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erma4kov [3.2K]
3 years ago
8

What is the value of x? A. 5 B. 2.5 C. 7.5 D. 10

Mathematics
1 answer:
Sever21 [200]3 years ago
6 0
The two lines are horizontal, so the two triangles in the diagram are similar because their internal angles are the same. By the proportionality of similar triangles, x/(x+5)=(x-2)/(x+1). Solve the equation, x^2+x=x^2+3x-10, x=3x-10, x=5.
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How to write two hundred eight thousand five hundred sixty-one in standard form?
mamaluj [8]
<span>704,620 I think this is how it is!
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6 0
3 years ago
2 point) what is the height of a d-heap that contains n elements? the height should be a function of n and
belka [17]
Assuming a d-heap means the order of the tree representing the heap is d.
Most of the computer applications use binary trees, so they are 2-heaps.

A heap is a complete tree where each level is filled (complete) except the last one (leaves) which may or may not be filled.

The height of the heap is the number of levels.  Hence the height of a binary tree is Ceiling(log_2(n)), for example, for 48 elements, log_2(48)=5.58.
Ceiling(5.58)=6.  Thus a binary tree of 6 levels contains from 2^5+1=33 to 2^6=64 elements, and 48 is one of the possibilities.  So the height of a binary-heap with 48 elements is 6.

Similarly, for a d-heap, the height is ceiling(log_d(n)).



6 0
3 years ago
You are choosing curtains, paint, and carpet for your room. you have 15 choices of curtains, 13 choices of paint color, and 14 c
Margaret [11]
2730

You can get this by multiplying the 3 numbers together
3 0
3 years ago
CHECK MY ANSWERS ASAP
AlexFokin [52]

Question 1:

For this case we must rewrite the following equation:

-3x + y = 5

If we add 3x to both sides of the equation we have:

y = 5 + 3x

Thus, we have that an equivalent expression is option C.

Answer:

Option C

y = 5 + 3x

Question 2:

For this case we must solve the following equation:

-5x + 5 = -40

Subtracting 5 from both sides of the equation we have:

-5x = -40-5\\-5x = -45

Dividing between -5 on both sides of the equation we have:

x = \frac {-45} {- 5}\\x = 9

Answer:

Option B

7 0
3 years ago
The chs baseball team was on the field and the batter popped the ball up. the equation b(x) = 80t - 16t^2 +3.5
stellarik [79]
First, you want to establish your equations.

L=7W-2
P=60

This is what we already know. To find the width, we have to plug in what we know into P=2(L+W), our equation to find perimeter.

<span>60=2(7W-2+W) </span>

<span>Now that we only have 1 variable, we can solve. </span>

First, distribute the 2.
60=14W-4+2W

Next, combine like terms.

60=16W-4

Then, add four to both sides.

64=16W

Lastly, divide both sides by 16


W=4

To find the length, we plug in our width.

7W-2

7(4)-2

28-2

<span>L=26</span>
7 0
4 years ago
Read 2 more answers
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