Answer:
Não falo espanhoooooooooooooooool
If you would like to know how long would it take John to mow the lawn alone, you can calculate this using the following steps:
hours (Jessica) ... a
hours (John) ... b = ?
a + b = 11
b = 4 * a
___________
a + b = 11
a + 4 * a = 11
5 * a = 11 /5
a = 11/5 = 2 1/5 = 2.2 hours
b = 4 * a = 4 * 2.2 = 8.8 hours
The correct result would be 8.8 hours.
<h3>
Answer: 20</h3>
Explanation:
10 hours was spent playing football, out of 50 total
10/50 = 1/5 = 0.20 = 20%
Answer:
This can be done using the choose function.
The number of combinations are given by:
(
n
k
)
=
n
!
k
!
(
n
−
k
)
!
where
n
is the total number of students and
k
is the number of students to be picked. So we have
n
=
20
and
k
=
5
:
(
20
5
)
=
20
!
5
!
(
20
−
5
)
!
=
20
!
5
!
15
!
Evaluate directly with a calculator:
20
!
5
!
15
!
=
15504
we can simplify this before calculation by hand:
20
!
5
!
15
!
=
20
×
19
×
...
×
2
×
1
5
×
4
×
3
×
2
×
1
×
(
15
×
...
×
1
)
=
(
20
×
...
×
16
)
(
15
×
...
×
1
)
(
5
×
...
×
1
)
(
15
×
...
×
1
)
=
(
20
×
...
×
16
)
15
×
...
×
1
(
5
×
...
×
1
)
15
×
...
×
1
=
(
20
×
19
×
18
×
17
×
16
)
(
5
×
4
×
3
×
2
×
1
)
Simplify the numbers matched up by color:
=
(
4
×
19
×
9
×
17
×
4
)
(
1
×
1
×
3
×
1
×
1
)
=
(
4
×
19
×
3
×
17
×
4
)
(
1
×
1
×
1
×
1
×
1
)
=
3
×
4
×
4
×
17
×
19
=
48
×
323
=
15504
The transformed point if reflected over y = x is (4, 10)
<h3>Reflection of coordinate</h3>
Reflections are transformation technique used to change the position of an image on an xy-plane.
Given the coordinate (10, 4), if this coordinate points are reflected over y =x, this shows that we will simply swap the coordinate points to have (4, 10)
Hence the transformed point if reflected over y = x is (4, 10)
Learn more on reflection here: brainly.com/question/1908648
#SPJ1