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stira [4]
3 years ago
7

A student solved the equation below. Describe the error they made. (What did they do wrong? What should they have done?) *

Mathematics
1 answer:
Zepler [3.9K]3 years ago
8 0
Error: they divided both sides by three.
correct: they should’ve first subtracted both sides by two then divided both sides by three.
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Use the zero product property to find the solutions to the equation 2x2 + x-1 = 2
algol [13]

Answer:

see explanation

Step-by-step explanation:

Given

2x² + x - 1 = 2 ( subtract 2 from both sides )

2x² + x - 3 = 0

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term

product = 2 × - 3 = - 6 and sum = + 1

The factors are - 2 and + 3

Use these factors to split the x- term

2x² - 2x + 3x - 3 = 0 ( factor the first/second and third/fourth terms )

2x(x - 1) + 3(x - 1) = 0 ← factor out (x - 1) from each term

(x - 1)(2x + 3) = 0

Equate each factor to zero and solve for x

x - 1 = 0 ⇒ x = 1

2x + 3 = 0 ⇒ 2x = - 3 ⇒ x = - \frac{3}{2}

3 0
3 years ago
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a student found the volume of a rectangular pyramid with a base area of 92 square meters and a height of 54 Meters to be 4968 cu
Naya [18.7K]
It is not correct. 

The student found the volume by multiplying the base area with the height. He forgot to divide it by 3.

Formula to find the volume of the pyramid = 1/3 base area x height

volume = 1/3 x 92 x 54 = 1656 square meters 
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3 years ago
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3(5 - 2x) + 2(x-3) plz help me quick:(
trasher [3.6K]

Answer:

9-4x is simplified

Step-by-step explanation:

hope this helps

7 0
3 years ago
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A school has 510 male students and 850 female students. If a student from the school is selected at random, what is the probabil
Colt1911 [192]

Answer:

0.375

Step-by-step explanation:

510 male out of a total of 1360

510/1360 = 0.375

5 0
3 years ago
Quick help meeeeeeeeeeeeeee!!!!!1.Which equation has a graph that is parallel to the graph of 2x - 3y = 1?
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1.) A
2.) A
3.) D
Those r the answers
8 0
3 years ago
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