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4 years ago

I really need help on this question!!!

Mathematics

2 answers:

Artyom0805 [142]4 years ago

7 0

Answer:

The pencil was invented in 1795

Step-by-step explanation:

When the question says "177 years before ... 1972", it implies that we have to subtract 177 from 1972 to find when the pencil was invented.

1972 - 177 = 1795

I hope you find this helpful. :)

Marysya12 [62]4 years ago

6 0

Answer: 1795.

Step-by-step explanation:

The statement states that it was invented "177 years before".

It also states the year the video game was invented which is 1972.

1972-177=1795.

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A store down the street is selling a used video game for 25% off the retail price. The game regularly sells for $89.00. What is

Dafna1 [17]

89.00 times .75 (new cost of item is 75% of original) =

66.75

therefor you answer is

D) $66.75

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3 years ago

Walmart has DVDs on sale at 4 for $38. What is the cost for 6 DVDs? Use words and/or numbers to justify your answer.

pickupchik [31]

First find unit price
$38/4 = $9.50 per DVD
6 DVDs * total cost = answer
6 * 9.50 = 57
Solution: 6 DVDs cost $57

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3 years ago

What is the equation of the line that passes through the point (8,1) and has a slope<br> of?

NemiM [27]

Answer:

Step-by-step explanation:

hello :

Use the point-slope formula.

y - y_1 = m(x - x_1) when : x_1 = 8 and y_1 = 1

the equation is : y - 1 = m(x - 8)

5 0

3 years ago

Y=17-4y-2 solve for y

aivan3 [116]

Answer:

The Answer is: y = 3.

Step-by-step explanation:

y = 17 - 4y - 2

Add 4y to both sides

5y = 15

Divide both sides by 5:

y = 3

3 0

3 years ago

If a total of 780 joules of energy is lost by

ankoles [38]

If a total of 780 joules of energy is lost by 25.0 grams of this substance, the heat of fusion is 31.2 J/g

The energy lost, H = 780 Joules

Mass of the substance, m = 25.0 grams

The Energy lost is the product of mass and the heat of fusion

The heat of fusion, c, is calculated using the equation below:

H = mc

Substitute H = 780 Joules and m = 25.0 grams into the equation

H = mc

780 = 25c

Divide both sides by 25

$\frac{780}{25} = \frac{25c}{25} \\c = 31.2 Joules/g$

The heat of fusion of the substance is 31.2 J/g

Learn more here: brainly.com/question/24017386

6 0

3 years ago