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ss7ja [257]
3 years ago
8

Adding & Subtractiny Add. 1. 3+(-7)

Mathematics
1 answer:
erik [133]3 years ago
3 0

Answer:

\Huge \boxed{-4}

Step-by-step explanation:

To solve this problem, first you have to use adding & subtracting integers from left to right.

First, add & subtract numbers from left to right.

3+(-7)=-4

Therefore, the correct answer is -4.

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Suppose you are studying a population with the following characteristics: Birth rate = 14 per 1,000/year Death rate = 6 per 1,00
Nutka1998 [239]

Answer:

 12 per 1,000 / year would be population growth

Step-by-step explanation:

To know the population growth it is important to know what it contributes to its growth and that it decreases it.

Birth rate ==> increases growth

Death rate ==> decreases growth

Immigration rate ==> increases growth

Emigration rate ==> decreases growth

Now it only remains to add those that increase growth and subtract those that decrease, like this:

 14 per 1,000 / year - 6 per 1,000 / year + 5 per 1,000 / year - 1 per 1,000 / year = 12 per 1,000 / year

 12 per 1,000 / year would be population growth

3 0
3 years ago
Two physics students are doing a side competition during a game of bowling, seeing who can toss a ball with the larger momentum.
dem82 [27]

Answer:

she should beat a speed of  v₂ = 6.04 m/s in order to win the competition

Step-by-step explanation:

Since the momentum p is defined as

p = m*v

where

m= mass of the ball

v= velocity of the ball

denoting 1 and 2 as the first and second bowler , then to reach the momentum of the first bowler

p₂=p₁

therefore

m₁*v₁ = m₂*v₂

v₂ = v₁ * (m₁/m₂)

replacing values

v₂ = v₁ * (m₁/m₂) =8.6 m/s * (4.5 kg/6.4 kg ball) = 6.04 m/s

then since the momentum p = m*v increases with increasing v (at constant m)  , she should beat a speed of  v₂ = 6.04 m/s in order to win the competition

6 0
4 years ago
Which sequence is geometric and which is arithmetic?
tekilochka [14]

The table on the left is <u>arithmetic</u>

This is because each term is increasing by the same amount (2) each time.

  • 3+2 = 5
  • 5+2 = 7
  • 7+2 = 9
  • 9+2 = 11

--------------------------------------------

The table on the right is <u>geometric</u>

Why? Because this time we are multiplying each term by the same value (2) to get the next term.

  • 3*2 = 6
  • 6*2 = 12
  • 12*2 = 24
  • 24*2 = 48

Both involve the number 2, but the first table uses addition while the second table uses multiplication.

6 0
3 years ago
Read 2 more answers
Julie is roller skating. She can skate 16 mile in 2 minute. What is Julie's rate in miles per minute?
mafiozo [28]
8 miles per minute?
6 0
3 years ago
Read 2 more answers
Find the area of a circle with a circumference of 2 pie
shusha [124]
We know that formula for circumference is 2πr

Since we have circumference of 2π, that would means 2π = 2πr.

We need to solve for r. We can divide both sides by 2π:

2π / 2π = 2πr / 2π

1 = r

So radius is 1.

Now the formula for area of circle is πr². So plug in r=1 and that would be 

π(1)²

π

So area of circle is π.

Hope this helps.

6 0
4 years ago
Read 2 more answers
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