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ludmilkaskok [199]
3 years ago
5

Are these equations equivalent? 0.8x + 3= 1.8x and 2x =6

Mathematics
1 answer:
leonid [27]3 years ago
6 0

Answer:

Yes

Step-by-step explanation:

0.8x + 3 = 1.8x

3 = 1.8x - 0.8x

x = 3

And:

2x = 6

dividing both sides by 2:

x = 3.

hence the two equations are equivalent since they give the same answer.

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PLS HELP ME, I REALLY NEED THIS RIGHT NOW, 50 POINTS, IF YOU ANSWER WITH NO EXPLANATION, OR ANSWER FOR THE POINTS YOU WILL BE RE
saw5 [17]

Answer: This is very little points for this but here we go...

A marine biologist is studying the growth of a particular species of fish

: When the marine biologist concluded her study,  the length of the fish was approximately 9.19 cm

To Find : reasonable domain to plot the growth function

What does the y-intercept of the graph of the function f(m) represent?

average rate of change of the function f(m) from m = 1 to m = 9,

Solution:

m = 0

=> f(0) = 5(1.07)⁰  = 5  cm

the length of the fish was approximately 9.19 cm.

=>  

=>  

=> m = 9

Domain = [0 , 9 ]

reasonable domain to plot the growth function = [0 , 9 ]

y-intercept of the graph of the function f(m) represent represent initial length of fish = 5 cm

average rate of change of the function f(m) from m = 1 to m = 9

m = 1  => f(1) = 5(1.07) = 5.35  cm

m = 9 => f(9) = 5(1.07)⁹ = 9.19 cm

Change in 9 - 1 = 8 months = 9.19 - 5.35  =  3.84 cm

average rate of change of the function f(m) from m = 1 to m = 9,  

= (3.84/8)

=  0.48  cm per month

Step-by-step explanation:

5 0
3 years ago
An art supply store sells posters for $9 each and pictire frames for $15 each
77julia77 [94]
Since posters cost 9 dollars each and picture frames cost 15, it would be multiplication.

The expression would be 9(6)+15(6) or 9x6+15x6.

You have to multiply these numbers. 9 times 6 would be 54. 15 times 6 would be 90.

Now, we need to add these together. 54 plus 90 would be 144.

The total cost for 6 framed posters would be $144.
5 0
4 years ago
The point (5, -2) is rotated 90° about the origin. Its image is
Nadya [2.5K]

Answer:

(2,5)

Step-by-step explanation:

The rule to 90 degrees about the origin is (x,y) to (-y,x). You basically switch the values of y and x but remember the value of y is negative. The value of y is -2 so -2 is now 2 since the rule changed the sign (-2×-y=2) and 5 isnt affected except it is the x value. Just know that since they r switched, x is now 2 and y is 5 when rotated 90 degrees about the origin.

8 0
3 years ago
Write the product 3i(5 - 3i) in the form a + bi.
stiks02 [169]

Answer:

9+15i

Step-by-step explanation:

3 0
3 years ago
Solve the system of equations below by graphing them please
nikklg [1K]
Answer: (2, 1)

_____
It is, of course, much easier to let a graphing utility do the work.

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4 years ago
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