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2 years ago

A plow truck can plow 3 driveways in 25 minutes. How many driveways can he plow in 1 hour 40 minutes?

Mathematics

2 answers:

rjkz [21]2 years ago

8 0

Answer:

12 driveways

Step-by-step explanation:

Amanda [17]2 years ago

4 0

Hello,

The correct answer is 12 driveways,

To solve this you first divide 1 hour and 40 minutes aka 100 minutes by 25. After that you will multiply the answer or 4 by 3 to get 12

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a 5 inch tall bamboo shoot doubles in height every 3 days. if the equation, y=ab^x where x is the number of doubling periods, re

Lemur [1.5K]

X-doubling periods
Y-height of bamboo
Y=ab^x

1) make a table of values
X Y
1 5
2 10
3 20

2) write equations and substitute
5=ab^1 —> a=5/b^1 —> a=5/b
10=ab^2

Substitute into second equation

10=(5/b)*b^2
10=5b^2/b
10=5b
b=2

Substitute back in

b=2
10=a*2^2
10=4a
a=5/2

End equation:
Y=5/2*2^x

3 0

3 years ago

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quester [9]

Answer:

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Step-by-step explanation:

5 0

2 years ago

Are these ratios equivalent?

masya89 [10]

Answer:

A, yes.

Step-by-step explanation:

63:60, 21:20:

The difference between 60 and 20 is *3. If you do that to 21, you get 63. So a , yes.

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2 years ago

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mafiozo [28]

The answer to the problem is
y=1/2x

3 0

3 years ago

Read 2 more answers

(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x

Aliun [14]

As

$\tan x=\dfrac{\sin x}{\cos x}$
$\cot x=\dfrac{\cos x}{\sin x}$

we have

$\sin x(\tan x\cos x-\cot x\cos x)=\sin x\left(\sin x-\dfrac{\cos^2x}{\sin x}\right)=\sin^2x-\cos^2x$

Recalling that $\cos2x=\cos^2x-\sin^2x$ , we end up with

$-\cos2x=1-2\cos2x$
$1=\cos2x$
$\implies2x=2n\pi$

(where $n$ is any integer)

$\implies x=n\pi$

5 0

3 years ago