3 years ago

What is the value of a?

1 answer:

7 0

Because the triangles are similar, we can form the proportion 3/4 = 4/a

Cross multiply and solve for 'a'

3/4 = 4/a
3*a = 4*4
3*a = 16
3*a/3 = 16/3
a = 16/3
a = (15+1)/3
a = (15/3)+(1/3)
a = 5+(1/3)

The answer is choice B)

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How do I work this problem out.

astraxan [27]

First you should find the area of the rectangle in the middle.
A: 9 x 6 = 54
Then you can find the area of the triangle on the right.
A: 6 x 5 = 30/2 = 15
Then you can do the triangle on the right.
11-9 = 2
A: 2 x 6 = 12/2 = 6
Then you can add it all together.
15 + 6 + 54 = 74
So the area of the irregular shape is 74.

I hope this helps!

7 0

3 years ago

Read 2 more answers

You pay $10 to play the following game of chance. there is a bag containing 12 balls: three are red, five are green, and the res

Bogdan [553]

Answer:

$ -2.08 expected to lose

Step-by-step explanation:

3 25.0% $15.00 $5.00 $1.25

5 41.7% $10.00 $- $-

4 33.3% $- $(10.00) $(3.33)

$(2.08) expected to lose