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Ymorist [56]
4 years ago
13

What is the magnitude of the resultant of z-y? x=9i-j-2k y=-6i+2j-k z=-i+5j+3k

Mathematics
2 answers:
tresset_1 [31]4 years ago
4 0

Answer is

B = 5sqrt(2)

natka813 [3]4 years ago
3 0

Answer:

5sqrt(2)

Step-by-step explanation:

Z - Y

-i+5j+3k - (-6i+2j-k)

-i + 6i + 5j - 2j + 3k + k

5i + 3j + 4k

Magnitude:

sqrt(5² + 3² + 4²)

sqrt(50)

5sqrt(2)

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a number line is divided into 8 equal parts to show eighths. A point is labeled 1/2. Name the equivalent fraction for the labele
gulaghasi [49]

Answer:

4/8.

Step-by-step explanation:

4/8 is the correct answer for this question. This is why. If you take 8 and divide it in half, your answer will be 4. Also because fractions are division so the fraction 8/2 equals 4. This means the 1/2 mark is equal to 4.

6 0
3 years ago
A company sells widgets. The amount of profit, y, made by the
vfiekz [6]

Answer:

846.06 units

Step-by-step explanation:

The amount of profit, y, made by the  company, is related to the selling price of each widget, x, by the given  equation as follows :

y = -4x^2 + 183x- 1247 ...(1)

We need to find out the maximum amount of profit  the company can make.

For maximum profit put dy/dx = 0

So,

\dfrac{d}{dx}(-4x^2 + 183x- 1247)=0\\\\-8x+183=0\\\\x=\dfrac{183}{8}\\\\x=22.87

Put x = 22.87 in equation (1). So,

y = -4(22.87)^2 + 183(22.87)- 1247\\\\=846.06

So, the maximum profit is 846.06 units.

4 0
3 years ago
Kaya used these steps to solve the equation 7 + 2x = 2(x - 1) + 4. Which choice describes the meaning of her result, 7 = 2?
Whitepunk [10]

Answer is A

7 + 2X = 2(X-1) + 4

7 + 2X = 2X-2+4

7 + 2X = 2X + 2 whether 2X = 2X-5  or 5 + 2X = 2X still  0 = 5 Or 0= -5 which is not possible

4 0
4 years ago
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fredd [130]
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5 0
3 years ago
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zysi [14]
You subtract 54-6= 48
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3 years ago
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