Answer:
Number of 1-cm cube 24. Volume of solid 24 cm^2
Step-by-step explanation:
Let the numbers be x and y.
by the first statement of the question, we get , x + y = 30.,,..(1)
by the second satement, we get , x = y+ y => x=2y... (2)
from equation (2), let us put the value of x in equation (1),
x + y = 30
=> 2y + y = 30
=> 3y = 30
=> y =30/3
=> y = 10
and x=2y => x = 2*10 = 20
in short, the numbers are 10 and 20
Answer:
x = 4
Step-by-step explanation:
The base angles of an isosceles triangle are congruent, as shown in the figure.
Equating their measures, we have ...
∠A = ∠C
8x -7 = 25 . . . . substitute the given expressions
8x = 32 . . . . . add 7
x = 4 . . . . . . divide by 8
Answer:
x = -1 ,y = -5
Step-by-step explanation:
--> -2x + 3y +3x-3y = 12-13
--> x= -1
then
--> -2(-1) +3y =-13
--> 2+3y= -13
--> 3y = -15
--> y =-15/3
--> y = -5
The answer is 2
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