Can someone please help with my maths homework? I need to estimate the value of 102.3 / 4.7

2 answers:

6 0

The answer would be 20.

102.3 can be rounded down to 100 and 4.7 can be rounded up to 5. 100 divides by 5 is 20.

The trick is to find the 2 closest numbers that you can do mental math with.

anyanavicka [17]3 years ago

3 0

OK - convert the 2 numbers to one significant figure:-

102.3 = 100
4.7 = 5

So the estimate is 100/5 = 20 answer

You might be interested in

In the diagram, the length of segment BC is 23 units.

timurjin [86]

Both sides should be the same length..

Since we know that BC = 23 you need to find the value of x and put it in the formula.

23 = 2x+7

16 = 2x

x = 8

4x + 1 + 4(8) + 1 = 33 units

4 0

3 years ago

Read 2 more answers

During the summer Andrew worked for 5 days each week he worked 8 hours each day

Tema [17]

He made $40 those 5 days.

8•5=40

7 0

3 years ago

A bicycle store costs $3850 per month to operate. The store pays an average of $45 per bike. The average selling price of each

katrin2010 [14]

Answer:33

Step-by-step explanation:

3850/(155-45)

=3850/115

=33.4

Round up to 33.

Hope this helps and please follow me;)

7 0

3 years ago

A plumber charges $50 to come to a house and $20 an hour for work time.

PolarNik [594]

Since the 50 remains the same every time, is has no letters next to it in the equation. The 20, however, is multiplied by the amount of hours, and will therefore have an h next to.

20h + 50- the answer is a.

6 0

3 years ago

Factor completly 4x^2 +8x -5

DaniilM [7]

∑ Hey, jillianwagler ⊃

Answer:

$\left(2x-1\right)\left(2x+5\right)$