Answer:
x=4.5 and y= -6
Step-by-step explanation:
2x+5y= -21
-2x+3y= -27
add the two equations: 8y= -48
y=-48/8= -6
sub for y in 2x+5y= -21
2x + 5(-6)=-21, 2x-30= -21
2x= -21+30= 9
x= 9/2=4.5
Answer:
12 m
Step-by-step explanation:
The formula for the area of a triangle is ...
A = 1/2bh . . . . . b represents the base; h represents the height
We are told that the height is 5 m less than the base, so we have ...
42 = (1/2)(b)(b -5)
84 = b(b-5) . . . . . . . . multiply by 2
We want two factors of 84 that differ by 5. The factors are ...
84 = 1·84 = 2·42 = 3·28 = 4·21 = 6·14 = 7·12
The relevant factors are 7 and 12, so now we know b-5 = 7 and b = 12.
The length of the base is 12 m.
Answer:
it will be 12 your welcome :)
Step-by-step explanation:
Answer:
4s + g = 76.00
4(9)+ g=76.00
36+g=76.00
36-36+g=76-36
g=40 /4
g=10
Step-by-step explanation:
106.00-30=76.00
s= shoes 9.00
g= games
4s + g = 76.00
4(9)+ g=76.00
36+g=76.00
36-36+g=76-36
g=40 /4
g=10
38/35 * 1881/1 * 45/44
= 3216510 / 1540
= 321651 / 154
divide both top and bottom by 11:
= 29241/14 Answer