subject
Mathematics, 26.02.2020 03:11 seymani2

Frank tried to solve an equation step by step.
\qquad\begin{aligned} -5&=5(d+4) \\ -5&=5d+20&\green{\text{Step } 1} \\ 15&=5d&\blue{\text{Step } 2} \\ 3&=d&\purple{\text{Step } 3} \end{aligned}
−5
−5
15
3


=5(d+4)
=5d+20
=5d
=d


Step 1
Step 2
Step 3


Find Frank's mistake.
Choose 1
Choose 1

(Choice A)
A
\green{\text{Step }1}Step 1start color #28ae7b, start text, S, t, e, p, space, end text, 1, end color #28ae7b

(Choice B)
B
\blue{\text{Step }2}Step 2start color #6495ed, start text, S, t, e, p, space, end text, 2, end color #6495ed

(Choice C)
C
\purple{\text{Step }3}Step 3start color #9d38bd, start text, S, t, e, p, space, end text, 3, end color #9d38bd

(Choice D)
D
Frank did not make a mistake.

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 17:00
Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?
Answers: 1
question
Mathematics, 21.06.2019 18:10
Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial
Answers: 1
question
Mathematics, 21.06.2019 18:30
Which representation has a constant of variation of -2.5
Answers: 1
question
Mathematics, 21.06.2019 20:30
Which of the following best describes the figure?
Answers: 1
You know the right answer?
Frank tried to solve an equation step by step.
\qquad\begin{aligned} -5&=5(d+4) \\ -5&...
Questions
question
Mathematics, 31.05.2020 00:04
question
Mathematics, 31.05.2020 00:57
Questions on the website: 13722362