1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
enyata [817]
3 years ago
11

A student solved z + (-0.72) = -2.5 for z using the following steps.

Mathematics
2 answers:
prisoha [69]3 years ago
6 0

The student's error was in first step where he added -0.72 instead of 0.72

Step-by-step explanation:

Given equation;

z + (-0.72) = -2.5

When solving for z, eliminate the other numbers from one side.

Step 1: z + (−0.72) + (−0.72) = −2.5 + (−0.72)

In this step, the student should have added 0.72 because -0.72 was already present in the equation and to eliminate it, he should have add same number with opposite sign.

According to this Step, -0.72 and -0.72 would have been added, because according to mathematics, two numbers with minus sign are added and the sign remains same.

The student's error was in first step where he added -0.72 instead of 0.72

Keywords: addition, subtraction

Learn more about addition at:

  • brainly.com/question/10978510
  • brainly.com/question/11007026

#LearnwithBrainly

Elza [17]3 years ago
4 0

Answer:

To solve, you must use the inverse operation. In step 1, -0.72 should have been subtracted from both sides, not added. Otherwise, 0.72 should have been added to both sides, not -0.72.

Step-by-step explanation:

I got it wrong for y'all LOL

You might be interested in
What is the center and radius of the equation (x-8)^2 +(y+6)^2=13
tatyana61 [14]

Answer:

see explanation

Step-by-step explanation:

the equation of a circle in standard form is

(x - a)² + (y - b)² = r²

where (a, b) are the coordinates of the centre and r is the radius

(x - 8)² + (y + 6)² = 13 is in this form

with centre = (8, - 6) and r = \sqrt{13}



6 0
3 years ago
Which point is located at (-3,6) <br><br> A) A<br><br> B) B<br><br> C) C<br><br> D) D
Andrej [43]

Answer is A

Step-by-step explanation:

Go over to the left 3 times then up 6

3 0
3 years ago
The unit price of a 128-ounce jug of milk is 4.8 cents per ounce. A 64-ounce carton of milk has a unit price of 5.1 cents per ou
givi [52]
Pretty sure it’s $0.38. Hope this helped :)
3 0
3 years ago
Read 2 more answers
How are algebraic expressions used to represent and solve problem
spin [16.1K]

The purpose of solving an algebraic expression in an equation is to find the unknown variable. When two expressions are equated, they form an equation and therefore, it becomes easier to solve for the unknown terms. To solve an equation, place the variables on one side and the constants on the other side.

Sure hope this helps

8 0
2 years ago
Solve the equation 12+ 0.35×=20.05
lbvjy [14]
12 + 0.35X = 20.05
12 + 0.35X - 12 = 20.05 - 12
0.35X = 8.05 
0.35X/0.35 = 8.05/0.35
X = 23
Hope this helps!! 
8 0
3 years ago
Other questions:
  • Please help for brainliest!! <br> 45 POINTS !!
    8·2 answers
  • How do I do these types of problems? (And how do I do this one specifically)
    5·2 answers
  • Your girlfriend just won the florida lottery. she has the choice of $13,800,000 today or a 20-year annuity of $1,050,000, with t
    7·1 answer
  • Find the value of two numbers if their sum is 23 and their difference is 5
    10·1 answer
  • A car leaves Orlando, FL and travels east toward West Palm Beach. The
    8·2 answers
  • Solve system by elimination <br> -9x+7y=22<br> 9x-5y=-26
    9·1 answer
  • The sum of two consecutive numbers is n+1. What are the numbers?
    7·1 answer
  • Two parallel lines are cut by a transversal as shown below
    12·1 answer
  • I really need some help
    5·1 answer
  • At the grocery store, apples are one price and chocolate bars are another. mary buys three apples and one chocolate bar for $2.7
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!