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

Answers

Answer 1
Answer:

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

cost\ of\ 1\ bulb = \frac{\text{cost of 5 bulbs}}{5}\n\ncost\ of\ 1\ bulb = (9)/(5)\n\ncost\ of\ 1\ bulb = 1.8

Thus cost of 1 bulb is $ 1.8

Find the cost of 7 bulbs:

cost\ of\ 7\ bulbs = 7 * \text{cost of 1 bulb }\n\ncost\ of\ 7\ bulbs = 7 * 1.8\n\ncost\ of\ 7\ bulbs = 12.6

Thus cost of 7 bulbs is $ 12.6

Answer 2
Answer:

Answer:

7 bulbs equals 12.6

Step-by-step explanation:


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What is the slope of the line that passes through the points (5,6) and (5,9)?

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

Answers

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? :)

Answers

C is the answer
Step by step explanation:
To get the answer you must expand the brackets (multiply the number or numbers outside the brackets with the ones within to remove them)
To do this you must first in 2(8+6) multiply 2 times 8 which is 16
Then you would multiply 2 times 6 which is 12
As the operation is a + that would mean the answer is 16+12
Hope this helps!
The answer is c! 16 + 12