Ask question

Ask question

All categories

2 years ago

10

A multiple choice test consists of 100 questions. A correct answer is worth 2 marks, while an incorrect answer is worth -1 marks

. If a student receives a score of 89, how many questions did this student answer in correctly

1 answer:

Papessa [141]2 years ago

5 0

Answer:the answer is 44.50

Step-by-step explanation:

since the right answer worth more than the wrong then you have to put 89 divide by 2 because two is how much point the correct answer worth.

You might be interested in

When x = 3, y = 4. What is y when x = 12?

alexdok [17]

Answer:

A)3

Step-by-step explanation:

if im wrong tell me and i will do it again

HOPE THIS HELPS:::)))

8 0

3 years ago

on a lake, Carol rowed a boat for 1/8 mile. Then luke rowed the boat for 3/8 mile. how far did carol and like row in all? simpli

Semmy [17]

Answer:

$Total = \frac{1}{2}$

Step-by-step explanation:

Given

$Carol = \frac{1}{8}$

$Luke = \frac{3}{8}$

Required

How far did they row together

To do this, we simply add the distance they both covered.

$Total = Carol + Luke$

This gives;

$Total = \frac{1}{8} + \frac{3}{8}$

Take LCM

$Total = \frac{1+3}{8}$

$Total = \frac{4}{8}$

Simplify

$Total = \frac{1}{2}$

<em>Hence, they both rowed 1/2 mile</em>

7 0

2 years ago

3<br>Find the value of a <br>in the equation,(3+4√3)(2-a√3)=-18+2√3

ankoles [38]

Given:

The equation is:

$\left(3+4\sqrt{3}\right)\left(2-a\sqrt{3}\right)=-18+2\sqrt{3}$

To find:

The value of a.

Solution:

We have,

$\left(3+4\sqrt{3}\right)\left(2-a\sqrt{3}\right)=-18+2\sqrt{3}$

On simplification, we get

$(3)(2)+(4\sqrt{3})(2)+(3)(-a\sqrt{3})+(4\sqrt{3})(-a\sqrt{3})=-18+2\sqrt{3}$

$6+8\sqrt{3}-3a\sqrt{3}-4a(3)=-18+2\sqrt{3}$

$6+8\sqrt{3}-3a\sqrt{3}-12a=-18+2\sqrt{3}$

$(6-12a)+(8-3a)\sqrt{3}=-18+2\sqrt{3}$

On comparing both sides, we get

$6-12a=-18$

$-12a=-18-6$

$a=\dfrac{-24}{-12}$

$a=2$

And,

$8-3a=2$

$-3a=2-8$

$a=\dfrac{-6}{-3}$

$a=2$

Therefore, the value of a is 2.

3 0

2 years ago

It should take 5.22 minutes to clean a shower. You have 5 showers that need to be cleaned. How many minutes should it t

Eva8 [605]

$5.22min ........1s \\ x...................5s \\\\ x=\frac{5.22min*5\not s}{1\not s} \\\\ \boxed{x=26.1 \ minutes}$

6 0

3 years ago

Read 2 more answers

Write an equation in point slope form when the slope is 1/3 and it passes through the point (5,3)

poizon [28]

Substitute the variable terms with the coordinates and the equation is
3=1/3(5)+b
solve for b

6 0

3 years ago