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3 years ago

If x=1,y=3,z=4 evaluate x^2+y^2+z^2-3yz^2

Mathematics

1 answer:

Travka [436]3 years ago

7 0

<h3>✽ - - - - - - - - - - - - - - - ~<u>Hello There</u>!~ - - - - - - - - - - - - - - - ✽</h3>

➷ Just substitute the values in:

(1)^2 + (3)^2 + (4)^2 - 3(3)(4)^2

Simplify:

(1 + 9 + 16) - 144

Simplify further to get the answer:

answer = -118

➶ Hope This Helps You

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Step-by-step explanation:

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3 years ago

Can someone help with this math word problem.

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Answer:

Step-by-step explanation:

Time taken to eat the pizza in seconds =28×60=1680 seconds

If it takes 20seconds to lift, bite and chew,

Then the total bites taken to finish the pizza =1680/20 =84 bites

If for each bite 9cm² disappeared, then area that disappeared for 84bites =84×9cm² = 756cm²

Total area of pizza =756cm²

If area =(πd²)/4,

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d²=4×756/3.14=963.06

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7 0

3 years ago

What is the measure of ∠HFG?<br> (See attachment)

madam [21]

92 degrees

Triangle= 180 degrees
180-60-28= 92

:)

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3 years ago