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masya89 [10]
3 years ago
12

When taking an exam, some students quickly answer all the questions they know how to do. If they go back and revise their answer

s, they start second guessing themselves and end up changing their choice from the correct answer to an incorrect one. Other students work through the exam very slowly - they think things very thoroughly, revise their answers several times, and carefully make sure they have not missed anything. In a class where we have both these types of students together, the correlation between the amount of time spent on an exam and their grade should be: _____________
a. Positive and fairly strong
b. Negative and fairly strong
c. Fairly weak
Mathematics
1 answer:
Trava [24]3 years ago
6 0

Answer:

c. Fairly weak

Step-by-step explanation:

From the given question:

We can deduce that the correlation between those two criteria is fairly weak. This is because the first set of students who initially answered the question started second-guessing themselves, making them unsure about their decision when picking the right answers. They eventually ended up choosing the wrong answers when changing it.

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Simplify the expression: 8–3w+3w+2–8
Ray Of Light [21]
Combine like terms. 3w-3w=0. 8+2-8=2. So the answer is 2. I hope this helps!
4 0
3 years ago
Solve the following quadratic equation.
Nonamiya [84]

Given:

Consider the given equation is

(x-18)^2=1

To find:

The values of x.

Solution:

We have,

(x-18)^2=1

Taking square root on both sides, we get

x-18=\pm\sqrt{1}

x-18=\pm 1

Adding 18 on both sides, we get

x-18+18=\pm 1+18

x=\pm 1+18

Now,

x=1+18 and x=-1+18

x=19 and x=17

Therefore, the correct option is A.

5 0
3 years ago
Don’t really understand it someone help
stich3 [128]

Answer:

<em>n = 8 or n = −2</em> <em>is the correction solution.</em>

Step-by-step explanation:

As the absolute value equation is given:                                      

                                            | n−3 | = 5

We know either n − 3 = 5 or n − 3 = −5

                                               n − 3 = 5            (First Possibility)

                                          n − 3 + 3 = 5 + 3

                                                       n = 8

                                                n − 3 = -5            (Second Possibility)

                                                      n = -5 + 3

                                                      n = -2

                  <em> So, n = 8 or n = −2</em> <em>is the correction solution.</em>

<em>Keywords: absolute value equation</em>

<em>Learn more about absolute value equation from brainly.com/question/680309</em>

<em>#learnwithBrainly</em>

7 0
3 years ago
340 yards increased by 145% is how many yards? Can you please show me how you got your answer.
Studentka2010 [4]
Just turn the percentage to a decimal. 145% becomes 1.45. Then add 1.00 to 1.45. 1 + 1.45 = 2.45

Then multiply. 2.45 * 340 = 833
7 0
4 years ago
I need to know the answers for 1-6 please.
telo118 [61]

1: $1.5

2: $10.5

3: $.40

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5: $.80

6: $10

8 0
3 years ago
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