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Crank
3 years ago
6

Which expressions are equivalent to the expression 4a – 6b + 3c?

Mathematics
1 answer:
dybincka [34]3 years ago
3 0

Answer:

Third one: 2(2a-3b+c)+c

Step-by-step explanation:

Hope this helped:)

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Jared is 10 years old, and Peter is 15 years old. Together, they run 150 yards. How far does each brother run. if a brother is t
Andreas93 [3]
Jared can run 75 yards and Peter can run 125 yards
8 0
3 years ago
a car travels at 54 km/h for first 20seconds , 36km/h for next 30seconds and finally 18km/h for next 10 seconds find the averade
Sladkaya [172]

Answer:

39 km/h

Step-by-step explanation:

Velocity is the rate of change of distance in a given direction with time. Mathematically,

Velocity = Displacement/time

Like speed, velocity is measured in Km/h or m/s.

Given that the car travels at 54 km/h for first 20seconds,

since 60 seconds = 1 minute and

60 minutes  = 1 h,

20 seconds

= 20/(60 ×60) h

= 1/180 h

In the same vein,

30 seconds

= 30 / (60 ×60) h

= 1/120 h

10 seconds

= 10/(60 ×60) h

= 1/360 h

Hence  if the car travels 54 km/h for 10 seconds, the distance covered

= 54 × 1/180

= 3/10 Km

If the car travels 36km/h for next 30seconds, the distance covered

= 36 × 1/120

= 3/10 Km

If the car travels 18km/h for next 10 seconds, the distance covered

= 18 × 1/360

= 1/20 km

Total distance = 3/10 Km + 3/10 Km + 1/20 Km

= 13/20 Km

Total time spent = 20 + 30 + 10

= 60 seconds

= 1/60 h

Average velocity = 13/20 km/ 1/60 h

= 39 Km/h

7 0
4 years ago
Simplify (x^3/8)^3/4
Viktor [21]

When an exponent is raised to another exponent, you can multiply the powers to simplify them.

3/8*3/4

<em>*Multiply numerators*</em>

3*3=9

<em>*Multiply denominators*</em>

8*4=32

x^9/32

Hope this helps!!

4 0
3 years ago
Read 2 more answers
(06.03 MC) How is the expression (3 + y) ⋅ 7 described by its factors and terms?
baherus [9]
It has 3 factors and 2 terms

7 0
4 years ago
What two ratios are equivalent to 10:18
Whitepunk [10]
10 : 18          2 into 10 is 5, 2 into 18 is 9.

5 : 9.

You can also choose to multiply 10 : 18 by 2.

2*10 : 2*18

20 : 36.

Therefore   5 : 9 and 20 : 36  are two ratios that are equivalent to 10 : 18.
6 0
4 years ago
Read 2 more answers
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