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geniusboy [140]
3 years ago
10

Evaluate the expression described below if the number is 4. The difference between a number squared and the number. A. 0 B. 4 C.

12 D. 20
Mathematics
1 answer:
svet-max [94.6K]3 years ago
5 0
What the above statement is saying is:
If the number is 4, find the difference between the square of the number (the number is 4) and the number itself (the number is still 4).

The square of the number is:
The number^2
= 4^2
= 4 × 4
= 16

The difference between the square of the number and the number is:
The number^2 - The number
= 16 - 4
= 12

Hope this helps! :)
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Find the magnitude of WX for W(-2, 8, -3) and X(1, 4, -1)
zheka24 [161]

The magnitude of WX is  \sqrt{29}  ⇒ c

Step-by-step explanation:

The magnitude of XY (its length) where,

  • X=(x_{1},y_{1},z_{1})
  • Y=(x_{2},y_{2},z_{2})

is IXYI = \sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}+(z_{2}-z_{1})^{2}}

∵ W = (-2 , 8 , -3)

∵ X = (1 , 4 , -1)

- To find the magnitude of WX use the formula above

∴ x_{1} = -2 and x_{2} = 1

∴ y_{1} = 8 and y_{2} = 4

∴ z_{1} = -3 and z_{2] = -1

- Substitute these values in the rule above

∵ IWXI = \sqrt{(1--2)^{2}+(4-8)^{2}+(-1--3)^{2}}=\sqrt{9+16+4}

∴ IWXI = \sqrt{29}

The magnitude of WX is  \sqrt{29}

Learn more:

You can learn more about the position of an object in brainly.com/question/10940255

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How do i graph fractions? <br>please help
MissTica
Actually it's 
y = \frac{x+4}{3}

it's a line. so 2 points is enough

choose x so that x+4 would be divisible by 3 :)
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2) x = 5, then y = (5+4) / 3 = 3 - sketch point (5,3)
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an octagon has sides that all have a length of y. Write a simplified algebraic expression for the perimeter of the octagon in te
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Step-by-step explanation:

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natali 33 [55]

Answer:

the answer is 1 I guess

Step-by-step explanation:

2/5 - 3/5

2-3/5

1

7 0
3 years ago
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