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Elenna [48]
3 years ago
14

21. Find the measures of the numbered angles.

Mathematics
2 answers:
mixas84 [53]3 years ago
8 0
1 , 2, 3 are 76 and 4 is 104 .
rodikova [14]3 years ago
5 0

Answer:

1: 76°

2: 76°

3: 104°

4: 76°

Step-by-step explanation:

1: 76°

2: 76°

3: 104°

4: 76°

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Find the volume of the rectangular prism below 3.6ft, 2.7ft, 8.1ft
Savatey [412]
Answer:

78.732

Step-by-step explanation:

Volume is length x width x height so
3.6 x 2.7 x 8.1 is 78.732
3 0
2 years ago
The contents of seven similar containers of sulfuric acid are 9.8, 10.2, 10.4, 9.8, 10.0, 10.2, and 9.6 liters. find a 95% confi
Kamila [148]
The confidence interval is from 9.81 to 10.19.

We first find the mean of the data:

<span>(9.8+10.2+10.4+9.8+10.0+10.2+9.6)/7 = 10

Next we find the standard deviation:
</span>σ=√([<span>(9.8-10)^2+(10.2-10)^2+(10.4-10)^2+(9.8-10)^2+(10-10)^2+(10.2-10)^2+(9.6-10)^2]/7) = 0.262

The z-score for 95% confidence is found by
1-0.95 = 0.05; 0.05/2 = 0.025; from the z-table, it is 1.96.

The confidence interval is calculated using
</span>x\pm z\times (\frac{s}{\sqrt{n}})&#10;\\&#10;\\10 \pm 1.96(\frac{0.262}{\sqrt{7}})=10\pm 0.1941<span>
</span>
7 0
2 years ago
Simplify. remove grouping sbols and combine like terms
harina [27]

Answer:

5a^2+12b^2-40b

Step-by-step explanation:

First distribute the -4 to the 2b and -3b. This leaves you with 5a^2-8b+12b(b+4)

Now you can distribute the 12b to b and +4. This leaves you with 5a^2-8b+12b^2+48b

Now you can combine your like terms leaving you with 5a^2+12b^2-40b.

3 0
2 years ago
Solve and reduce to lowest terms: x =<br> Please don't make it to long
dusya [7]

Answer:

2/11

Step-by-step explanation:

6 = 2 x 3

6/11 x 1/3

= ( 6 x 1 )/( 11 x 3 )

= ( 2 x 3 x 1 )/( 11 x 3 )

Cancel 3 in both numerator and denominator.

= ( 2 x 1 )/( 11 )

= 2/11

4 0
2 years ago
Freddy has a shelf that is 72/5 inches wide. How many catalogs can freddy arrange on the shelf if each catalog is 4/5 of an inch
Leni [432]
Hey!

72/5 ÷ 4/5 

All you have to do is divide 72 by 4 because the denominator is the same.

72 ÷ 4 = 18

Answer ⇒ 18 catalogs

Hope this helps! :)
4 0
3 years ago
Read 2 more answers
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