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lana [24]
3 years ago
15

for the level 3 course examination hours cost twice as much as workshop hours and workshop hours cost twice as much as lecture h

ours. How much did the lectures cost per hour?
Mathematics
1 answer:
Eva8 [605]3 years ago
5 0
You have three unknowns: examination hours, workshop hours and lecture hours. Then, we assign variables.

Let:
x - examination hours
y - workshop hours
z - lecture hours

Then, we formulate equations based on the relationships given.
x = 2y --> eq 1
y = 2z --> eq 2

Substituting eq 2 to eq 1,
x = 2(2z)
x = 4z
z = x/4

Therefore, the lecture hours cost one-fourth of the cost of the examination hours.
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Int[][] myvals = {{2, 4, 6, 8}, {20, 40, 60, 80} };​using the above two-dimensional array, what is the value of myvals[1][2]?
RoseWind [281]

Answer:

myvals[1][2] = 4

Step-by-step explanation:

Int[][] myvals = {{2, 4, 6, 8}, {20, 40, 60, 80} }

This command means that we have the following matrix:

\left[\begin{array}{cccc}2&4&6&8\\20&40&60&80\end{array}\right]

using the above two-dimensional array, what is the value of myvals[1][2]?

This is the element at first row, column 2.

First row is {2, 4, 6, 8}

First row, column 2 is 4. So

myvals[1][2] = 4

4 0
3 years ago
The length of a rectangle is six times its width. If the perimeter of the rectangle is 98 yd , find its area.
kumpel [21]
P=2(W + L)
p= 2W + 2L
98=2W + 2(6W)
98=2W + 12W
98=W
98/14=14W/14
W=7

L= 6W
L = 6(7)
L= 42

CHECK
p=2(7 +42)
p=2(49)
p= 98

Area of a rectangle = W X L
Area of a rectangle = 7 X 42
Area of a rectangle = 294
4 0
3 years ago
Veronica bought 20 bags of candy for a school dance the first 5 bags cost $1.79 each the rest of the bags cost $1.19 each how mu
Stella [2.4K]
Answer: Veronica spent $26.8

Explanation:

5 x $1.79= $8.95

15 x $1.19= $17.85

$8.95 + $17.85= $26.8
5 0
3 years ago
1. A partially completed chart shows the hierarchy of a set of polygons.
lana [24]

Answer:

Follows are the solution to this question:

Step-by-step explanation:

Please find the attached file for the complete solution.

5 0
3 years ago
I’m soooo sorry but can y’all plzzz help me just a couple more times!
slava [35]

Answer:

26/35

Step-by-step explanation:

Each fraction is increasing by 1/35. Therefore, 25/35 + 1/35 = 26/35.

6 0
3 years ago
Read 2 more answers
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