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ivanzaharov [21]

3 years ago

10

Kwanzaa is celebrated for 7 days each year. Kwanzaa was celebrated for the first time in 1966. What is the total number of days

that Kwanzaa has been celebrated so far?

1 answer:

IceJOKER [234]3 years ago

6 0

Answer: 378 days or 371 depending on off it has happened this year or not

Explanation:
2020-1966=54 years
2019-1966=53 years
54x7=378
53x7=371

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The base of a triangle exceeds the height by 3 cm if the area is 170 cm² what is the length of the base and the height of the tr

Strike441 [17]

Hey there!!

How do we find the area of a triangle?

Ans - Formula = ( 1 / 2 ) ( base ) ( height )

In the question, it states the base exceeds the height by 3 cm

Let's take the height as ' x '

The, the base of the triangle would be ' x + 3 '

It's area = 170 cm²

Let' get this into an equation :

( 1/2 ) ( x ) ( x + 3 ) = 170

... ( x / 2 ) ( x + 3 ) = 170

... ( x² + 3x / 2 ) = 170

Multiplying by 2 on both sides

... x² + 3x = 340

Subtract 340 on both sides

... x² + 3x - 340 = 0

We can write this as

... x² - 17x + 20x - 340 = 0

... x ( x - 17 ) + 20 ( x - 17 ) = 0

... ( x + 20 ) = 0

... ( x - 17 ) = 0

... x = -20

... x = 17

As the value can not be in negatives, we take x as 17

The value of height = 17 cm

The value of the base = 20 cm

Hope my answer helps!!

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A train traveled 30 miles at an average speed of 60 mi/h ind the time taken for the trip

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1/2 hour. 30/60 = 1/2 3 divided by 6 is 1/2 since it's not possible for it to be 1

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Tim drove 217 miles in 3.5 hours. Emily drove 244 miles in 4 hours. Who drove faster?

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Answer:

Tim

Step-by-step explanation:

Tim drove 62 miles per hour you get this by dividing 217 by 3.5 and then you divide Emily's. 244/4 and you get 61

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PLEASE HELP: The mass of a ball is 128 g. It has a density of 0.5 g/cm³. What is the volume of the ball? Show your work and plac

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Answer:

Part 1) The volume of the ball is 256 cm³

Part 2) The radius of the ball is 3.94 cm

Step-by-step explanation:

Part 1) we know that

The density is equal to divide the mass by the volume

D=m/V

Solve for the volume

The volume is equal to divide the mass by the density

V=m/D

In this problem we have

m=128 g

D=0.5 g/cm³

substitute

V=128/0.5=256 cm³

Part 2) what is the radius of the ball?

we know that

The volume of the sphere (ball) is equal to

$V=\frac{4}{3}\pi r^{3}$

we have

$V=256\ cm^{3}$

assume

$\pi =3.14$

substitute and solve for r

$256=\frac{4}{3}(3.14)r^{3}$

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$r^{3}=768/(12.56)$

$r=3.94\ cm$

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3 years ago

All the place value of 12,354.897

frutty [35]

All the place values of 12, 354.897 are as follows: 12 thousands, 3 hundred, 5 tens, 4 ones, 0.8 tenths .09 hundredths, .007 thousandths.

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