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barxatty [35]
3 years ago
13

Special right traingles (30, 60, 90 45, 45, 90

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
3 0

Answer:

30

Step-by-step explanation:

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Sebastian buys a gift which costs £18.20 He pays with a £20 note. (a) How much change does he receive?​
Triss [41]

Answer:

1.80

Step-by-step explanation:

i think

5 0
2 years ago
The perimeter of the rectangle below is:
blondinia [14]

Answer:

18x + 28 is the perimeter

Step-by-step explanation:

As perimeter is the som of all side

So    P = 6x+8 + 3x+6 + 6x+5 + 2x+2 + 3 + x+4

          = 6x+3x+6x+2x+x + 8+6+5+2+3+4

         = 18x + 28

5 0
2 years ago
Simplify completely
Mandarinka [93]

Answer: x+2 / x+ 9, x = -2, x=-9   ( A )

Solution:

Breakdown the problem into two sets

Step 1:  simplify x^2 -10x - 24

Factorize the above equation,

Multiply the last term (24) with the first term coefficient i.e. 1

Step 2: Then, find the factors of 24 in a way that when you add or subtract it sums up to 10

x2 - 12x + 2x - 24  >>>>  (x2-12x) + (2x-24) >>> take common

>>>> x(x-12) + 2( x-12)

Step 3:   (x + 2)  (x - 12)

Step 4: Step 1:  simplify x^2 - 3x - 108 using the same steps

x2 - 12x + 9x - 108 >>>>  take common x(x-12) + 9 ( x -12) >>>

(x + 9)  (x - 12) final product

Now, Simplify the equation as a whole

 (x + 2)  (x - 12) /  (x + 9)  (x - 12)                         Note:  (x - 12) cancels out  

=  (x + 2) /  (x + 9)     with x= -2 and x= -9

6 0
3 years ago
Help on this please.
olga55 [171]

Answer:

total - given, 360 -139 = 221

4 0
2 years ago
Suzanne can read 1 page in 3 minutes. how many pages can she read in 5 hours?
pychu [463]
If Suzanne can read 1 page in 3 minutes, that means that in ONE hour, she can read 20 pages.
1 page per 3 minute
60minutes : 3 = 20 pages
Now, multiply 20 pages by 5 hours.
20 x 5 = 100.

I hope it helps! (She's pretty slow at reading)
4 0
3 years ago
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