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Elina [12.6K]
3 years ago
9

Question 12

Mathematics
1 answer:
Anestetic [448]3 years ago
4 0
40 kilometers I think
You might be interested in
Solve for x<br> 2(−4x+3)+3x+3=−16
Flauer [41]

Answer:

x=5

Step-by-step explanation:

distribute first

2(-4x+3)

-8x+6

-8x+6+3x+3=-16

combine like terms

then get the variable alone

-5x+9=-16

-9. -9

<u>-5x</u><u>=</u><u>-25</u>

-5. -5

x=5

6 0
3 years ago
Two bicyclists are 7/8 of the way through a mile long tunnel when a train approaches the closer end at 40 mph. The riders take o
Anastaziya [24]

Answer:

the cyclists rode at 35 mph

Step-by-step explanation:

Assuming that the cyclists stopped, and accelerated instantaneously at the same speed than before but in opposite direction , then

distance= speed*time

since the cyclists and the train reaches the end of the tunnel at the same time and denoting L as the length of the tunnel :

time = distance covered by cyclists / speed of cyclists = distance covered by train / speed of the train

thus denoting v as the speed of the cyclists :

7/8*L / v = L / 40 mph

v = 7/8 * 40 mph = 35 mph

v= 35 mph

thus the cyclists rode at 35 mph

6 0
3 years ago
State of the triangles in each pair of similar. If so, State how you know they are similar and complete the similarity statement
Vinil7 [7]

Answer:

  b.  not similar

Step-by-step explanation:

The given sides* have the ratio 30:39 = 10:13 in one triangle and the ratio 20:27 = 10:13.5 in the other triangle. Since these ratios are different, the triangles cannot be similar.

____

* These are the sides bracketing the vertical angles at T. If the triangles were similar, the three sides would have to have the ratios 10 : 13 : 13.5.

However, the geometry shown would require that the angle opposite side 13.5 in one triangle have the same measure as the angle opposite side 13 in the other triangle. That is not possible, so it is not possible for these triangles to be similar.

6 0
3 years ago
Please help ill give you points
UkoKoshka [18]
Yes, it is a function
4 0
3 years ago
Read 2 more answers
Solve using any method. Choose the correct ordered pair.
lesya692 [45]

Answer:

C

Step-by-step explanation:

-2 + 7 = 5

7 0
3 years ago
Read 2 more answers
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