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Elina [12.6K]
3 years ago
6

Mandy picks a number between 1-20. what is the probability she will pick a number greater than 12

Mathematics
2 answers:
rodikova [14]3 years ago
7 0
Since there are 8 numbers greater than 12 (including 20), the probability would be 8/20, which can be simplified to 2/5.
I hope this helps! :)

pychu [463]3 years ago
6 0
7/20 probably. Because there are 7 numbers above 12...
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Lyrx [107]

Hey there!!

Given equation :

( x - 1 ) / 4 = ( x + 2 ) / 3

First step we will need to take is to cross-multiply. In cross-multiplication, we will have t multiply the denominator with the numerator on both the sides. In this case, we will have to multiply 4 with x + 2 and 3 with x - 1.

... 4 ( x + 2 ) = 3 ( x - 1 )

... 4x + 8 = 3x - 3

Subtract 3x on both sides.

... x + 8 = -3

Subtract 8 on both sides

... x = - 11

Hope my answer helps!

6 0
3 years ago
Please help me . Find x.
Paladinen [302]

Answer:

12) 5.96 ; 13)

Step-by-step explanation:

12). x and 5 are legs, so

opposite leg/adjacent leg = tangent 40°

5/x= tan40°,    5= x*tan40°, x= 5/tan40° ≈ 5.96

13). 15 is opposite leg

24 is hypotenuse

opposite leg/hypotenuse = sin(x)

sin(x) = 15/24

x = arcsin(15/24) ≈ 38.68°

6 0
3 years ago
On a fishing trip, mark caught twenty - four fish. He caught some rock fish averaging 2.5 pounds and some blue fish averaging 8
zloy xaker [14]
He cause 14 blue fish and 10 rock fish
14x8=112 10x2.5=25 112+25=137
7 0
3 years ago
In a class of 25 students, 18 of them brought in permission slips for a field trip.
natali 33 [55]

Answer:

A.18/25

B.72% of them brought in their permission slips

C.0.72

D.There the exact same value and we would divide by 100 to go from percentage to decimal and multiply by 100 to go to decimal to percentage Sign.

Step-by-step explanation:

3 0
3 years ago
Rewrite the expression (4x^2+5x)^2-5 (4x^2+5x)-6 as a product of four linear factors.
tensa zangetsu [6.8K]
=<span><span><span><span><span>16<span>x4</span></span>+<span>40<span>x3</span></span></span>+<span>5<span>x2</span></span></span>−<span>25x</span></span>−<span>6</span></span>
4 0
3 years ago
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