# At the market, 555 light bulbs cost \$9$9dollar sign, 9.How much do 777 light bulbs cost?

Question:

At the market, 5 light bulbs cost $9. How much do 7 light bulbs cost? Answer: Cost of 7 bulbs is$ 12.6

Solution:

Given that,

5 light bulbs cost $9 Find the cost of 1 bulb Cost of 1 bulb is found by dividing the cost of 5 bulbs by 5 Thus cost of 1 bulb is$ 1.8

Thus cost of 7 bulbs is $12.6 Answer 2 Answer: Answer: 7 bulbs equals 12.6 Step-by-step explanation: ## Related Questions 5. 6a+b = 4 5a + 2b = 1 ### Answers The value of the unknown variables a and b in given equations are 1 and -2 respectively. ### What is equation? An equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =. Given are two equations, 6a+b = 4......(i) 5a + 2b = 1.......(ii) Solving them by using substitution method, 6a+b = 4 b = 4-6a......(iii) Using equation (iii) in equation (ii) 5a + 2(4-6a) = 1 5a+8-12a = 1 -7a = -7 a = 1 Put a = 1 n eq(iii) b = 4-6·1 b = 4-6 b = -2 Hence, The value of the unknown variables a and b in given equations are 1 and -2 respectively. For more references on equations, click; brainly.com/question/29657983 #SPJ2 Answer: X = 1 Y = -2 Step-by-step explanation: Use simultaneous equations to work out. Still need help plz help ### Answers Answer: uplift slowest rate:) Answer: ## Uplift Step-by-step explanation: Uplift, because 0.1 per 1,000 is less than 2 per 1,000, which is less than 10 per 1,000. I'm always happy to help :) a map has a scale of 2 in : 25 mi. The map shows a highway is 31 inches long. how long is the actual highway? ### Answers 2 inches / 25 miles = 31 inches / x Cross-multiply the proportion: 2x inch-miles = 775 inch-miles Divide each side by 2 inches: x miles = 775/2 = 387.5 miles What is 78/100 in simplest form ### Answers 39/50 as a fraction in simplest form Hank is throwing a surprise party. The party costs$20 per person. Create a table of values and choose the graph that represent the relationship between the cost of the party and the number of friends attending. The table below represents the relationship between the cost of the party and the number of friends attending

Answer: 1st graph is the answer, empty boxes for number of friends are 5 and 15 and empty boxes for cost of party are 200 and 400

Step-by-step explanation: when you multiply 20 by the amount of people you get the cost of the party (proportional relationships)

__X__|__Y___

1    |    20

2   |   40

2   |     60

4   |     80

5   |     100

6   |   120

7   |    140

Can someone help me with this? :)