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Tems11 [23]
3 years ago
12

The sum of eight times a number and fifteen is seven.Find the number. How do I work this out like these?

Mathematics
1 answer:
CaHeK987 [17]3 years ago
5 0
(8x n) + 15=7 : 7-15= (-8), (-8)divided by 8= (-1) : n=(-1) : When you have problems like this it helps to work them backwards. Hope you understand this.
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Mis Meyer's paid $3600 all together for the equipment, furniture and decorations for her restaurant. The equipment cost $500 mor
Tju [1.3M]

Answer:

The equipment will cost $1740.

Step-by-step explanation:

Let the Cost of equipment, furniture and decoration be x, y and z.

Now, According to question,

x + y + z = 3600 ...... (1)  (cost of all items)

x = 500 + y (∵ equipment cost 500 more than furniture)

and y = 2z ( ∵ furniture twice as much as decoration)

so, z = y/2

Now substituting the value of x and z in eq (1)

x + y + z = 3600

500 + y + y + \frac{y}{2} = 3600

2y + \frac{y}{2} = 3600 - 500

\frac{5y}{2} = 3100

y = \frac{3100\times 2}{5} = 1240

So, the cost of furniture (y) = 1240

∴ Cost of equipment = y + 500 = 1240 + 500 = 1740

Therefore the cost of equipment was $1740.

3 0
3 years ago
Barb solved the following equation: 4(3x – 12) = 5(2x + 6)
katrin2010 [14]

Answer:

4(3 * 39 – 12) = 5(2 * 39 + 6)

x = 39


Step-by-step explanation:

4(3x – 12) = 5(2x + 6)

(12x - 48) = (10x + 30)

12x - 10x = 30 + 48

2x = 78

2x/2 = x

78/2 = 39

x = 39

No Prob :)

5 0
3 years ago
Read 2 more answers
Chase purchased a sweatshirt from the clearance rack. The price of the sweatshirt after the discount is represented by the expre
Black_prince [1.1K]

Answer:B(0.75+0.25)x

Step-by-step explanation:

Is a discount of 0.75 was given the d real value of the sweatshirt would be a whole number

Which is 1-0.75=0.25

6 0
3 years ago
Tony sees an outfit that he
REY [17]

Answer:

He need 345 $

Step-by-step explanation:

Data :

Shirt = 50 $

Pant = 75 $

Shoes = 375 $

Now add them

50 + 75 + 375 = 500 $ value 1

He has 155 $  value 2

Subtrate value 2 from value 1

    500 - 155 = 345 $

7 0
2 years ago
A car’s original price was $26,500. Mr. Thomas paid $18,815. What percent discount did Mr. Thomas receive on the car?
Grace [21]
B. He received 29% discount on the car.<span />
6 0
3 years ago
Read 2 more answers
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