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natka813 [3]
3 years ago
11

19. A cross section of a water trough is in the shape of trapezoid with bases measuring 4 m and 12 m. what is the length of the

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0

Given:

The bases of trapezoid measuring 4 m and 12 m.

To find:

The median of the trapezoid.

Solution:

The median of the trapezoid is the average of its bases.

\text{Median}=\dfrac{\text{Upper base + Lower base}}{2}

The bases of trapezoid measuring 4 m and 12 m. So, the median of the trapezoid is:

\text{Median}=\dfrac{4+12}{2}

\text{Median}=\dfrac{16}{2}

\text{Median}=8

Therefore, the correct option is C.

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No work needs to be shown. just please help.
coldgirl [10]

Answer:

a=13

b=5

c=16.25

d=26.25

Step-by-step explanation:

4 0
4 years ago
(PLEASE HELP)An elevator car in a skyscraper can hold at most 15 people. For safety reasons, each car can carry a
natali 33 [55]

Answer:

70x + 25y + 4x + 4y \leqslant 1500

where x = number of adults

y = number of children

and the extra weights of 4kg of each person.

8 0
3 years ago
A chemical company makes two brands of antifreeze. The first brand is 45% pure antifreeze, and the second brand is 95% pure anti
Dimas [21]

Answer:

42 gallons 45% antifreeze

28 gallons 95% antifreeze

Step-by-step explanation:

If x is volume of 45% antifreeze, and y is volume of 95% antifreeze, then the total volume is:

x + y = 70

And the total amount of antifreeze is:

0.45 x + 0.95 y = 0.65 (70)

Solving by substitution:

0.45 x + 0.95 (70 − x) = 0.65 (70)

0.45 x + 66.5 − 0.95 x = 45.5

21 = 0.5 x

x = 42

y = 28

7 0
3 years ago
All 150 eighth grade students at a local middle school were asked how many hours they studied during the week. Each row of the t
DENIUS [597]

Answer:

Row 2

Step-by-step explanation:

To find the mean, we add all the numbers and divide by the number of numbers

Row 1:  

(6+5+3+0+4)/5 = 18/5 = 3.6

Row 2:  

(4+5+3+5+6)/5 = 23/5 = 4.6

Row 3:  

(7+1+4+5+3)/5 = 20/5 = 4.0

Row 4:  

(4+2+5+6+3)/5 = 20/5 = 4.0

The greatest mean , or the largest mean is 4.6  or Row 2

6 0
4 years ago
Read 2 more answers
Is Figure B a scale copy of Figure A? Choose 1 answer: (Choice A) Yes (Choice B) No
sladkih [1.3K]

Answer:

no

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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