All categories

3 years ago

Use the vectors v = 7i + 2j and w = –4i + j to find 10v + 3w

Mathematics

1 answer:

iogann1982 [59]3 years ago

3 0

Answer:

v = 7i + 2j

w= - 4i + j

10v = 10(7i + 2j) = 70i + 20j

3w= 3(- 4i + j) = -12i + 3j

10v + 3w

= 70i -12i + 20j +3j

= 58i + 23j

Hope this helps.

You might be interested in

Students make 76.5 ounces of liquid soap for a craft fair they put the soap in 4.5 ounces bottles and sell each bottle for 5.59

liberstina [14]

Answer:

95.03

Step-by-step explanation: Divide 76.5 by 4.5

Now you have 17

Now, multiply 17 by 5.59.

Good job, these students are now successful coronavirus fighters.

8 0

3 years ago

What is the value of x with clear working out please?

nirvana33 [79]

Answer:

Answer:  x is 46° 

Step-by-step explanation:

• Let's first find Angle ACB

${ \rm{ \angle ACB + 23 \degree + 90 \degree = 180 \degree}} \\ \\ { \rm{ \angle ACB = (180 - 90 - 23) \degree}} \\ \\ { \underline{ \rm{ \: \angle ACB = 67 \degree}}}$

• From alternative angles, x = Angle BAC.

• Since AB = AC, then Angle ABC = Angle ACB

${ \rm{x + \angle ABC + \angle ACB = 180 \degree}} \\ \\ { \rm{x + 67 \degree + 67 \degree = 180 \degree}} \\ \\ { \rm{x + 134 \degree = 180 \degree}} \\ \\ { \boxed{ \rm{x = 46 \degree}}}$

5 0

3 years ago

Read 2 more answers

Patrick built a robot that is 0.8 meters tall. Adelaide built a robot that is 2 feet and 9 inches tall. Who has the taller robot

Ugo [173]

Answer:

Adelaide's robot is 83.82 centemetres = 0.84 meters

Step-by-step explanation:

2 feet = 60.96cm + 9 inches = 22.86cm therefore Adelaide's robot is taller

3 0

3 years ago

What's the single exponent for K^8 x K^9

gregori [183]

K^8 • K^9 = K^(8+9) = K^17

3 0

3 years ago

A cylinder has a radius of 6 inches and a height of 2 feet. Which of the following should be done first in order to find the vol

zvonat [6]

The significant components, the radius and the height, are in inches and feet respectively, you'd need to convert them both to the same unit, whichever it may be, meters or feet or inches or millimeters, so long is the same, then use the volume of a cylinder equation to get it.

7 0

3 years ago