Twin brothers, Andy and Brian mow their grandparent's lawn together in 12 minutes. Brian could mow the lawn himself in 10 minute
s more than it would take Andy. How long would it take each person to mow the lawn alone?
1 answer:
Let
x = time of Byran's work
x + 10 = time of Andy's work
Rate is usually expressed a reciprocal. The total rate will be 12 minutes.
1/x + 1/(x + 10) = 1/12
The value of x will be 20 minutes.
Therefore Byran can take 20 minutes while Andy can take 30 minutes.
You might be interested in
Answer:A
Step-by-step explanation: The first few square numbers are:
1
,
4
,
9
,
16
,
25
,
36
,
49
,
√
1
=
1
√
4
=
2
√
9
=
3
√
16
=
4
√
25
=
5
√
36
=
6
w
w
w
w
w
w
←
√
40
lies here
√
49
=
7
Therefore
√
40
is between
6
and
7
2g(x) +2x=4
2( g(x) +x) = 2(2)
g(x) + x= 2
g(x) = 2- x
To get y intercept,
put x=0
g(x) = 2- 0
g(x) = 2
So,y intercept = 2
1 pound = 16 ounces
8 * 16 = 128 ounces
1.Make y the subject
k = xy
k/x = xy/x
y = k/x
2.Substitute
y = k/x
y = 7/9
y = 0.777......
y = 0.8 (Answer)
To confirm
k = xy
k = 9 × 0.8
k = 7.2
k = 7 (constant)
Hope it helps☺
Answer:
correct answer is 3
Step-by-step explanation:
