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
podryga [215]
2 years ago
6

The work of a student to solve a set of equations is shown: Equation A: y = 4 − 2z Equation B: 4y = 2 − 4z Step 1: −4(y) = −4(4

− 2z) [Equation A is multiplied by −4.] 4y = 2 − 4z [Equation B] Step 2: −4y = 4 − 2z [Equation A in Step 1 is simplified.] 4y = 2 − 4z [Equation B] Step 3: 0 = 6 − 6z [Equations in Step 2 are added.] Step 4: 6z = 6 Step 5: z = 1 In which step did the student first make an error? (5 points)​
Mathematics
2 answers:
mina [271]2 years ago
8 0

Answer:

step 2.

Step-by-step explanation:

dem82 [27]2 years ago
4 0

Answer:

The student made the first mistake in step 2.

Step-by-step explanation:

You might be interested in
The amount of money that college students spend on rent each rent month is usually between 300 and 600.However there are a few s
Ivenika [448]

Answer:

Median

Step-by-step explanation:

The distribution of rent is most likely skewed, and the median is a resistant measurement, unlike the mean.

8 0
3 years ago
Can someone please help me? I keep losing points...
Natalka [10]

Answer:

$14,000

Step-by-step explanation:

i = prt

i= ($70,000)(.04)(5)

i = $14,000

8 0
3 years ago
Read 2 more answers
How many of these integers are not divisible by 5 or 6?
dimaraw [331]

This is an EXAMPLE on how to do this..

The above code shows the following answers: 6,7,12,14,18,21,24,28,30,35,36,42,48,49,54,56,60,63,66,70,72,77,78,84,90,91,96,98

Now the bold numbers 42 and 84 are both divisbile by 6 and 7. Now If I change the || to && in the above code, the result shows only 42 and 84.

What change should I do to remove these 2 numbers from the final result?


4 0
3 years ago
How many pennies could you have if:
Gelneren [198K]

Answer:

The number of pennies owned is 7 pennies

Step-by-step explanation:

The given parameters are;

The number of pennies left over when we break the pennies into groups of 2s = 1 penny

The number of pennies left over when we break the pennies into groups of 3s = 1 penny

Let the number of pennies owned = c

What we are given are as follows;

2 × a = c - 1

3 × b = c - 1

2 × a = 3 × b

a/b = 3/2

Therefore, if we multiply 2 by 3, and 3 by 2 we get 6

2 × 3 = 6, similarly 3 × 2 = 6

If we put 6 = c - 1, we get;

c = 6 + 1 = 7

c = 7

The number of pennies owned = 7 pennies.

4 0
3 years ago
One cell phone plan charges $20 per month plus $.15 per minute used. A second cell phone plan charges $35 per month plus $.10 pe
SOVA2 [1]

20+0.15x = 35+0.10x

0.15x=15+0.10x

0.05x=15

x= 15/0.05

x= 300minutes


check:

300*.015 = 45+20=65

300*0.10 = 30 + 35 = 65

they equal

 so number of minutes would be 300

7 0
3 years ago
Other questions:
  • The area if the of a circle is 111.6 square centimeters. What is the diameter?
    13·2 answers
  • The greatest common factor of 54 and 72 is
    6·2 answers
  • 2. The part of the conditional following "if" is called the _______________.
    12·1 answer
  • A rectangular picture frame has the dimensions shown in
    14·2 answers
  • A movie theater seats 500 people. For any particular show, the amount of money the theater makes is a function, m(n), of the num
    11·1 answer
  • Gary is using an indirect method to prove that segment DE is not parallel to segment BC in the triangle ABC shown below:
    14·2 answers
  • -3x 3y = 3<br> y = -5x - 17
    8·1 answer
  • Please help with this
    12·1 answer
  • In ΔFGH, the measure of ∠H=90°, FH = 39, GF = 89, and HG = 80. What ratio represents the cotangent of ∠G?
    9·1 answer
  • Graph y = – 3x + 6 using the interactive graphing calculator. Which of the following statements are true?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!