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ruslelena [56]
1 year ago
7

Find the modulus and the unit vector along the sum of the vectors. - r₁ +r₂ +r3 given that r₁ = 2i+j+4k - r₂ = 3i-2j+7k, r3 = 5i

+ 2j - 3k. 2​
Mathematics
1 answer:
bazaltina [42]1 year ago
8 0

j+8k

first -2i+j+4k-3i-2j+7k+5i+2j-3k

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Bella says 18 is the same as 10 ones and 8 tens
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Answer:

Bella is largely mistaken.

Step-by-step explanation:

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an isosceles triangle has angle measures of 55, 55, and 70. the side across the 70 degree angle is 10 inches long. how long are
Shtirlitz [24]

Answer:

The other sides of triangles are 8.72 in and 8.72 in

Step-by-step explanation:

 In a triangle ABC. Please find the attachment for figure.

\angle A=70^{\circ}

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Side BC=a = 10 in

Using sine law of trigonometry,

\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}

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\dfrac{10}{\sin 70}=\dfrac{b}{\sin 55}=\dfrac{c}{\sin 55}

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b=\sin 55\times \dfrac{10}{\sin 70}

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7 0
3 years ago
Y=2x+3 <br> y=3x+1 <br> solve the system of equations using substitution
Lynna [10]

Answer:

(2, 7 )

Step-by-step explanation:

Given the 2 equations

y = 2x + 3 → (1)

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Hopes this helps but is this a multiple choices questions or not:

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Sindrei [870]

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Step-by-step explanation:

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\frac{-2-8}{20-8} = \frac{-10}{12} = -5/6

3 0
3 years ago
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