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DiKsa [7]
3 years ago
12

-4x + 7y = 18

Mathematics
1 answer:
sasho [114]3 years ago
5 0

Answer:

​​

Step-by-step explanation:

Subtract 7y7y from both sides.

-4x=18-7y−4x=18−7y

2 Divide both sides by -4−4.

x=-\frac{18-7y}{4}x=−

​4

​

​18−7y

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The average of 3,15, and my number is 40. What is my number?
mylen [45]

Answer:

Your number is 102.

120/3=40 (3 numbers so divide by 3)

3+15=18

120-18=102

8 0
3 years ago
Krystal went To the carry out to purchase some items. She purchased four bottles of pop, three candy bars, and two bags of chips
Sunny_sXe [5.5K]

Answer:

Equation to determine crystals total bill (T) =(7.7+2x) - 1.50

Step-by-step explanation:

Given:

Number of bottles of pop purchased = 4

Number of candy bars purchased =  3

Number of chips bag  purchased = 2

Cost of per bottle of pop = $1.25

Cost of per candy bar = $.90

Cost of the coupon  = $1.50

To Find :

Equation to determine crystals total bill (T) given the cost of one bag of chips = ?

Solution:

Let the cost of one chips bag be x

Cost of  4 bottles of pop

=>4 \times 1.25

=>$ 5

Cost of 3 candy bars

=>3 \times 0.90

=>$ 2.7

Cost of 2 bags of chips

=>2 \times x

=>$ 2x

Now the total cost of the bill is

T = 5 + 2.7+ 2x

T =7.7+2x

Also Krystal had a coupon worth $1.50, the cost of the ticket will be

T =(7.7+2x) - 1.50

7 0
3 years ago
The width of a rectangle is 4 inches, and the length is 9 inches, what is the length of a side to a square that has the same are
emmainna [20.7K]

Answer:

36

Step-by-step explanation:

9x4=36

8 0
2 years ago
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lesantik [10]

Answer:no he misses the rate he needs to run by 30m seconds

Step-by-step explanation:

45/5=9

7 0
2 years ago
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