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Alona [7]
1 year ago
12

Find EF in the trapazoid

Mathematics
1 answer:
kondaur [170]1 year ago
4 0

EF = 45

Step-by-step explanation:

Area if Trapezium = \frac{a + b}{2} h

Median = \frac{1}{2} (a + b)

Median = 5x

5x = 1/2 ((x + 3) + 78)

5x = (x + 81) / 2

10x = x + 81

9x = 81

x = 9

EF = 5x

EF = 5(9)

EF = 45

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7 0
3 years ago
Can anyone walk me through this?
Fiesta28 [93]

Assuming that we are solving in terms of n.


Start by distributing:

2(n + 5)

(2*n) + (5*2)

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2n = -12


Divide by two to finish solving:

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6 0
3 years ago
Read 2 more answers
Order number from least to greates <br> 9/5 -2.5 -1.1 -4/5 0.8 ​
Brut [27]

Answer:

Step-by-step explanation:

Start by writing these five numbers in just one format (improper fractions with denominator 10):

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-2.5 = -25/10, and

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-4/5 = -8/10, and, finally

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The smallest of these (the least) is -25/10, and

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Arranged in ascending order, we have:

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5 0
3 years ago
What is the probability of picking a 7 from a standard deck of 52 cards?
BARSIC [14]

Answer:

(c)- 4/13

Step-by-step explanation:

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each set has 1 seven each, so 4 sevens total.

Also, each type of card has 13 different cards in it

so, your answer is 4/13

8 0
3 years ago
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Alekssandra [29.7K]

Answer:

360 \div 30 = 12

Step-by-step explanation:

so Kennedy is right

8 0
2 years ago
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