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Scorpion4ik [409]
3 years ago
11

Find the measures of the angles.

Mathematics
1 answer:
Keith_Richards [23]3 years ago
7 0

Answer:

a1=90

a2=27

a3=61

a4=29

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A pyramid has a square base with sides 100 feet long. The original height was 75 feet.
viva [34]

Step-by-step explanation:

<u>Step 1:  Find the volume of the original pyramid</u>

<u />V = a^2*\frac{h}{3}

V=(100)^2*\frac{75}{3}

V=10000*25

V=250000

<u>Step 2:  Find the volume of the cut off</u>

<u />V=(20)^2*\frac{15}{3}

V = 400*5

V=2000

<u>Step 3:  Find the percent that still remains</u>

<u />250000-2000

248000

248000 / 250000

0.992*100

99.2

Answer:  99.2%

8 0
4 years ago
Read 2 more answers
[(8*9)] - (6*7)] -15
maks197457 [2]

Answer:

15

Step-by-step explanation:

Simplify the following:

8×9 - 6×7 - 15

8×9 = 72:

72 - 6×7 - 15

-6×7 = -42:

72 + -42 - 15

72 - 42 - 15 = 72 - (42 + 15):

72 - (42 + 15)

| 4 | 2

+ | 1 | 5

| 5 | 7:

72 - 57

| 6 | 12

| 7 | 2

- | 5 | 7

| 1 | 5:

Answer:  15

3 0
3 years ago
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Isabella speds $2.20 on poster boards. How many poster boards does she buy?
Mama L [17]
How much does a poster board cost? thats kind of important

5 0
3 years ago
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P(z=1.85) what is the area to the left of z= 1.85
Kisachek [45]
0.84(because 20% of the observations are about 0.84)
You've found the 80th percentile! The 80th percentile of the standard normal distribution is 0.84. That's because 80% of the observations fall below 0.84. (Note: The 80th percentile of every normal distribution is 0.84 times the standard deviation above the mean.)

 


7 0
3 years ago
Daily attendance at the water park: 346, 250, 433, 369, 422, 298
Elan Coil [88]
What do you want us to do?
Average or predict the next number of attendances
Do you want a graph??
8 0
3 years ago
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