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2 years ago

Worth 20 points, will thank

Mathematics

1 answer:

Leno4ka [110]2 years ago

7 0

Answer:

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Step-by-step explanation:

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cindi bought a pizza. The pizza was cut into 16 pieces. She ate two of them and gave her friend carl three pieces. How many piec

ELEN [110]

Answer:

11 peices left

Step-by-step explanation:

16-(2+3)

16-(5)

16-5=11

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3 years ago

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What is 3/5 divided by 2 1/2 by the lowest quotient

Brilliant_brown [7]

Answer:

Step-by-step explanation:

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3 years ago

I need help with one more of these.

nataly862011 [7]

I think it is yz but I and not completely sure

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2 years ago

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Show that if u+v and u-v are orthognal, then the vectors u and v must have the same length.

pashok25 [27]

Answer with Step-by-step explanation:

We are given that

u+ v and u-v are orthogonal

We have to prove that u and v must have the same length.

When two vector a and b are orthogonal then

$a\cdot b=0$

By using the property

$(u+v)\cdot (u-v)=0$

We know that

$(a+b)\cdot (a-b)=\mid a\mid^2-\mid b\mid^2$

$\mid u\mid ^2-\mid v\mid^2=0$

$\mid u\mid^2=\mid v\mid^2$

Magnitude is always positive

When power of base on both sides are equal then base will be equal

Therefore,

$\mid u\mid=\mid v\mid$

Hence, the length of vectors u and v must have the same length.

5 0

3 years ago

Help pleaseeeeeeeeeeeeee

marin [14]

Answer:

-2(9+32n)

Step-by-step explanation:

Both the 18 and 64 n are negative, and that is the only answer choice that results in two negative numbers.

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2 years ago

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