opp}{tan \theta} \\adj = \frac{74}{tan(36)} = 101.85$

4 0

3 years ago

I know there is an Additive Realationship in a table when

cricket20 [7]

Additive relationships mean you add the SAME number to any x-value to get the corresponding y-value. If it's not the same number every time, it is NOT an additive relationship. Subtraction can be an additive relationship because subtracting a number is the same as adding a negative number (example: 5 - 2 = 5 + (-2)).

5 0

3 years ago

Solve 7+x-15=2 over 2/3

4vir4ik [10]

Answer:

x= $\frac{32}{3}$

4 0

3 years ago

a motorboat travels 371 kilometers in 7 hours going upstream. it travels 525 kilometers going downstream in the same amount of t

e-lub [12.9K]

Answer:

Speed of boat in still water = 64 km/hr

Speed of the current = 11 km/hr

Step-by-step explanation:

Let the speed of motorboat in still water = x km/hr

Let the speed of current = y km/hr

Motorboat travels 371 km in 7 hours going upstream.

Speed of motorboat while going upstream = speed of motorboat in still water - speed of current = (x-y)

=> $x-y = \frac{371}{7}$

=> $x-y = 53$ ------------------------------(1)

Motorboat travels 525 km in 7 hours going downstream.

Speed of motorboat while going downstream = speed of motorboat in still water + speed of current = (x+y)

=> $x+y = \frac{525}{7}$

=> $x+y = 75$ -----------------------------(2)

Solving for x and y from (1) and (2):

Adding (1) and (2):

2x = 128

=> x = 64

Substituting the value of x in (1), y = 11

6 0

3 years ago

4. The formula v= 64h gives the velocity v in feet per second of an object that

user100 [1]

The velocity when the object falls from 84 feet is 73.32 ft/sec

Step-by-step explanation:

The formula is derived from the conversion of energy principle. As the object falls the potential energy changes into kinetic energy. The right formula is:

$v=\sqrt{64h}$

here,

v represents the velocity

and

h represents the height in feet.

We can plug in the value of height in the formula to get the value of velocity

So, Putting h=84

$v=\sqrt{64*84}\\=\sqrt{5376}\\=73.3212\ ft/sec$

Rounding off to nearest 100th

v=73.32 ft/sec

The velocity when the object falls from 84 feet is 73.32 ft/sec

Keywords: Velocity, Height

Learn more about velocity at:

#LearnwithBrainly

8 0

4 years ago