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2 years ago

Let v be a vector with initial point (-5, -11) and terminal point (6,2). What is v?

Mathematics

2 answers:

White raven [17]2 years ago

4 0

Answer-The vector is

→

−

→

and the magnitude is

Explanation:

Let the point

(

−

)

and

(

−

)

Then,

−−→

(

−

(

−

)

−

)

(

−

)

The magnitude of

−−→

∣

−−→

∣

√

(

)

(

−

)

Step-by-step explanation:

dedylja [7]2 years ago

4 0

Answer:

It’s B

Step-by-step explanation:

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2 years ago

Which expression is equivalent to 14a + 8?

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Vsevolod [243]

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Calculate the length b to two decimal places.

Andrej [43]

Answer:

B. 21.64

Step-by-step explanation:

We have been given a triangle and we are asked to find the length of AC (b).

We will use law of cosines to find the length of side AC.

$c^{2}=a^{2}+b^{2}-2ab \text{ cos }\theta$

Upon substituting our given values in the formula we will get,

$(AC)^{2}=15^{2}+12^{2}-2\times 15\times 12 \text{ cos}(106)$

$(AC)^{2}=225+144-360\text{ cos}(106)$

$(AC)^{2}=369-360(-0.275637355817)$

$(AC)^{2}=369+99.22944809412$

$(AC)^{2}=468.22944809412$

Upon taking square root of both sides of our equation we will be get,

$AC=\sqrt{468.22944809412}$

$AC=21.6386101238993629\approx 21.64$

Therefore, the length of b is 21.64 and option B is the correct choice.

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2 years ago

Write in numbers: seven times the quotient of 8 and 5

miv72 [106K]

Answer:

7(8×5)

7(40)

7×40

=280

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