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natta225 [31]
3 years ago
7

Write the number of the word problem that match the system of equations illustrated:

Mathematics
1 answer:
uranmaximum [27]3 years ago
4 0

5b + 9s = 28.75

10b + 10s = 47.5

Multiply all terms in equation #1 by 2.

10b + 18s = 57.5

Subtract both equations from each-other.

8s = 10

Divide both sides by 8.

s = 1.25

The cost of a soda is 1.25, and because we know this, we can plug it into either equation to solve for the cost of b, a burger.

5b + 9(1.25) = 28.75

5b + 11.25 = 28.75

Subtract 11.25 from both sides.

5b = 17.5

Divide both sides by 5.

b = 3.5

<h3>The price of a soda is $1.25.</h3><h3>The price of a burger is $3.5.</h3>
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Answer:

B. 200

Step-by-step explanation:

A perfect square is the multiplication of two equal integers such as 1*1=1, 2*2=4, 3*3=9. From the examples, 1, 4, 9 are perfect square.

Non perfect square numbers are 1*2=2,

3*1=3,

5*1=5,

3*2=6,

6*1=6,

7*1=7

Examples of perfect squares:

1*1=1

2*2=4,

3*3=9,

4*4= 16,

5*5=25,

6*6=36,

7*7=49,

8*8=64,

9*9=81,

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11*11=121,

12*12=144,

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3 years ago
Please help me... What is the value of X?<br> .
rusak2 [61]
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3 years ago
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olya-2409 [2.1K]

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6 0
3 years ago
What is the value of x?<br><br><br><br> Enter your answer in the box.<br><br><br> _____ units
krek1111 [17]

Answer:

x=28

Step-by-step explanation:

We can use similar triangles and proportions to solve this problem.  Put the side of the small triangle over the same side of the larger triangle.

x               42

---------- = ----------

x+10           42+15

Simplify

x               42

---------- = ----------

x+10           57

Using cross products

57x = 42 (x+10)

Distribute

57x = 42x+420

Subtract 42x from each side

57x-42x = 42x-42x +420

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Divide each side by 15

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6 0
3 years ago
Read 2 more answers
Which of the following expressions represents the expanded version of the expression
maxonik [38]

Answer:

4th option

Step-by-step explanation:

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4 0
3 years ago
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