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rosijanka [135]
3 years ago
15

3 more than 5 times the number of dogs in algebraic expression

Mathematics
1 answer:
Zinaida [17]3 years ago
5 0
3+5x or 5x+3, because when it is 3 more, it is saying add 3, and when it is saying 5 times, it is saying multiply by 5, so your expression would be 5x+3
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Which is an equation of the line through (-8,-4) and (4, 5)?
DochEvi [55]

Answer:

the right answer is A :)

7 0
3 years ago
the height of a kicked soccer ball is represented by the function f(x)=8x-2x^2 where x is the number of seconds since the ball w
____ [38]

Answer:

Result at time x = 4 seconds the soccer ball hit the ground.

Step-by-step explanation:

At the moment just before the ball is kicked, it is on the ground and so the height f(x) is zero meters. After the kick, the ball goes through the air and it's path can be described by a (mountain) parabola.

So lets see after how many second (x) the height = 0 once again.

f(x) = 8x-2x^2

f(x) = 0

8x - 2x^2 = 0

Try to write the formula in two terms

-2x * (x - 4) = 0

When a product of two or more terms equals zero, then at least one of the terms must be zero.

Now solve each term = 0 separately, meaning, solve as many equations as there are terms in the product.

Any solution of term = 0 solves product = 0.

Solve the first term:

-2x = 0

Multiply left an right from the = singn with the factor -1 gives this outcome:

2x = 0

x = 0

Solve the second term:

x-4 = 0

x = 4

Result at time x = 4 seconds the soccer ball hit the ground.

x = 4

x = 0

5 0
3 years ago
Does anyone know how to do this type of shape/figure
lara [203]

Answer: I think it is b

Step-by-step explanation:

6 0
3 years ago
How do u find the slope between the points (-5,2) and (3,9)
Whitepunk [10]
You need to rise divided by the run. Another way to put it is
m = (y2 - y1)/(x2 - x1)
Take your points and plug them in
m = (2 - 9)/(-5 - 3) = (-7)/(-8) = 7/8 is the slope
7 0
3 years ago
The distance between two places is 120 km. A car travelling at a certain speed can cover the distance in 2 hours 30 minutes. By
Ludmilka [50]

Answer:

Distance between two places=120 km

Step-by-step explanation:

 

Time= 2 hrs 30 min

       =(2*60)min+30min

       =120min+30min

       =150min=150/60 hr

        = 5/2 hr

Speed = distance /time

          = (120/5/2)km/hr

          =(120×2/5)km/hr

          =(240/5)km/hr

          = 48 km/hr

New time = 2 hr 30min-30min

               = 2hr

Distance =120km

Speed  = Distance /time

           =120/2 km/hr

           = 60 km/hr

Increase in speed=(60-48)km/hr  

                            =12km/hr

Another way to show :

Distance = 120km

speed=Distance/time

=120/2.5=48 km/hr

New speed=120/2=60 Km/hr

change inspeed=60-48=12km/hr

8 0
3 years ago
Read 2 more answers
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