3 years ago

What is the value of -3r+8 when r=4?

Mathematics

2 answers:

dem82 [27]3 years ago

8 0

-3 (4) + 8
-12 + 8
The answer is -4

Ronch [10]3 years ago

7 0

Substitute r into the equation:

-3*4+8=
-12+8=
=-4

Answer: -4

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Varvara68 [4.7K]

y= 63-11

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move -156 to the other side

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3 years ago

*If diagonal of a square is of length 10√2 cm then the perimeter of square is ...............cm.*

Artyom0805 [142]

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Step-by-step explanation:

x - is the side of the square

$x^{2} +x^{2} =(10\sqrt{2})^{2} \\2x^{2}} =200\\2x^{2} \div 2=200 \div 2 \\x^{2} =100\\x=\sqrt{100} \\x=10 \: [cm] - side \: of \: a \: square$

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