3 years ago

Multiply 5( 4n -5) tell me how

Mathematics

1 answer:

rewona [7]3 years ago

8 0

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5 × 4n + 5 × -5

Simplify 5 × 4n to 20n

20n + 5 × -5

Simplify 5 × -5 to -25

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A 14-foot ladder is leaning against the side of a house.The angle the ladder makes with the ground is 50 degrees. How far is the

VashaNatasha [74]

Answer:

9 ft

Step-by-step explanation:

You can use cosine to solve this, which is adjacent over hypotenuse. The ladder forms a triangle with the house, and the side you need to solve for is adjacent to the angle. You can set up the equation:

cos(50)=x/14

Then you multiply 14 by cos(50) and get almost 9 ft (rounding to the nearest tenth of a foot).

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3 years ago

Learning goal: to understand the rules for computing dot products. let vectors a=(2,1,−4), b=(−3,0,1), and c=(−1,−1,2). part a -

miv72 [106K]

For this case we have the following vectors:
$a = (2,1, -4)

b = (- 3,0,1)

c = (- 1, -1,2)$
The dot product of two vectors is a scalar.
The point product consists of multiplying component by component and then adding the result of the multiplication of each component.
For the product point of the vectors a and b we have:
$a.b = (2,1, -4). (- 3,0,1)

a.b = (2) (- 3) + (1) (0) + (-4) (1)

a.b = - 6 + 0 - 4

a.b = - 10$
Answer:
The product point of the vectors a and b is:
$a.b = - 10$

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3 years ago

One half of the sum of 7 and k

igomit [66]

The answer could be (7+k)÷2

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3 years ago

Y=-1/2x+1 and y=1/3+6

-Dominant- [34]

If your teacher taught rise over run, then for the graphs:

y=-1/2x+1
start at y intercept of 1, then down 1, right 2 all the way, same for the other side but reversed.

y= 1/3+6
start at y intercept of 6, then up 1, right 3 all the way, same for the other side but reversed.

One solution: (-6,4)

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3 years ago

Read 2 more answers

A bus makes a stop at 2:30, letting off 13 people and letting on 5. The bus makes another stop ten minutes later to let off 4 mo

Alla [95]

Answer:14

Step-by-step explanation:

13+5-4=14 No 1 more person got on.

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3 years ago