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Anna007 [38]
3 years ago
6

Plz plz plz help i feel so dumb doing this

Mathematics
1 answer:
Lemur [1.5K]3 years ago
3 0

Answer:

the last side is 30 inches

Step-by-step explanation:

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For question 3, use the Pythagorean Theorem.
Juliette [100K]

Step-by-step explanation:

can't really use the Pythagorean because you don't know this is a right triangle.

use the fact that they are similar

so

3/6 = x/12 where x is FE

cross multiply

6x = 36 therefore FE = 6

then 6/12 = y/9 where y is FD

cross multiply

12y = 54 = 54/12 therefore FD = 4.5

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3 years ago
If 4 people each make a piece of dough and every 10days from each dough make 4 more; how many will there be after 20days
lisov135 [29]
There will be 16 pieces of dough
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3 years ago
Fractional form of 0.8
Vika [28.1K]

Answer:

8/10

Step-by-step explanation:

6 0
3 years ago
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What is the answer to this question in SSS, SAS, AA, or none
suter [353]

Answer:

Step-by-step explanation:

40/32 ?=? (40 + 12.5) / (32 + 10)

  1.25  ?=? 52.5 / 42

   1.25   =  1.25

similar via SAS

6 0
2 years ago
A manufacturing plant uses light bulbs whose life spans are normally distributed, with mean and standard deviation equal to 500
meriva

Answer:

602.50 hours

Step-by-step explanation:

Given that a  manufacturing plant uses light bulbs whose life spans are normally distributed, with mean and standard deviation equal to 500 and 50 hours,

It was decided to replace the bulbs so that no more than 2% of the bulbs to burn out between replacement periods

i.e. we have to construct 98% confidence interval right tailed to get this.

Z value is 2.05 for this (Upper tailed 0.98 probability)

Hence margin of error = 2.05 (std dev)\\=2.05(50)\\= 102.50

The upper bound for this would be

500+102.50 =602.50

So to keep below 2% the bulbs to burn out it should be replaced before 602.50 hours.

4 0
3 years ago
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