Can somebody help me with this?

Mathematics

1 answer:

zheka24 [161]3 years ago

4 0

Answer:

Step-by-step explanation:

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The sum of 5 consecutive even numbers is 216. What is the third number in the sequence

alexandr1967 [171]

Hello from MrBillDoesMath!

Answer: NO solution possible!

Steps:

Let "n" be the first even number. We are told that

n + (n+2) + (n+4) + (n+6) + (n +8) = 216

The third number, the value we want, is boldfaced above.

Simplify the above equation:

5n + ( 2 + 4 + 6 + 8 ) = 216 or

5n + 20 = 216 or

5n = 196

n = 196/5 is NOT an integer value. This problem, as stated, has no solution.

Regards, MrB

4 0

3 years ago

Look at this prism and its net. Rectangular prism with length labeled 5 meters, width labeled 7 meters, and height labeled 12 me

kaheart [24]

There will be three pairs of matching sides: one pair 5x7, one pair 5x12 and one pair 12x7. We can compute the are of each side (in pairs) and then add up the total:

$A_{surf}=2\times(l \times w)+2\times(l \times h)+2\times(h \times w)$
$A_{surf}=2\times(5\times7)+2\times(5\times12)+2\times(12\times7)$
$A_{surf}=2\times35+2\times60+2\times84$
$A_{surf}=70+120+168$
$A_{surf}=358$
$A_{surf}=358m^{2}$