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Ahat [919]
3 years ago
8

Use properties of addition and subtraction to evaluate the expression. −28−47−12

Mathematics
1 answer:
Brrunno [24]3 years ago
6 0
The answer would be -87 
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Select ALL of the expressions that are equivalent to 3(8-4x)
Elina [12.6K]

Step-by-step explanation:

24-12x,and 2(12-6x)

hope it helps

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3 years ago
Solve for x: 3x − 2 > 5x + 10. (5 points)
velikii [3]

Answer:

Option 2.. x > -6

Step-by-step explanation:

3x -5x - 2 > 5x -5x + 10

-2x - 2 + 2 > 10 + 2

-2x/-2 > 12/-2

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2 years ago
Suppose that news spreads through a city of fixed size of 700000 people at a time rate proportional to the number of people who
Gnoma [55]

Answer:

y'(t) = k(700,000-y(t))  k>0 is the constant of proportionality

y(0) =0

Step-by-step explanation:

(a.) Formulate a differential equation and initial condition for y(t) = the number of people who have heard the news t days after it has happened.

If we suppose that news spreads through a city of fixed size of 700,000 people at a time rate proportional to the number of people who have not heard the news that means  

<em>dy/dt = k(700,000-y(t)) </em>where k is some constant of proportionality.

Since no one has heard the news at first, we have

<em>y(0) = 0 (initial condition) </em>

We can then state the initial value problem as

y'(t) = k(700,000-y(t))

y(0) =0

8 0
3 years ago
What are supersonic speeds
Darya [45]

Answer:

speeds above 343 m/s

Step-by-step explanation:

the faster you go the faster the supersonic

6 0
3 years ago
Read 2 more answers
SOLVE ILL GIVE BRAINLYIST
Paraphin [41]

Answer:

28.1%

Step-by-step explanation:

Population increased by (561000-438000)=123000

rate of increase

= (123000/438000)*100

=28.08

=28.1

5 0
3 years ago
Read 2 more answers
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