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V125BC [204]
4 years ago
8

a scale drawing for a construction project uses a scale of 1 inch= 4 feet. On the model, the dimensions for the family room are

7.5 inches by 12 inches. what is the area of the actual family room
Mathematics
1 answer:
DedPeter [7]4 years ago
7 0
1 inch = 4 ft

so 7.5 inches = (7.5 * 4) = 30 ft
and 12 inches = (12 * 4) = 48 ft

A = L * W
A = 30 * 48
A = 1440 square ft <=
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Answer:

See below

Step-by-step explanation:

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3 years ago
Factorise the following by taking out a common binomial factor.<br> 7(x - 3) - (x + 3)(x - 3)
g100num [7]

Step-by-step explanation:

7(x - 3) - (x + 3)(x - 3)

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(x - 3)(7 - x - 3)

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7 0
3 years ago
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In a lumberjack competition, a contestant is blindfolded and then spun around 9 times. The contestant then immediately tries to
Kazeer [188]

Answer:

9.364 is the expected number of points.

we can approximate this to 10 points if we want a whole number

Step-by-step explanation:

We have these variables:

[0,5,10,15]

P(x= 0) = p(y>20)+p(y<-20) = 2p(y>20)

P(x=5) = p(-20<=y<=10)+p(10<=y<=20) = 2p(10<=y<=20)

P(x=10) = p(-10<=y<=-3)+p(3<=y<=10) = 2p(3<=y<=10)

P(x=15) = p(-3<=y<=3) = 2p(0<=y<=3)

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Therefore

P(x= 0) = 2(y>20)

= 2p(z>2) = 2(1-p<=2)

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= 0.0456

P(x= 5)

= 2p(10<=y<=20)

= 2p(1<=z<=2)

= 2(0.9772-0.8413)

= 0.2718

P(x= 10)

= 2p(3<=y<=10)

= 2p(0.3<=z<=1)

= 2(0.8413-0.6179)

= 0.4468

P(x = 15)

= P(0.6179-0.3821)

= 0.2358

To get expected value of Y

0(0.0456)+5(0.2718)+10(0.4468)+15(0.2358)

= 1.359 + 4.468 + 3.537

= 9.364

E[Y] = 9.364

8 0
3 years ago
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natita [175]

Answer:

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Step-by-step explanation:

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q = ne

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Answer:

20

Step-by-step explanation:

i think hope it correct

6 0
3 years ago
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