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Tresset [83]
4 years ago
7

A math contest requires that participants complete all 12 problems on the contest exam. Each participant receives 5 points for e

ach correctly solved problem and loses 3 points for each incorrect or omitted answer. If I received a score of 36, how many problems did I solve correctly?
Mathematics
2 answers:
IgorLugansk [536]4 years ago
8 0
You got 9 right, because 5x -3y = 36
For you to lose points, having answered all of thee questions, to the point of which you were given 36 out of 60 possible points tells that you must have gotten over half right for points to have been taken away, and the only factors that satisfy the equation with those restrictions would determine that x must equal 9, making the amount you got right worth 45 points, but with y equal to 3, 9 points were taken away from that score, making it 36. This can also be displayed on a x versus y graph. 
Allisa [31]4 years ago
7 0

the answer is nine because 9times 5 equals 45 subtract 9 equals 36


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Find the values of x,y,z. This diagram is not a scale.
Serjik [45]

Important:
                             The sum of the three angles inside
                              every triangle is always 180°.


First, look at the left triangle alone.
Two of its angles are 46° and 58° .  (46° + 58° ) = 104°
That leaves (180° - 104° ) = 76° degrees for the third angle.
The third angle in that triangle is 'x'. 
                                                         x = 76° .

At the point where 'x' and 'z' come together:
'x' and 'z' are a "linear pair".
Placed side-by-side, they form a straight line.
So (x + z) = 180° .
But  x = 76°.
So z = (180° - 76°).              z = 104° .

Now look at the the skinny triangle on the right alone.
The angle at the top is 13°, and  z = 104°. 
(13° + 104°) = 117° . 
That leaves (180° - 117°) = 63° for the third angle.
'y' is the third angle.
                                                 y = 63° .

3 0
3 years ago
Read 2 more answers
Base:10 height:2.5 what is the slope of the ramp​
katen-ka-za [31]

Answer:

<u>Slope</u><u> </u><u>is</u><u> </u><u>B</u><u>.</u><u> </u><u>¼</u>

Step-by-step explanation:

Slope: is hypotenuse

= { \sf{  \frac{ \delta \: height}{ \delta \: base} }} \\  \\ { \sf{ =  \frac{2.5}{10} }} \\  \\  = { \sf{ \frac{1}{4} }}

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The legs of a right triangle are 8 and 9 units long. What is the area of the triangle in square units?
lapo4ka [179]

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36 Hope this helps Im so sorry if this is wrong.

Step-by-step explanation:

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Radius of a circle with 11,304 circuference
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Answer:

1799.08748

Rounded version: 1799

Step-by-step explanation:

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3 0
2 years ago
(K3+2k2-82k-28)/(k+10)
Ne4ueva [31]

So for this, we will be using synthetic division. To set it up, have the equation so that the divisor is -10 (since that is the solution of k + 10 = 0) and the dividend are the coefficients. Our equation will look as such:

<em>(Note that synthetic division can only be used when the divisor is a 1st degree binomial)</em>

  • -10 | 1 + 2 - 82 - 28
  • ---------------------------

Now firstly, drop the 1:

  • -10 | 1 + 2 - 82 - 28
  •       ↓
  • -------------------------
  •        1

Next, you are going to multiply -10 and 1, and then combine the product with 2.

  • -10 | 1 + 2 - 82 - 28
  •       ↓ - 10
  • -------------------------
  •        1 - 8

Next, multiply -10 and -8, then combine the product with -82:

  • -10 | 1 + 2 - 82 - 28
  •       ↓ -10 + 80
  • -------------------------
  •        1 - 8 - 2

Next, multiply -10 and -2, then combine the product with -28:

  • -10 | 1 + 2 - 82 - 28
  •       ↓ -10 + 80 + 20
  • -------------------------
  •        1 - 8 - 2 - 8

Now, since we know that the degree of the dividend is 3, this means that the degree of the quotient is 2. Using this, the first 3 terms are k^2, k, and the constant, or in this case k² - 8k - 2. Now what about the last coefficient -8? Well this is our remainder, and will be written as -8/(k + 10).

<u>Putting it together, the quotient is k^2-8k-2-\frac{8}{k+10}</u>

8 0
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