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creativ13 [48]
3 years ago
13

Just this question I've tried but don't understand it

Mathematics
1 answer:
ANEK [815]3 years ago
3 0
I plugged it in to a truncated square pyramid calculator and got v=76
the formula for this shape is V=1/3(A squared+AB+B squared)H.
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Two streets bounding your triangular lot make an angle of 74∘. The lengths of the two sides of the lot on these streets are 126
ycow [4]

Answer: a) Yes, there is enough fance

b) 58.1° and 47.9°

c) The city will not approve, because 1/3 of the area is just 2220.5ft²

Step-by-step explanation:

a) using law of cosines: x is the side we do not know.

x² = 126² + 110² - 2.126.110.cos74°

x² = 20335.3

x = 142.6 ft

So 150 > 142.6, there is enough fance

b) using law of sine:

sin 74/ 142.6 = sinα/126 = sinβ/110

sin 74/ 142.6 = sinα/126

0.006741 = sinα/126

sinα = 0.849

α = sin⁻¹(0.849)

α = 58.1°

sin 74/ 142.6 = sinβ/110

sin 74/ 142.6 = sinβ/110

0.006741 = sinβ/110

sinβ = 0.741

β = sin⁻¹(0.741)

β = 47.9°

Checking: 74+58.1+47.9 = 180° ok

c) Using Heron A² = p(p-a)(p-b)(p-c)

p = a+b+c/2

p=126+110+142.6/2

p=189.3

A² = 189.3(189.3-126)(189.3-110)(189.3-142.6)

A = 6661.5 ft²

1/3 A = 2220.5

So 2300 >  2220.5. The area you want to build is bigger than the area available.

The city will not approve

7 0
3 years ago
The domain of F(x) is the set of all numbers greater than or equal to 0 and less than it equal to 2
antoniya [11.8K]
Its false cause its not the set of all numbers
7 0
3 years ago
5) 3(8+ n) - 15 = 24
scoundrel [369]
•First you multiply parentheses by 3 24+3n-15=24
•then u cancel equal terms 3n-15=0
•Move the constant to the right
3n-15=0
3n=15
•Divide both sides by 3
Answer is n=5 ☺️

8 0
3 years ago
Is 3/8 bigger then 1/2
kolbaska11 [484]
1/2 Because 4/8 is the same as 1/2 and 3/8 is smaller
5 0
3 years ago
Read 2 more answers
Which expression is equivalent to -32 3/5
RSB [31]

Answer:

See below.

Step-by-step explanation:

-32 3/5

= [(-32* 5) + 3] / 5

= -163/5 is one expression.

Another is -32.6 ( because 3/5 = 0.6).

8 0
3 years ago
Read 2 more answers
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