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Mathematics

1 answer:

Dominik [7]3 years ago

7 0

Answer:

122m^2

Step-by-step explanation:

Awnser is in picture along with steps

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Can anybody help me with my homework please. and explain me how to got the answer. Thanks

natka813 [3]

In the problems A-F, You multiply each of the numbers by itself. Like 9²=9×9=81

3³=3×3×3=27 6³=6×6×6=216 and so on for the other problems

G-I is 36=6² 100=10² and so on the cube is the same except you multiply the number three times by itself. I hope this helped a bit. Just ask if you still don't understand.

8 0

3 years ago

Find two consecutive positive integers such that the sum of their squares is 421 .

maria [59]

We assume the two numbers are x and (x+1)
so x^2+(x+1)^2=421
x^2+(x^2+2x+1)=421
2x^2+2x-420=0
According to the formula of quadratic
x=14 or-15
cuz we know the two numbers are integers
so x=14
therefore the other number is 15
To make sure that's correct
14^2+15^2=421

Hope that helps you!!

4 0

3 years ago

What is 3/4 of 16/21? worked out please

timofeeve [1]

Of means multiplication

So

$\frac{3}{4} \sf{of} \frac{16}{21} = \frac{3}{4} \times \frac{16}{21}$

And then simplify the numerator ad denominator

= $\frac{3 \times 16}{4 \times 21} = \frac{\ 1 \times 16}{4 \times 7}$

And simplify the numerator and denominator again

= $\frac{\ 1 \times 16}{4 \times 7} = \frac{\ 1 \times 4}{1 \times 7}$

And we are finally left with the answer which is $\frac{4}{7}$