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2 years ago

5 pen cost 20. find the cost of 8 pens and then 15 pens

Mathematics

1 answer:

Anna007 [38]2 years ago

3 0

Answer:

8 pen : 26

15 pen : 60

Step-by-step explanation:

5 pen = 20

Times both sides by 2

10 pen = 40

add 5 pen = 20

15 pen = 60

Divide 10 by 5

2 pen = 4

1 pen = 2

Add them together

3 pen = 6

Add 5 pens and 20

8 pen = 26

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Lilit [14]

9514 1404 393

Answer:

x = 30
y = 105
z = 75

Step-by-step explanation:

You know the linear pair z° and 105° are supplementary angles, so ...

z = 180 -105 = 75

The other base angle of the isosceles triangle has the same measure, 75°. __

Then x can be found either from the sum of interior angles of the triangle, or from the relation of 105° to the "remote interior angles". The first relation gives ...

75° +75° +x° = 180° ⇒ x = 180 -150 = 30

The second relation gives ...

75° +x° = 105° ⇒ x = 105 -75 = 30

y° is supplementary to the left-side base angle, so is ...

y = 180 -75 = 105

Of course, you could also figure y from the symmetry of the figure.

The values of x, y, z are 30, 105, 75, respectively.

5 0

3 years ago

Jim decided to go for a drive in his car. He started out at 0 miles per hour(mph). He then accelerated 20 mph down his street. T

sleet_krkn [62]

Answer:

37 mph

Step-by-step explanation:

if he starts at 0 then goes to 20 then add another 35 which gives you 55mph then he slows down you decrease 11 which is 44 then decrease again 7 gives you 37mph

4 0

2 years ago

M! = 4125. What is m? n! = 281600. What is n?

Oksanka [162]

Step-by-step explanation:

m ~ 6.9

6.9! = 4122.7

4122.7 average 4125

n ~ 8.9

8.9! = 289867.7

289867.7 average 281600

4 0

2 years ago

Here is Laila’s graph from the previous screen.

lidiya [134]

Answer:

y=-1/3x+8

Step-by-step explanation:

There is no need for any specific answers, but here is one that could logically work out. Since the graph is going left/down, it has a negative slope, so -1/3 would be reasonable. The graph doesn't cross the origin and crosses above it, so this equation must have a positive 'b' value. In this case, I chose 8. y=-1/3+8 could represent Laila's graph.

4 0

2 years ago

∛(8+3√21) + ∛(8-3√21) solve without calculator

kykrilka [37]

Answer:

Step-by-step explanation:

I was thinking about it and I prepared my paper and pen and started typing the problem but then I realized this...

8+ and 8-

Then I was like

OK....

5 0

2 years ago

Read 2 more answers

5 pen cost 20. find the cost of 8 pens and then 15 pens​

5 pen cost 20. find the cost of 8 pens and then 15 pens