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joja [24]
3 years ago
15

If (3+√5)(4-√5)=a+b√5, where a and b are integers, then what is the value of a + b?

Mathematics
1 answer:
defon3 years ago
4 0
54 = 2 x 3³
So, if a and b are integers, a=2 and b=3
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Nehal is a real estate developer, and he is designing a new neighborhood. The neighborhood will have four streets, each of which
ololo11 [35]

Answer:

240 houses

Step-by-step explanation:

Given that:

Number of streets = 4

Length of each street = 3/4 miles long

Street is divided into lots with one house built per lot

1 mile = 5289 feets

3/4 miles = (3/4) * 5280 = 3960 feets

Hence, street is 3960 feets long

Since each lot must have at least 65 feet frontage along the street:

Number of lots per street :

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Hence, maximum number of lots per street = 60 lots per street

Maximum number of houses in New neighborhoods :

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= 60 × 4

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4 0
3 years ago
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Answer:

Yes, Kedir made profit.

Step-by-step explanation:

0.30 x 200 = 60 Birr

60 Birr is more than 50 Birr

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8 0
2 years ago
Find the lateral area of the cone. radius 32 height 25
padilas [110]

Answer:

<h3>200201+1918191=9191919289+</h3>

Step-by-step explanation:

<h3>tnks </h3>

4 0
2 years ago
The sales tax on a used car is​ $168168​, and the sales tax rate is 55​%. Find the purchase price ​(the price before taxes are​
Naily [24]

Answer:

$92492.40

Step-by-step explanation:

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7 0
3 years ago
Given (64y^2)+(4x^2)+128y+16x+64=0, transform the equation into the appropriate form
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Answer:

(8y+8)²+(4x²+16)=0

Step-by-step explanation:

Given:

(64y²)+(4x²)+128y+16x+64=0

Find:

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Computation:

(64y²)+(4x²)+128y+16x+64=0

(8y)²+(2x)²+128y+16x+64=0

(8y)²+(2x)²+2(8y)(8)+2(2x)(4) + 8²=0

(8y+8)²+(4x²+16)=0

6 0
3 years ago
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