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Vlada [557]
3 years ago
13

Can someone help me on this

Mathematics
1 answer:
Vladimir79 [104]3 years ago
8 0

Answer:

7%

Step-by-step explanation:

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Hardy's plant grows rapidly. It grows by 10cm every 2 years. How much taller will Hardy's plant be in 5 years?
Angelina_Jolie [31]
The answer is 25centimeters. This is the answer because you have to multiply 10cm by 5 years then divide that by 2 since it grows 10 cm every 2 years. 
6 0
4 years ago
When Klorina swims with the current, she swims 10 km in 2 h. Against the current, she can swim only 8 km in the same time. How f
nasty-shy [4]

Answer:

Klorina's rate in still water is 4.5 km/h

Current's rate is 0.5 km/h

Step-by-step explanation:

Let

x km/h = Klorina's rate in still water

y km/h = current's rate

<u>With the current (current helps):</u>

Distance = 10 km

Time = 2 hours

Rate = x + y km/h

10=2(x+y)

<u>Against the current:</u>

Distance = 8 km

Time = 2 hours

Rate = x - y km/h

8=2(x-y)

Divide both equations by 2:

x+y=5\\ \\x-y=4

Add these equations:

x+y+x-y=5+4\\ \\2x=9\\ \\x=4.5\ km/h

Subtract these two equations:

(x+y)-(x-y)=5-4\\ \\x+y-x+y=1\\ \\2y=1\\ \\y=0.5\ km/h

4 0
3 years ago
The distance between each base on a field is 90 ft. How far does a catcher have to throw the ball from home plate to second base
Gnoma [55]

Step-by-step explanation:

A baseball field is in the shape of a square (or diamond).  Home plate and second base are opposite corners of each other.  So the distance is equal to the diagonal of the square.

Use Pythagorean theorem to find the diagonal, or use properties of a 45-45-90 triangle.

Using Pythagorean theorem:

c² = a² + b²

c² = (90 ft)² + (90 ft)²

c = 90√2 ft

c ≈ 127 ft

7 0
3 years ago
Write the expression 11-2 in simplest form.
vampirchik [111]

Answer:

11-2 or 9

Step-by-step explanation:

5 0
2 years ago
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How is solving for speed similar to solving for time?
vichka [17]

Answer:

They both use the same units of measure.

Step-by-step explanation:

3 0
3 years ago
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