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const2013 [10]
3 years ago
12

Is 3b-9 a algebraic expression​

Mathematics
2 answers:
Slav-nsk [51]3 years ago
8 0

Answer:

yes

Step-by-step explanation:

KiRa [710]3 years ago
6 0

Answer:

yes

Step-by-step explanation:

the way it is because 3b-9 is a way to find the unknown variable.  

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A cruise ship is currently 20 kilometers away from its port and is traveling away from the port at 5 kilometers per hour . The f
Paladinen [302]

Answer:

The ship will be 37.5\ km far from its port 3.5 hours from now

Step-by-step explanation:

Hi

The function is y=5x +20 relates the number of kilometers y the ship will be from its port x hours from now, it has a form y=vt+y_{0} \ where \ y\ is\ final\ distance\\v\ is\ velocity\ in\ km/h,\ t\ is\ time\\and\ y_{0}\ is\ initial\ distance.

As the function is clearly defined, we only have to evaluate it for x=3.5, so y(3.5)=5(3.5)+20=17.5+20=37.5 \ km is the distance between the cruise ship and its port after 3.5 hours.

7 0
2 years ago
Determine which postulate or theorem can be used to prove that<br> REM= DME.
Snowcat [4.5K]

Answer:

SSS

Step-by-step explanation:

REM and DME share a side. This side is of course congruent.

In addition, sides RM and ED are marked as congruent, as are RE and MD.

All three corresponding sides of each triangle are congruent, which proves the triangles' congruency.

No information is given about the angles in these triangles, so none of the other theorem answer choices are valid.

Please mark brainliest! :)

5 0
3 years ago
Read 2 more answers
On the first visit to the veterinarians office chorus kitten weighed 550 g on the second visit the kitten had ganged 350 g on th
Roman55 [17]

Answer:

<em></em>\%Increase = 118\%<em></em>

<em></em>

Step-by-step explanation:

Given

Initial\ Weight = 550g

First\ Addition = 350g

Second\ Addition = 300g

Required

Determine the percentage increment

First, we have to calculate the new weight

New\ Weight = Initial\ Weight + First\ Addition + Second\ Addition

New\ Weight = 550g + 350g + 300g

New\ Weight = 1200

The percentage increment is then calculated as:

\%Increase = \frac{New\ Weight - Initial\ Weight}{Initial\ Weight} * 100\%

\%Increase = \frac{1200g - 550g}{550g} * 100\%

\%Increase = \frac{650g}{550g} * 100\%

\%Increase = \frac{650}{550} * 100\%

\%Increase = 1.182* 100\%

\%Increase = 118.2\%

<em></em>\%Increase = 118\%<em> -- Approximated</em>

<em></em>

<em>Hence, the percentage increment is approximately 118%</em>

6 0
3 years ago
Please help meeee! this is my last one lol thank you!!!​
Maksim231197 [3]

Answer:

The answer is C

Step-by-step explanation:

2x + 4y

2 x 3 = 6

4 x 6 = 24

24 + 6 = 30

6 0
3 years ago
Read 2 more answers
I actually put two questions here... please help!
Verdich [7]
1) You know the height of the bird from the observer is the same as the height of the plane to tower. We also know that the angle of depression is same as the angle of elevation.

So we will use the tangent function to find the value of x.

tan 23 = 5000 / x
x = 5000 / tan 23
x = 11779 

You're answer will be 11779 feet

2) We will use the sine function.

sin 35 = 17,000 / x
x = 17,000 / sin 35
x = 29638.6

So the answer would be approximately 29639
4 0
3 years ago
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