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Andru [333]
3 years ago
14

Find four consecutive integers such that 8 times the sum of the first and the third is 40

Mathematics
1 answer:
jolli1 [7]3 years ago
7 0
The consecutive integers are 9,10,11,12.
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Johnny and Mark's combined age is 26 years old. Johnny is two years older than twice Mark's age. Write a system of equations and
yaroslaw [1]

m * 2 + 2 = j

Answer:

Mark is 8

Johnny is 18

Step-by-step explanation:

m * 2 = j - 2

26 - 2 = 24

24 / 3 = 8

8 * 2 + 2 = 18

6 0
3 years ago
Prove that the sum of 3 consecutive numbers is always a multiple of 3
Bad White [126]

Proof:

3 consecutive integers are x, x+1 , x+2.

Add these values.

x+x+1+x+2

3x+3

3×(x+1)

3(x+1) is the multiple of 3 for any integer value of x.

7 0
4 years ago
Make up 2 situations on your own. One should show an increase and one should show a decrease. After you write the situation, dra
-BARSIC- [3]

Answer:90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

Step-by-step explanation:

6 0
3 years ago
The population density of the world is calculated by finding the ratio of the total number of people in the world to the area of
Romashka [77]

Answer:

51

Step-by-step explanation:

A = Surface area of the Earth = 1.5\times 10^8\ \text{km}^2

Total number of people on Earth = 7.594 billion as of 2018 = 7.594\times 10^9

We need to find the number of people living in each square km of land area.

So, we need to divide the number of people by the land area of the Earth.

1.5\times 10^8\ \text{km}^2=7.594\times 10^9\ \text{people}

\Rightarrow 1\ \text{km}^2=\dfrac{7.594\times 10^9}{1.5\times 10^8}

\Rightarrow 1\ \text{km}^2=50.63\approx 51\ \text{people}

So, 51 people will inhabit each square km of land area.

5 0
3 years ago
Over 11.2 hours, the temperature changed -2.9 degrees each hour. What was the total temperature change? Enter your answer in the
Doss [256]

Answer:

Total temperature change = -32.48 degrees

Step-by-step explanation:

Over 11.2 hours, the temperature changed -2.9 degrees each hour.

Total time elapsed = 11.2 hour.

Temperature change per hour = -2.9 degrees

Total temperature change = Total time elapsed x Temperature change per hour

Total temperature change = 11.2 x -2.9 = -32.48 degrees

So temperature is reduced by 32.48 degrees in 11.2 hours.

Total temperature change = -32.48 degrees

5 0
3 years ago
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