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3 years ago

Find the component form for vector AB given the initial point A (1, 7, -9) and terminal point B (-2, 18, 4).

1 answer:

5 0

To find each of the components of AB we can find the different between the components on the terminal and initial points, doing that, we find:

AB = (-2 - 1, 18 -7, 4 - (-9)) = (-3, 11, 13).

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During a musical an orchestra is playing. As the music plays, the volume changes in the beginning of the piece can be modeled by

Alja [10]

Answer:

The numbers of measure of music played are 1 and 7

Step-by-step explanation:

Given

$s = 10|x - 4| + 50$

Required

Solve for x when s = 80

Substitute 80 for x

$80 = 10|x - 4| + 50$

Subtract 50 from both sides

$80 - 50= 10|x - 4| + 50 - 50$

$30= 10|x - 4|$

Divide through by 10

$\frac{30}{10}= \frac{10|x - 4| }{10}$

$3= |x - 4|$

Reorder

$|x - 4| = 3$

This can be split into

$x - 4 = 3$ or $x - 4 = -3$

Solve for x

$x = 4 + 3$ or $x = 4 - 3$

$x = 7$ or $x = 1$

Hence:

<em>The numbers of measure of music played are 1 and 7</em>

4 0

3 years ago

5. Xian plans to run 14 laps around a track Each lap is 400 yards. So farxian has run 1,680 yards around the track. What percent

Igoryamba

1,680 divided by 400 = 4.2
So we know that Xian has done 4.2 laps.
4.2 divided by 14 = 0.3
0.3 x 100 = 30%
Therefore, Xian has finished 30% of the run

6 0

3 years ago

A parallelogram has two

Hatshy [7]

Answer:

x + (x + 55) = 180

2x =125

The angle is 62.5 degrees

Double-Check

62.5 + (62.5 + 55) = 180

125 + 55 = 180

62.5 is the smaller angle

Step-by-step explanation:

6 0

3 years ago

What is the slope of the line whose equation is 2x−4y=10 ?

Olenka [21]

solve for y

2x−4y=10

-2x -2x subtract -2x from both sides

-4y = -2x +10

-4 -4 Divide both sides by -4 (coefficient on y)

y = -2/-4x + 10/-4

y = 1/2x - 5/2

the slope is the number on the x (coefficient)

and its 1/2

6 0

3 years ago

Read 2 more answers

Uma pipa é presa a um fio esticada que forma um ângulo de 45c com o solo. O comprimento do dia é 80m. Determine a altura da pipa

Crazy boy [7]

I SPEAK ENGLISH SIR umm pipi è presa a um fio

5 0

3 years ago