Answer:
x = 5 , y = 5
Step-by-step explanation:
Using the sine and cosine ratios in the right triangle and exact values.
sin30° = , cos30° = , then
sin30°= = = ( cross- multiply )
2x = 10 ( divide both sides by 2 )
x = 5
and
cos30° = = = ( cross- multiply )
2y = 10 ( divide both sides by 2 )
y = 5
Answer:
the ratio of boys to girls is 3:7 or 30:70
Step-by-step explanation:
Answer:
x = 12
y = 4
Step-by-step explanation:
x + y = 16
x - y = 8
y + 8 = x
Replace x with y + 8 in the new equation
8 + 2y = 16 ----> we can minus 8 on both sides
2y = 8 -----> divide both sides by 2
y = 4
Now for the x value
x + 4 = 16 ----> minus 4 on both sides
x = 12
A whole number that would support Cindys claim would be 2 because if u do the ,math it would be 8/24 which would be .333 repeating which is simplify to 1/3 and i do not know a number that would not work
I=PRT
r=rat
P=present amount
I=interst
t=time in yeare
2 years
16%
3000
I=2*3000*0.16
I=$960