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Zielflug [23.3K]
3 years ago
12

A tree casts a shadow that is 231 cm long. Janet is 170 cm tall and she casts a shadow that is 102 cm long. How tall is the tree

?
Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
7 0

Answer:

139 cm

Step-by-step explanation:

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Help 19 points 4th grade math
Rudik [331]
#1:  214 tickets split 9 ways does not work out to an integer number.  Nobody wants 2/3 of a ticket, right?

So the trick here is to determine the first multiple of 9 greater than 214.

Note that 214/9 = 23.8.  No good.  Not an integer.

Multiply 23 by 9; we get 207.  Multiply 24 by 9; we get 216.  

So, given that we have 214 tickets already, we need 2 more, to make 216.

Check:  Is 216 divisible by 9 without a remainder?  Yes.  Then each of the 9 students will get 24 tickets.

The rest of the problems are somewhat similar to this one.

See whether you can do the next one, #2.

If you'd share your results, I'd be happy to comment on what you've done.


5 0
3 years ago
Read 2 more answers
The volume of a rectangular prism (shown below) is 48x^3+56x^2+16x Answer the following questions:
pickupchik [31]

Answer:

(a)

Length = 8x\\Width = 3x + 2\\Height = 2x + 1

(b)

P(2) = 640

(c)

Length= 16

Width = 8

Height =5

(d)

Volume = 640

Step-by-step explanation:

Given

P(x) = 48x^3 + 56x^2 + 16x

Solving (a): The prism dimension

We have:

P(x) = 48x^3 + 56x^2 + 16x

Factor out 8x

P(x) = 8x(6x^2 + 7x + 2)

Expand 7x

P(x) = 8x(6x^2 + 4x + 3x + 2)

Factorize

P(x) = 8x(2x(3x + 2) +1( 3x + 2))

Factor out 3x + 2

P(x) = 8x(3x + 2)(2x + 1)

So, the dimensions are:

Length = 8x\\Width = 3x + 2\\Height = 2x + 1

Solving (b): The volume when x = 2

We have:

P(x) = 48x^3 + 56x^2 + 16x

P(2) = 48 * 2^3 + 56 * 2^2 + 16 * 2

P(2) = 640

Solving (c): The dimensions when x = 2

We have:

Length = 8x\\Width = 3x + 2\\Height = 2x + 1

Substitute 2 for x

Length=8*2

Length= 16

Width = 3*2+2

Width = 8

Height = 2*2 + 1

Height =5

So, we have:

Length= 16

Width = 8

Height =5

Solving (d), the volume in (c)

We have:

Volume = Length * Width * Height

Volume = 16 * 8 * 5

Volume = 640

8 0
3 years ago
The rectangle is three times its width.
Airida [17]

Answer:

Length= 30 in

Width= 10 in

Step-by-step explanation:

Let the width of the rectangle be x in.

Length of rectangle

= 3 (width)

= 3x

Perimeter of rectangle= 2(length) +2(width)

80= 2(3x) +2(x)

80= 6x +2x

8x= 80 <em>(</em><em>simplify</em><em>)</em>

x= 80 ÷8 <em>(</em><em>÷</em><em>8</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

x= 10

Thus width of rectangle= 10 in

Length of rectangle

= 3(10)

= 30 in

7 0
3 years ago
Which ratio does not belong with the other three? Explain your reasoning. 4/10 2/5 3/5 6/15
JulsSmile [24]

Answer:

3/5

Step-by-step explanation:

7 0
3 years ago
If i'm in 9th grade right now what years was my 6th grade year ?
creativ13 [48]

Answer:

2017-2018

Step-by-step explanation:

5 0
3 years ago
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