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2 years ago

Which of the following uses the distributive property correctly?

Mathematics

1 answer:

Alekssandra [29.7K]2 years ago

5 0

Answer:

3(×+5)=3 . x+5

Step-by-step explanation:

3(x+5)=3x+15

3 . x+5=3x+15

3 (x+5)=3 . x+5

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1x1+9x1/10+8x1/100+1x1/1000

xxMikexx [17]

I believe the answer is 1981/1000 x I think

6 0

2 years ago

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How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?

kolbaska11 [484]

Answer:

120 liters of 60% alcohol solution is needed

Step-by-step explanation:

Let's assume

x liters of 60% alcohol solution is added

so, we get solution as

$=\frac{60}{100}\times x$

$=0.6x$

we are given

40 liters of a 20% alcohol solution is

$=40\times\frac{20}{100}$

$=8$

so, total alcohol solution is

$=8+0.6x$

now, we can find total solutions

total solutions is

$=x+40$

now, it is making 50% solution

so, we get

$\frac{8+0.6x}{x+40} =\frac{50}{100}$

now, we can solve for x

$\left(8+0.6x\right)\cdot \:100=\left(x+40\right)\cdot \:50$

$800+60x=50x+2000$

$10x=1200$

$x=120$

So,

120 liters of 60% alcohol solution is needed

4 0

2 years ago

5. Steve wants to buy a new stereo. The city that he lives

Rudiy27

Answer:

12.50

Step-by-step explanation:

3 0

2 years ago

16. A truck traveling 45 miles per hour and a train traveling 60 miles per hour cover the same distance. The truck travels 2 hou

Snowcat [4.5K]

Answer:

Step-by-step explanation:

d = rt

If t is the time taken by the train, then the truck takes t+2 hours.

For the truck:

d = 45(t + 2)

For the train:

d = 60t

Total distance travelled by both:

= 2d

= 60t + 45(t + 2)

= 60t + 45t + 90

= 105t + 90 where t is the time taken by the train.

7 0

2 years ago

Will give brainlest couldn't figure this out. There both the same question btw.

saveliy_v [14]

Answer:

d none of the above

Step-by-step explanation:

6 0

2 years ago

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