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Mrrafil [7]
3 years ago
15

Which answer choice?

Mathematics
1 answer:
Llana [10]3 years ago
6 0

Answer:

B or C,i think. I'm not sure though

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A car takes 4 hours to reach a destination traveling at a speed of 63 km/h. How long will it take to cover the same distance if
Gre4nikov [31]

Answer:

It will take 4.5hrs to cover the same distance

The constant of variation,k=252

Step by step explanation

Given that,

speed =  \frac{distance}{time}

From the question

Time=4hr

Speed=63km

By substitution we obtain,

63=  \frac{distance}{4}

Cross multiplying we get,

distance=63 \times 4

distance=252km

Now,

speed=56km

Distance Covered=252km

By substitution:

We obtain,

56= \frac{252}{time}

Cross multiply

56\times  time=252

Divide through by 56

time= \frac{252}{56}

time=4.5hrs

From the formula,

speed= \frac{distance}{time}

Which means that, speed and time varies inversely.

speed\propto \frac{1}{time}

Let k be variation constant

This implies that

speed = k \times  \frac{1}{time}

k=speed \times{time}

Taken,

Time=4hrs

speed=56km

k=56\times4

k=252

4 0
3 years ago
Michael can bike 2 miles in 12 minutes how long will it take him to bike 7 miles
stich3 [128]

42 minutes for 7 miles

6 0
2 years ago
What is the greatest possible error if irina measured the length of her window as 3.35 feet? 0.5 0.05 0.005 0.0005
AlladinOne [14]

3.35 feet have a maximum inaccuracy of 0.005 feet.

The correct option is C.

<h3>What is error analysis?</h3>

When students consistently commit mistakes, an approach known as error analysis is frequently employed to determine the root of the problem. Reviewing student work is the first step in the process, after which misunderstood patterns are sought out. Mathematics mistakes can be conceptual, procedural, or factual, and they can happen for a variety of reasons.

<h3>Given:</h3>

The window is 3.35 feet long.

Find the biggest error you can

<h3>According to the given data:</h3>

Half of the measuring unit is considered to be the maximum amount of measurement error.

3.35 feet are calculated to the nearest centimeter, or 0.01 feet

Consequently, the largest conceivable error is equal to half of the measurement unit.

= .01/2

= .005

Therefore, the maximum inaccuracy for 3.35 feet is 0.005 feet.

To know more about error analysis visit:

brainly.com/question/1643325

#SPJ4

4 0
2 years ago
10 x 4 ones = how many ones
Alisiya [41]
The product will be 40 I believe?
3 0
3 years ago
I need help with point slope formula bad
NISA [10]
Ok so this question:
y + 1 = - ( x - 2 )        (distribute the negative inside the parenthesis)
y + 1 = -x + 2             (substitute the y= -1)
-1 + 1 = -x + 2
0 = -x + 2                   (take two to the other side)
-2 = -x                        (divide the negative away from x)
2 = x

3 0
2 years ago
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