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irga5000 [103]
2 years ago
11

Monica built a porch that contained 2 different colors of bricks to create a neat pattern. She purchased the red bricks at $2 ea

ch and the gray bricks for $3 each. Write and solve a system of equations that could be used to
Mathematics
1 answer:
Liono4ka [1.6K]2 years ago
4 0

Answer:

2x+3x=5x

Step-by-step explanation:

The reason for this answer is algebra. Since you give a full explanantion  on it I'm not sure if I answered it correctly. But here is what I think from what you gave of the question.  

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The sum of consecutive integers 1,2,3,...,n is given by the formula 1/2n(n+1). How many consecutive integers, starting with 1, m
LuckyWell [14K]

1/2 * n * (n+1) = 1081

distribute

1/2 n^2 +1/2n -1081=0

factor out 1/2

1/2 (n^2 +n -2162) =0

multiply each side by 2

(n^2 +n -2162) =0

factor

(n-46) (n+47) =0

n=46, n=-47

n cannot be negative

n=46

Answer 46


7 0
3 years ago
B is the midpoint of AC Find AB, BC and AC.
kramer

Step-by-step explanation:

Since B is the midpoint of AC. So,

AB = BC

12x - 12 = 4x + 28

12x - 4x = 28 + 12

8x = 40

x = 40/8

x = 5

Now,

AB = BC = 4(5) + 28

= 20 + 28

= 48 cm

Now

AC = AB + BC

AC = 48 + 48

AC = 96 cm

8 0
2 years ago
Annika pays 2/25 of her weekly income into a retirement fund. If she pays £42 into the retirement fund, what is her weekly incom
skad [1K]

Answer:

Below.

Step-by-step explanation:

Let x be the Annika's weekly income.

2/25 of x  =  42

2x/25  =  42

x  =  42(25/2)

x  =  525

Her weekly income is $525.

6 0
2 years ago
Solve each equation check your solution<br> 49=-7(t+1)
enyata [817]
49 = -7 (t + 1)
49 = -7t + 7
-7 -7
42 = -7t
÷ -7 ÷ -7
-6 = t

t = -7
5 0
3 years ago
Read 2 more answers
6 divided by 3,724? I really need to know this............
ziro4ka [17]

Answer: 620 r4 (620.6, the decimal 6 has a line over it because it is repeating)

<u>Step-by-step explanation:</u>

Using long division:

    <u>    6 2 0 </u>r.4

6  ) 3 7 2 4

  <u> - 36</u>  ↓

        1  2

    <u>  -  12 </u>  ↓

           0   4

         - <u>     0 </u>

                4

8 0
2 years ago
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