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DENIUS [597]
2 years ago
7

In a class test containing 10 questions, 5 marks are awarded for every correct answer and (−2) marks are awarded for every incor

rect answer and 0 for questions not attempted.
Heena gets two correct and five incorrect answers out of seven questions she attempts. What is her score?
Mathematics
2 answers:
expeople1 [14]2 years ago
8 0

Answer:

Heena gets 2 correct and 5 incorrect. She attempts only 7 questions so for the remaining 3 questions she will score zero marks.

So total marks scored by Heena is 5×2−5×2+0  i.e 0marks

Step-by-step explanation:

e-lub [12.9K]2 years ago
4 0

Answer:

0 points

Step-by-step explanation:

So first we see that she gets 2 questions correct,

2 * 5 = 10

Then we see that she gets 5 questions wrong,

5 * -2 = -10

Then we see that she doesn't attempt three questions,

3 * 0 = 0;

Now we add up the points,

10 - 10 + 0 = 0 points

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Mike tosses 70%
Ike tosses 67%
Both tosses 50%

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2 years ago
Suppose that we wish to expand (x + y + z)17. what is the coefficient of x 2 y5z10
Delvig [45]
We use the trinomial theorem to answer this question. Suppose we have a trinomial (a + b + c)ⁿ, we can determine any term to be:

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n - m = 2
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Since we know k, we can determine m. Once we know m, we can determine n. Then, we can finally solve for the coefficient.

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Ming used the calculations shown to find out how much he would spend on 6 pounds of ground beef if 10 pounds of ground beef cost
Angelina_Jolie [31]

Answer:

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Step-by-step explanation:

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Unit\ Price = 40\ cents

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Required

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So, after calculating the unit rate, the unit should be:

Unit\ Rate = 0.4\ pound/\$

But instead, he solved as:

Unit\ Rate = \$0.4/ pound

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