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3 years ago

two vertical vectors one with upward direction and 150 units and one with downward direction of 120 units

Mathematics

1 answer:

Vlada [557]3 years ago

7 0

Step-by-step explanation:

two vertical vectors one with upward direction and 150 units and one with downward direction of 120 units,

the resultant of the vectors = 150-120 = 30 units

with upward direction.

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Is 25x²-40xy+16y²a perfect square number? why?

Crank

Answer:

yes

Step-by-step explanation:

25x² - 40xy + 16y² can be factored as

(5x - 4y)² ← a perfect square

8 0

2 years ago

A cylinder has a volume of 105 cubic centimeter what is the volume of a cone with the same base and height?

pychu [463]

Answer:

Step-by-step explanation:

The formula of a volume of a cylinder:

$V_1=\pi r^2H$

r - radius

H - height

The formula of a volume of a cone:

$V_2=\dfrac{1}{3}\pi r^2H$

If the cylinder and the cone have the same base (radius) and the same height, then the volume of the cone is three times smaller than the volume of the cylinder.

$V_2=\dfrac{1}{3}\underbrace{\pi r^2H}_{V_1}$

Therefore:

$V_2=\dfrac{1}{3}V_1\toV_2=\dfrac{1}{3}\cdot105\ cm^3=35\ cm^3$

5 0

3 years ago

for the school play four rows of chairs are set up there are 22 chairs in each row how many chairs are in all

allsm [11]

There are about 88 chairs in all.
All you have to do is 22x4 which equals 88. :)

7 0

3 years ago

Read 2 more answers

Use distribute property and simplify<br> Help me please

stellarik [79]

Answer:

104

155

180

Step-by-step explanation:

an easy way is to solve what is in the parenthesis then multiply by the outside number

but if you need to use the distributive property:

1. 4 x (20 - -6)

(4 x 20) - (4 x -6) = 80 - -24 = 80 + 24 = 104

2. -5 x (24 - -7)

(-5 x 24) - (-5 x -7) = -120 - 35 = 155

3. 12 x (-30 + 45)

(12 x -30) + (12 x 45) = -360 + 540 = 180

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3 years ago

Read 2 more answers

Plz help I have an exam

RUDIKE [14]

Oh okie so I can see you in the first week or so

4 0

3 years ago