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trapecia [35]
3 years ago
5

7

Mathematics
1 answer:
KIM [24]3 years ago
4 0

Hey, can you please fix this question? I can't seem to understand it. When you do, please tell me so I can help you out!

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3x+3(x+y) what is equivalent
NNADVOKAT [17]

Answer:

6x+3y

Step-by-step explanation:

6 0
3 years ago
Andrew and Sarah are tracking the number of steps they walk. Andrew records that he can walk 6000 steps in 50 minutes. Sarah wri
Leni [432]

Answer:

Andrew walks more steps than Sarah.

Step-by-step explanation:

The question is incomplete. The complete question is :

Andrew and Sarah are tracking the number of steps they walk. Andrew records that he can walk 6000 steps in 50 minutes. Sarah writes the equation y=118x, where y is the number of steps and x is the number of minutes she walks, to describe her step rate. This week, Andrew and Sarah each walk for a total of 5 hours. Who walks more steps?

Solution:

Given:

Andrew walks 6000 steps in 50 minutes.

Number of steps Sarah walks is given by the equation :

y=118x

where y is the number of steps and x is the number of minutes she walks.

Finding the number of steps each walks in 5 hours.

Total number of minutes in 5 hours = 5\times 60 = 300\ min

For Andrew:

Using unitary method:

If in 50 minutes Andrew walks = 6000 steps.

In 1 minute he will walk = \frac{6000}{50} = 120 steps

In 300 minutes he will walk = 120\times 300 = 36000 steps

Thus, Andrew will walk 36,000 steps in 5 hours.

For Sarah:

We will plugin x=300 in the equation and solve for y.

We have:

y=118(300)

∴ y=35400

Thus, Sarah will walk 35,400 steps in 5 hours.

Therefore, Andrew walks more steps than Sarah as 36,000>35,400.

5 0
3 years ago
Simplify the given expression below: (4+2i)-(1–7i)
emmasim [6.3K]

Answer:

3 + 9i

Step-by-step explanation:

(4 + 2i) - (1 - 7i)

distribute the (-)

(4 + 2i) - 1 + 7i

combine like terms

3 + 9i

4 0
3 years ago
Which expression is equivalent to 9p-3p +2
Dafna1 [17]
You have the right answer 6p+2
5 0
3 years ago
What is the median of 6, 7, 3, 15, 4, 4.
NeTakaya

Answer:

5

Step-by-step explanation:

The median is the middle when the numbers are lined up from smallest to largest

3,4,4,6,7,15

There are 6 number so the middle is the  between the 3rd and 4th number

3,4,4,    6,7,15

Take the 3rd and 4th numbers and average

(4+6)/2 = 10/2 = 5

5 0
2 years ago
Read 2 more answers
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