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Llana [10]
4 years ago
9

Please help x

Mathematics
1 answer:
seraphim [82]4 years ago
5 0
7) (-30x^2 -20)/3x^2-3
8) squareroot(20b+3)
9) (S-d)/2(symbol for pi)×d

(i could not fit 7,8 and 9 into the picture)

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Estimate - Answer __
NeTakaya

Answer:

6.0666

Step-by-step explanation:

273÷45=6.0666

6 0
4 years ago
A pilot can see the runway she is about to land on directly ahead. When looking at each end of the runway, the angles of depress
Lostsunrise [7]
First, we get the length of the runway in which the pilot had seen a 45° by using the trigonometric formula of tangent. 
                                    tan 45° = 1,500 / x
The value of x from the equation is 1500 ft. 
We do the same for the 42°
                                   tan 42° = 1,500 / y
The value of y is equal to 1665.92 ft. To determine the length of the runway, we subtract the lengths calculated and this will give us an answer of 165.92 ft. 
3 0
3 years ago
Read 2 more answers
how many 4 letter words can you make from a list of 12 letters, if you use each letter only once in each word?​
fiasKO [112]

Answer:

it would be 3 because if you list words then just divide 12 by 4 and you get 3

7 0
3 years ago
The area of a rectangle is expressed as ​x4​ ​ − 16​y^4​, determine & state the length and the width of the rectangle, expre
Bad White [126]

Answer:

Step-by-step explanation:

16 = 2 *2 * 2 * 2 = 2⁴

16y⁴ = (2y)⁴

x⁴ - 16y⁴ = x⁴ - (2y)⁴

              = (x²)² - [ (2y)² ]²    

 {Use identity = a² -b² =(a +b)(a- b). Here a =x² & b =(2y)²}

              = (x² + (2y)² ) (x² - (2y)² )  

               = (x² + 4y²) (x² - 4y²)

7 0
3 years ago
5/6 of 18 pencils equals
MAVERICK [17]
5/6 x 18
=90/6
=15

5/6 of 18 pencils equals 15.
3 0
4 years ago
Read 2 more answers
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