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erica [24]
2 years ago
7

Find the perimeter a = x +3 b = 2x - 1

Mathematics
1 answer:
Arturiano [62]2 years ago
6 0

Answer:

Step-by-step explanation:Rectangles have 4 sides--2 = lengths and 2 = widths, so perimeter = 2l + 2 w = 2(l + w).

l + w = (2x - 1) + (x + 3) = 3x + 2.  Then double with distributive property P = 2(3x + 2)

P = 6x + 4

You could also do distributive property twice:  2(2x - 1) + 2(x + 3) = 4x - 2 + 2x + 6 = 6x + 4.

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Sam is observing the velocity of a car at different times. After three hours, the velocity of the car is 53 km/h. After six hour
almond37 [142]
To answer the question above, determine the velocity of the car at time zero. To do such, determine the increase in velocity every hour (acceleration). 

                                     a = (62 - 53) / (6 -3) = 3 km/ h^2

Calculate for the initial velocity (v) by using either of the velocities paired with the corresponding time,
        
                                     v = 53 km/h - (3 km/h^2) x 3 h = 44 km/h

The equation is <em>y = 44 + 3x</em>. Where x is the time in hours, y is the velocity in km/h. 


6 0
3 years ago
Read 2 more answers
1. Which of the following steps are necessary to solve a quadratic equation of the form az? + bz+c=0 by factoring? Select all th
Radda [10]

Answer:

A.)

C.)

D.)

Step-by-step explanation:

Hope this helps:)

6 0
3 years ago
1/2 (4-k)=2/5 <br>Distribute and find LCM
borishaifa [10]

Answer:

  • 20 -5k = 4
  • the LCM of the denominators is 10

Step-by-step explanation:

I find it convenient to do the problem in the reverse order: find the LCM, then distribute. That way, I'm not distributing a fraction.

The LCM of 2 and 5 is their product: 2·5 = 10. Multiplying the equation by 10 gives ...

  5(4 -k) = 4

Now, distributing, we get ...

  20 -5k = 4

3 0
4 years ago
Identify the missing term in the following geometric sequence:
aleksley [76]

Answer:

B. -1/8

Step-by-step explanation:

Using the terms given in the sequence:

4, -2, 1, -1/2, 1/4

we can find the pattern by dividing since it is a geometric seqence:

-2/4 = -1/2

1/-2 = -1/2

-1/2 ÷ 1 = -1/2

So, each term is multiplied by -1/2 to get the next term in the sequence:

\frac{1}{4}*-\frac{1}{2}=-\frac{1}{8}

3 0
4 years ago
João comprou uma TV por R$ 2 400,00; um celular por R$ 1 325,00 e um tênis por R$ 130,00, qual o valor total da compra?
charle [14.2K]

Answer:

R $ 3855

Step-by-step explanation:

João comprou uma TV por R $ 2400,00; um celular por R $ 1350,00 e um tênis por R $ 130,00 qual o valor total da compra?

O preço total de compra é calculado como:

Custo da TV + Custo do Celular + Custo do Tênis

R $ 2400,00 + R $ 1350,00 + R $ 130,00,

= R $ 3855

3 0
3 years ago
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