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3 years ago

© If x = 2 and y=5, evaluate the following expression: 3(x + y)

Mathematics

2 answers:

scZoUnD [109]3 years ago

5 0

The answer to this is 21

Gwar [14]3 years ago

3 0

Answer:

Step-by-step explanation:

3(2 + 5)

3(7)

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3 years ago

Solve for x:<br> 4x+1=5x-2

Rom4ik [11]

Answer:

x=3

Step-by-step explanation:

4x+1 = 5x-2

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3 years ago

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Please HELP! I DON'T KNOW HOW CAN I SOLVE THIS

Wewaii [24]

Answer:

Step-by-step explanation:

The Pythagorean Theorem:

$leg^2+leg^2=hypotenuse^2\to a^2+b^2=c^2$

$41.\\\\a=1,\ b=1,\ c=x\\\\x^2=1^2+1^2\\\\x^2=1+1\\\\x^2=2\to x=\sqrt2$

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$44.\\\\a=4,\ b=x,\ c=8\\\\4^2+x^2=8^2\\\\16+x^2=64\qquad\text{subtract 16 from both sides}\\\\x^2=48\to x=\sqrt{48}\\\\x=\sqrt{16\cdot3}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\x=\sqrt{16}\cdot\sqrt3\\\\x=4\sqrt3$

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3 years ago

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LiRa [457]

Answer:

8 N + 2

Step-by-step explanation:

==> 8 N + 2

-----------_________-------------

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2 years ago

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horsena [70]

Answer:

y=1/2x-4.5

Step-by-step explanation:

y=mx+b

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3 years ago