Is 12x=7y-10y a linear equation?

Mathematics

1 answer:

Kruka [31]1 year ago

4 0

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Ella completed the following work to test the equivalence of two expressions.

MrRa [10]

Answer:

The expressions are not equivalent because Ella did not know that you can’t use substitution to test for equivalence.

Step-by-step explanation:

Equivalent algebraic expressions are those expressions which on simplification give the same resulting expression.

Two algebraic expressions are said to be equivalent if their values obtained by substituting any values of the variables are same.

Two expressions 3f+2.6 and 2f+2.6 are not equivalent, because when f=1,

3f + 2.6 = 3.1 + 2.6 = 3 + 2.6 = 5.6

2f + 2.6 = 2.1 + 2.6 = 2 + 2.6 = 4.6

5.6 = 4.6

Method of substitution can only help her to decide the expresssions are not equivalent, but if she wants to prove the expressions are equivalent, she must prove it for all values of f.

3f + 2.6 = 2f + 2.6

3f = 2f

3f - 2f = 0

f = 0

This is true only when f=0.

Hence,

The expressions are not equivalent because Ella did not know that you can’t use substitution to test for equivalence.

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1 year ago

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Meg used this table to track the average attendance from month to month at her theater for five months. A 5-column table with 1

White raven [17]

Answer:

B - Her monthly average would have increased by $19.57. ... Katie works as a waitress and records her monthly tips in the table shown below. If Katie decided not to work the month of November, how would her five month average compare to her six month ... Lisa is currently taking physics as one of her electives in school.

Step-by-step explanation:

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1 year ago

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michael bought a new ipad for $450. Alexander bought the same ipad at a 12% discount. how much did alexander pay

lara [203]

396$ because it’s right

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A 1500 kg hippo is completely submerged, standing on the bottom of a lake. What is the approximate value of the upward normal fo

juin [17]

Answer:

About 428 N

Step-by-step explanation:

Weight = 1,500 * 9.8 = 14,700 N

Density = Mass ÷ Volume

1,030 = 1,500 ÷ V

V = 1,500 ÷ 1,030 = 1.46 m^3.

Buoyant force = Density * g * V

Buoyant force = 1,000 * 9.8 * (1,500 ÷ 1,030)

Buoyant force = 9,800 * (1,500 ÷ 1,030) = 14,272 N.

Net force = 14,700 – [(9,800 * (1,500 ÷ 1,030)]

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1 year ago

Christian's car used 15 gallons to travel 270 miles. How far can he travel on 11 gallons?

kumpel [21]

Answer:

198

Step-by-step explanation:

270/15 gives us 18, his miles per gallon. multiply that by 11, and you get 198.

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1 year ago