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
AleksandrR [38]
3 years ago
6

Jillian is using integer tiles to add 7 + (-2). She uses the steps below. Jillian has made an error . In which steps does it occ

ur?

Mathematics
2 answers:
riadik2000 [5.3K]3 years ago
8 0

Answer:

Jillian has made an error in steps 4.

Step-by-step explanation:

Given : Jillian is using integer tiles to add 7 + (-2).

To find : Jillian has made an error . In which steps does it occur.

Solution : We have given   integer tiles to add 7 + (-2).

Step 1 :  Jillian take the + 7  tiles , that is correct

Step 2 : Now , Jillian take another - 2 tile , that is also correct.

Step 3 : In this + 2 tiles  cancel the  -2 tile from +7 tiles.

Step 4 : Now he get 2 that is wrong because from the step 3 we get + 5 tile after canceling  + 2 tiles from + 7.

Therefore,  Jillian has made an error in steps 4.

Artyom0805 [142]3 years ago
5 0
Step 4 is the occur.
You might be interested in
You apply for a job and have to take a drug test. You are curious about the error rate for the test so you do some research. You
Ber [7]

Answer:

Test statistic  Z = -1.0

 |Z| = |-1.0| < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

The company that produces the drug test claims that less than 14% of the test results are wrong

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the population proportion P = 14% =0.14

Given that the sample size 'n' = 382 tests

Given that find a study where 47 out of 382 test results using this test were wrong (either a false positive or a false negative).

Sample proportion

                        p = \frac{x}{n} = \frac{47}{382} = 0.1230

Null hypothesis: H₀ : P = 0.14

Alternative Hypothesis:H₁ : P≠ 0.14

<u><em>Step(ii):-</em></u>

Test statistic

              Z = \frac{p-P}{\sqrt{\frac{PQ}{n} } }

         Z = \frac{0.1230-0.14}{\sqrt{\frac{0.14 X0.86}{382} } }

       Z = - 1.0

     |Z| = |-1.0| < 1.96 at 0.05 level of significance.

<u><em>Final answer:-</em></u>

The null hypothesis is accepted

The company that produces the drug test claims that less than 14% of the test results are wrong

               

4 0
3 years ago
WHO EVER HELPS GET 18 POINTS AND BRAINLIEST ANSWER!
pantera1 [17]
1. is 450ft, and #2. is 64ft. 
5 0
3 years ago
Read 2 more answers
Shane and Abha earned a team badge that required their team to collect no less than 2000 cans for recycling. Abha collected 178
dangina [55]

Answer:

2S+178\ge 2,000,

[911,\infty).

Step-by-step explanation:

Let S be the number of cans that Shane had collected.

Abha had collected 178 more cans than Shane did, then Abha had collected S+178 cans.

Shane and Abha earned a team badge that required their team to collect no less than 2000 cans for recycling, this means that

S+S+178\ge 2,000,\\ \\2S+178\ge 2,000.

Solve this inequality:

1. Divide it by 2:

S+89\ge 1,000.

2. Now

S\ge 1,000-89,\\ \\S\ge 911.

The solution set is [911,\infty).

6 0
3 years ago
Help please I only have 10 minutes TT
dsp73

1. 5:15 = 1/3
scale factor is 1/3going from bigger to smaller


2. 2/8 = 1/4

14 x 1/4 = 3.5

X = 3.5

3 0
1 year ago
Help Please!<br> Find the value of x for which ABCD must be a parallelogram.
Pepsi [2]

Answer:

2

Step-by-step explanation:

We know that the opposite sides of a parallelogram are equal so:

25x+1=7x+37

18x=36

x=2

4 0
2 years ago
Other questions:
  • What is the relative minimum of the function ?
    6·2 answers
  • hannah and anthony are siblings who have ages that are consecutive odd integers. the sum of their ages is 92 . which equations c
    14·1 answer
  • A country's population in 1992 was 72 million. In 1998 it was 76 million. Estimate the population in 2012 using the exponential
    7·1 answer
  • Jolene’s clothing store has a sweater that was originally $110 but is now on sale for 38% off. What is the sale price of the swe
    12·2 answers
  • Points b, d, and f are midpoints of the sides of triangle ace. Ec= 30 and df =17. Find ac.
    14·1 answer
  • 49<br> a = 16, c= 20, b=
    15·1 answer
  • The x- and y-coordinates of the focus of a parabola are (1,3) and the directrix is y=-5 . A second parabola is a translation 1 u
    5·1 answer
  • Chegg Detecting acid rain: power by hand. Even though software is used in practice to calculate power, doing the work by hand in
    6·1 answer
  • What is the solution to 5(2x+6)=-4(-5-2x)+3
    10·1 answer
  • Is SSS a triangle theorem?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!