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sesenic [268]
3 years ago
8

What number are you thinking of?

Mathematics
1 answer:
KatRina [158]3 years ago
5 0

Try it! Suppose the number I'm thinking of is 49.


The product of 49 and 7 is 343; we subtract 3 from that, obtaining 340.


Divide this 340 by 13: 340/13.


Double this quotient: 680/13

680 + 390

Add 30 to this result: 680/13 + 30 = ------------------ = 1070/13

13


Sadly, this is not 50, as we'd hoped.

Why don't you try doing this yourself? Would you do anything differently from the way I did it?


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3 years ago
What is the period, in seconds, of a simple pendulum of length 2 meters? Use the gravitational constant g = 9.8 m/s^2 and round
kirill [66]

Answer:

The period, in seconds to two decimal places is, 2.84 sec

Step-by-step explanation:

Using formula:

T = 2 \pi \sqrt{\frac{l}{g}}             ......[1]

where

T represents the Time period in second

l represents the length of the pendulum/

As per the statement:

Use the gravitational constant g = 9.8 m/s^2 , length of the simple pendulum(l) = 2 meters and \pi = 3.14

Substitute the given values we have;

T = 2\cdot 3.14 \cdot \sqrt{\frac{2}{9.8}}

⇒T = 6.28 \cdot \sqrt{\frac{1}{4.9}}=6.28 \cdot \frac{1}{2.21359436212}= \frac{6.28}{2.21359436212} = 2.83701481512

Therefore, the period, in seconds to two decimal places is, 2.84 sec

8 0
4 years ago
Dinah went out to eat at a restaurant. She wants to leave the waitress a tip of 18%. She can determine the amount she should pay
hoa [83]

Answer:

C. 1.18b

Step-by-step explanation:

Hi! Ace here!

In order to do this, we have to convert 18% into a decimal.

The decimal form of it is .18.

So we have to do

b+.18b

Combine like terms:

1.18b

I hope this helped

6 0
3 years ago
Read 2 more answers
1. f(x) = x; h(x) = 4x - 2
ExtremeBDS [4]

Answer:

=4x-2

Step-by-step explanation:

f=x, h=4x-2, f(x) *h(x): 4x-2

6 0
3 years ago
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