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Sergio [31]
3 years ago
6

Which strategy can be used to multiply 6 x 198 mentally?

Mathematics
2 answers:
Orlov [11]3 years ago
6 0

use estimation(i think). round 198 to 200 and multiply that by 6 in your head. 2*6=12 then add the two zeros for tens and ones place. 12+0+0= 1200

hope this helped!

faust18 [17]3 years ago
5 0

if you know the tables then you can do that easily.


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Step-by-step explanation:

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Brain-list?

3 0
3 years ago
What is the area of this whole figure in square units?
IrinaK [193]
Well, it is a good and interesting question

Such areas could be calculated in a single shoot and also by dividing the whole shape into other shapes and the total area would be the sum of these areas

I prefer the way of a single shoot ...

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its upper base = 12 units
the normal height between them = 8 units

NOW

The area of a trapezoid = [(sum of bases' lengths) ÷ 2] * height
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Hope that helps
7 0
3 years ago
Determine which method works, substitution or elimination? 4x^2+3y^2=42x^2-6y^2=-3
GarryVolchara [31]

Given:

\begin{gathered} 4x^2+3y^2=4 \\  \\ 2x^2-6y^2=-3 \end{gathered}

Find the method .

Sol:

\begin{gathered} 4x^2+3y^2=4..............(1) \\  \\ 2x^2-6y^2=-3.............(2) \end{gathered}

2eq(1) + eq(2) then,

8x^2+6y^2=8

Then apply the elimination method.

\begin{gathered} 8x^2+6y^2=8 \\ 2x^2-6y^2=-3 \\ --------- \\ 10x^2=5 \\  \\ x^2=\frac{5}{10} \\  \\ x=\sqrt{\frac{1}{2}} \end{gathered}

3 0
1 year ago
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