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Slav-nsk [51]
3 years ago
10

A store sells

Mathematics
1 answer:
user100 [1]3 years ago
7 0
C
Hope this helps!!!!!
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Jack and Jill live 345 miles apart from one another. They want to meet for lunch and agree to leave the
Novosadov [1.4K]

It will take them 3 hours to meet

Step-by-step explanation:

The given is:

  • Jack and Jill live 345 miles apart from one another
  • They want to meet for lunch and agree to leave the  same time, drive toward each other, and meet somewhere along the route
  • Jack's average rates 60 mph
  • Jill's average rate is 55 mph

We need to find how long it will take them to meet

Distance = Speed × Time

∵ They will drive toward each other at the same time and meet

   each other somewhere

- That means they will drive for the same time

∵ Jack's average rates 60 mph for t hours

∴ Jack will drive a distance = 60 × t = 60 t  miles

∵ Jill's average rate is 55 mph for t hours

∴ Jill will drive a distance = 55 × t = 55 t  miles

∵ The distance between Jack and Jill is 345 miles apart

- Add their distance above and equate the sum by 345

∴ 60 t + 55 t = 345

∴ 115 t = 345

- Divide both sides by 115

∴ t = 3 hours

It will take them 3 hours to meet

Learn more:

You can learn more about the word problems in brainly.com/question/3950386

#LearnwithBrainly

5 0
3 years ago
How much of a radioactive kind of bismuth will be left after 80 minutes if you start with 480
natita [175]

\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}

Actually Welcome to the concept of Radioactive decay.

So the left would be 30 grams.

8 0
3 years ago
Which system of linear equations appears to have a solution of (-1,4)?
daser333 [38]

Answer:

The 3rd graph represents the point (-1, 4) as the solution to the system of linear equations.

The correct graph is also attached below.

Step-by-step explanation:

We know when two lines meet at a certain point, the point where they meet is called the point of intersection.

We also know that the point of intersection of two lines is termed as the solution of the system of linear equations.

We are given the point (-1, 4) as the solution of the system of linear equations.

It means the two lines meet at x = -1, and y = 4.

In other words,

(x, y) = (-1, 4) is called the point of intersection of the system of linear equations.

Now, if we closely check the graph of these two lines, we can easily figure out that the 3rd from the right side is the graph that represents the solution to the system of linear equations.

The 3rd graph indicates that the two lines meet at x = -1, and y = 4.

Hence, the point of intersection of 3rd graph is:

(x, y) = (-1, 4)

Therefore, the 3rd graph represents the point (-1, 4) as the solution to the system of linear equations.

The correct graph is also attached below.

7 0
3 years ago
What is the rate of change between interval 4 and 7 ?
slamgirl [31]

Answer:

Rate of change = 75%

Step-by-step explanation:

Given:

First value (V1) = 4

Final value (V2) = 7

Find:

Rate of change.

Computation:

⇒ Rate of change = [(V2 - V1) / V1]100

⇒ Rate of change = [(7 - 4) / 4]100

⇒ Rate of change = [(3) / 4]100

⇒ Rate of change = [0.75]100

Rate of change = 75%

3 0
3 years ago
Read 2 more answers
If good pizza cheese cost $8.00 for 300g, write an equivalent rate for the cost of 100g.
alexira [117]

Answer:

$2.67

Step-by-step explanation:

8 / 3 = $2.67

7 0
3 years ago
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