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Ivahew [28]
3 years ago
5

A new baby is born every .08 seconds. how many babies are born in two hours?

Mathematics
2 answers:
shutvik [7]3 years ago
8 0

Answer:

90,000

Step-by-step explanation:

Let's calculate how many seconds we have in two hours.

In one hour we have 60 minutes, so in 2 hours we have 2*60 = 120 minutes.

In one minute we have 60 seconds, so in 120 minutes we have 120*60 = 7,200 seconds.

Now we can use a direct rule of 3. If in 0.08 seconds 1 baby is born, how many babies will be born in 7,200 seconds?  

\text{0.08 seconds} -\!\!\!-\!\!\!- \text{1 babies}\\ \text{7,200 seconds} -\!\!\!-\!\!\!- \text{x babies}

We use the formula of the direct rule of 3:

x = \frac {7,200 * 1}{0.08} \\ \\ x = \frac {7,200}{0.08}\\ \\

x = 90,000

90,000 babies are born in 2 hours.

ANTONII [103]3 years ago
7 0
0.8 x 60 = 48 (per min) 48 x 60 = 2880 (per hour) 2880 x 2 = 5760  I think the answer is 5760!
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Answer:

1. 45.71 miles

2. 10 miles

3. 89.43 miles

4. 0.79 hr

5. 0.025 hr

Step-by-step explanation:

speed = distance/time

After 4 hrs Beverly was 200 miles from home , however she had spent 0.5hr travelling for 20 miles prior to getting to the highway.

Therefore;

Constant speed before Highway = 20/0.5 = 40 miles/hr

Constant speed at Highway = \frac{(200-20)}{(4-0.5)} = 51.43 miles/hr

1. in 1 hr beverly will have travelled;

⇒ (20 miles in 0.5 hr ) + (0.5 hr  at speed 51.43 miles/hr)

⇒ 20 + (0.5 x 51.43) = 45.71 miles

2. In 0.25 hr beverly had not reached the highway

⇒ distance = speed x time

⇒ distance = 40 x 0.25 = 10 miles

3. in 1.85 hrs beverly will have travvelld;

⇒ (20 miles in 0.5 hr ) + (1.35 hr at speed 51.43 miles/hr)

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4. Time taken to get to 35 miles

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⇒ 0.5hr + (15/51.43) hr = 0.79 hr

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⇒ time = 0.025 hr

8 0
3 years ago
5-x<8;x=-3 how do you solve that?
Sergio [31]
Make sure you substitute x for 3

The equation would be:

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3 years ago
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7 0
1 year ago
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BlackZzzverrR [31]

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Step-by-step explanation:

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Crazy boy [7]

Answer:

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Let x = your original account balance.

You triple your account balance by making a deposit. This means

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Then you withdraw $28.50 from your bank account. This means that you have $(3x - 28.5) left.

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Your original account balance before you made the deposit is $6

8 0
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