3 years ago

Plz do all three i will give brailest and thanks.

Mathematics

1 answer:

Alja [10]3 years ago

6 0

Answer:

Step-by-step explanation:

1 =39/68

2= 1 23/52

3 = 1 1/124

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Answer:

v = 12 km/h

Step-by-step explanation:

To find how much she should increase the speed first we need to find the distance traveled:

$d = v*t$

Where:

d: is the distance traveled =?

v: is the velocity = 8 km/h

t: is the time = 15 min (9:00 to 9:15)

$d = v*t = 8 km/h*15 min*\frac{1 h}{60 min} = 2 km$

Now, we can find the speed:

$v_{f} = \frac{d}{t} = \frac{2 km}{10 min*\frac{1 h}{60 min}} = 12 km/h$

Therefore, she should increase the speed to 12 km/h to reach the office at 9:10 am.

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Answer:

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Step-by-step explanation:

The explicit formula is described by the following geometrical progression:

$f(n) = -71 \cdot 4.2^{n-1}$

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3 years ago

A system of equations is shown below:

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(3,-1) :)
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