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AleksandrR [38]
3 years ago
9

on a multiple choice quiz of 25 questions, a correct answer is awarded 4 points and an incorrect answer is awarded 0 points. sup

pose you guess the answer to every question. if each question has 4 possible answers and each question has only one correct answer, what can you expect your final score to be?
Mathematics
1 answer:
Mademuasel [1]3 years ago
5 0

Answer:

wouldn't that just be 4 out of 25

Step-by-step explanation:


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11th grade geometry:
Aliun [14]

Answer:

<em>The perimeter is 72 units and the area is 149 square units.</em>

Step-by-step explanation:

\triangle SBA has coordinates S(15,-8),B(-2,21) and A(0,0)

Using the distance formula.........

Length of side SB = \sqrt{(15+2)^2+(-8-21)^2}= \sqrt{17^2+(-29)^2}= \sqrt{1130}

Length of side BA= \sqrt{(-2)^2+(21)^2}= \sqrt{445}

Length of side AS =\sqrt{(15)^2+(-8)^2}=\sqrt{289}=17

So, the perimeter of the triangle will be:  (SB+BA+AS)= \sqrt{1130}+ \sqrt{445}+17 =71.71... \approx 72 units.   <em>(Rounded to the nearest unit)</em>

The height of the triangle for the corresponding base SB is 8.89 units.

<u>Formula for the Area of triangle</u>,  A= \frac{1}{2}(base\times height)

So, the area of the \triangle SBA will be:  \frac{1}{2}(\sqrt{1130}\times 8.89)= 149.42... \approx 149 square units.   <em>(Rounded to the nearest unit)</em>

3 0
3 years ago
A square garden has sides that are 17 meters long. Fencing costs $9.00 per meter. How much would it
Papessa [141]

Answer:

$612

Step-by-step explanation:

Each side of the square garden is 17 meters, and fencing costs $9 per meter. "Around" is the key word, as it indicates perimeter. So, we just need to account for each side of the garden, and not the entirety of the garden. So,

17 · 9 = 153

This means that to cover one side of the garden, it would cost $153. Now, we just need to account for all sides of the garden.

153 x 4 = 612

3 0
3 years ago
Read 2 more answers
-5 + x = -8 <br><br><br> PLEASE HELP ME
Anuta_ua [19.1K]

Answer:

X = -3

Step-by-step explanation:

-5 and -8 are like terms, so you can add 5 to the other side. This leaves you with x = -3

4 0
3 years ago
Read 2 more answers
if sarah is 24 years younger than her mother and if the sum of their ages is 68, how old is sarah what would x represent and x-2
timama [110]
2x-24 = 68 2x = 92 so x = 46. Sarah is 22 and her mum is 46.
3 0
4 years ago
The earth has a diameter of 7926.41 miles. what is the circumference of the earth?
frutty [35]
Circumfrence is to a circle as perimeter is to a polygon. The circumfrence of a circle always equals the diameter (or two times the radius, since the radius is half of the diameter) times pi.

The circumfrence would be 7926.41π miles because of this.
Should you round pi to 3.14, the circumfrence would be 7926.41 * 3.14.
This is equal to <span>24888.9274 miles. (round that if needed)</span>
5 0
3 years ago
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