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3 years ago

Which property justifies the following steps:

Mathematics

2 answers:

ad-work [718]3 years ago

6 0

Step 3:
14/7x-6/3=5
2x-2=5
2x=5+2
2x=7
x=7/2

Vlada [557]3 years ago

3 0

Commutative.

Hope this helps :)

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Write a function rule for “The output is 5 less than the input.” Let x be the input and let y be the output.

Arisa [49]

The output is 5 less than the input is equivalent to the
input is five more than the output or x + 5 = y

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3 years ago

Write an expression to represent the perimeter of:

kotykmax [81]

"Perimeter" is the distance all the way around the drawing. If the drawing has sides, then the perimeter is the SUM of the lengths of all the sides. It's exactly the distance an ant would have to walk along the line, to get all the way around to where he started from.

To get the perimeter of the triangle, you have to add up the lengths of the three sides.

(2a - 3) + (2a) + (3a + 1) =

2a - 3 + 2a + 3a + 1 .

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Add up all the just plain numbers: -3 + 1 = -2

Write them together, as a binomial: 7a - 2

THAT's your expression for the perimeter.

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3 years ago

Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2, and the profit

Maru [420]

Answer:

x = 735 − $\frac{3y}{2}$

Step-by-step explanation:

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3 years ago

I started walking at 4pm when I finished the hour hand of the clock turned 90 degrees what time did I finish

Ulleksa [173]

Answer:

7 P.M.

Step-by-step explanation:

Time at which the walk was begun = 4 p.m.

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Thus,

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3 years ago

After production, an electrical circuit is given a quality score of A, B. C, or D. Over a certain period of time, 77% of the cir

Tanzania [10]

Answer:

a) 0.0125

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Step-by-step explanation:

For this question use tree diagram method to solve the question or by simply listing down the probabilities as I have done in the attached picture. Firstly, we need to convert all percentages in to decimal and those decimals will represent probability of each event. For example if we consider probability of quality score A it can be found by diving 77 with 100:

77/100 = 0.77

Similarly all probabilities can be found by simply dividing percentages with 100.

Part (b) is a conditional probability question. Given that a circuit failed is the condition. So we need to use conditional probability method to solve it.

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4 years ago