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Andre45 [30]
3 years ago
8

Help need Help plzzzz

Mathematics
2 answers:
WITCHER [35]3 years ago
8 0
The answer is 182 because
h =  \frac{12 + 16}{2}  \times 13 = 182
MAXImum [283]3 years ago
5 0
I don't really know sorry
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857 runners entered a race. 354 more entered before
yan [13]

Answer:

D. 1,211

Step-by-step explanation:

857 + 354 = 1,211 runners

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3 years ago
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Compare 4.5x10^6 and 2.1x10^8 explain how you can compare them
Roman55 [17]
4.5 x 10^6 = 4,500,000
2.1 x 10^8 = 210,000,000

Therefore, 4.5 x 10^6 < 2.1 x 10^8
8 0
3 years ago
What is the sum of <br> 4 1/2 + 1 3/5 in simplest form ?
olga2289 [7]

Answer:

Step-by-step explanation:

Convert the mixed numbers to improper fractions, then find the LCD and combine.

Exact Form:

61 /  10

 

Decimal Form:

6.1  

Mixed Number Form:

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3 years ago
Starting at the same point, Tom and Juanita go biking in opposite directions if Tom rides at a speed of 20 mph and Juanita rides
STatiana [176]
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6 0
3 years ago
Determine whether quadrilateral ABCD is a rhombus, a rectangle, a square, a parallelogram, or none. List all that apply. Explain
svlad2 [7]

Answer:

  • ABCD is a rhombus, and a parallelogram

==================================

<h3>Given </h3>

  • Points A(-6, - 1), B(4, - 6), C(2, 5), D(- 8, 10)

First, plot the points (see attached picture).

Then, connect all the points.

<h3>We see that:</h3>

  • Opposite sides are parallel,
  • Diagonals are perpendicular.

From our observation the figure is rhombus.

Let's confirm it with the following.

1) Find midpoints of diagonals and compare.

  • AC → x = (- 6 + 2)/2 = - 2, y = (- 1 + 5)/2 = 2
  • BD → x = (4 - 8)/2 = - 2, y = (- 6 + 10)/2 = 2

The midpoint of both diagonals is same (- 2, 2).

2) Find slopes of diagonals and check if their product is -1, this will confirm they are perpendicular.

  • m(AC) = (5 - (-1))/(2 - (-6)) = 6/8 = 3/4
  • m(BD) = (10 - (-6))/(-8 - 4) = - 16/12 = - 4/3

  • m(AC) × m(BD) = 3/4 * (- 4/3) = - 1

<u>Confirmed.</u>

So this is a rhombus and also a parallelogram but <u>not</u> rectangle or square, since opposite angles are not right angles.

5 0
1 year ago
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