Answer:
x=3, y=-1. (3, -1).
Step-by-step explanation:
7x-5y=26
2x+4y=2
--------------
simplify 2x+4y=2 into x+2y=1
-------------
7x-5y=26
x+2y=1
-----------------
x=1-2y
7(1-2y)-5y=26
7-14y-5y=26
7-19y=26
19y=7-26
19y=-19
y=-19/19
y=-1
x+2(-1)=1
x-2=1
x=1+2
x=3
Answer:
41.8% is the answer
Step-by-step explanation:
Trust me
Answer:
x4+7x+3
Step-by-step explanation:
Answer: the equations are
0.02x + 0.07y = 156
y = 300 + x
Step-by-step explanation:
Let x represent the total dollar amount of phone sales that she makes.
Let y represent the the total dollar amount of computer sales that she makes.
Josiah earns a 2% commission on the total dollar amount of all phone sales he makes, and earns a 7% commission on all computer sales. She earned a total of $156 in commission. This means that
0.02x + 0.07y = 156 - - - - - - - - - - -1
Josiah had $300 more in computer sales than in phone sales. This means that
y = 300 + x
Answer:
:1
Step-by-step explanation:
Ratio of height of two cylinders are 3:1
Let C2 has the height x
then height of C1 is 3x
Let r1 is the radius of C1
and r2 is the radius of C2
As given that volume of both are equal
Also we know that formula for the volume of the cylinder is
V= π r²h
for C1
V= π (r1)²h
for C2
V=π (r2)²h
As volume of both are same so equating them
π (r1)²h1 = π (r2)²h2
as h1 =3x and h2=x
putting values
π (r1)²(3x) = π (r2)²(x)
cancelling out π and x from both side of the equation
3(r1)²= (r2)²
Taking square root of both sides give

r1 (
) = r2
or
r1 : r2 =
:1