D.9% C.7%
11. If a, b and care numbers such that a:b:c=2:3:5 and b= 30 then, find the
sum of a+b+c?
a. 50
b. 60
d. 100
12. If A:B = 7:8 an B:C =12:7,find A:C in its simplest form.
a. 2:3
b. 3:2
d. 4:5
c. 90
c. 19:6
6
4d-m
M+2n
7
3
C.
a.
3
3
13. Three members d, m, n are in the ratio 3:6:4. Find the value of
b.
d.
14. The ratio of the number of pigs to the anumber of horse in a farm is
2 to 3. If there are 24 horses, what is the number of pigs?
a. 72
b. 48
d. 16
15. (x+4), (x+12), (x-1) and (x+5) are, in proportion. Find the value of x.
b. 12
c. 36
d.. 20
c. 16
a. 15
111

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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answers

rauschg

rauschg · hand

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step-by-step explanation:

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d