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serious [3.7K]
2 years ago
6

Which are the solutions of the quadratic equation? x^2 = –5x – 3

Mathematics
1 answer:
ollegr [7]2 years ago
3 0
<span>x=<span><span><span>−5</span>2</span>+<span><span><span><span>12</span><span>√13</span></span><span> or </span></span>x</span></span></span>=<span><span><span>−5</span>2</span>+<span><span><span>−1</span>2</span><span>√<span>13</span></span></span></span>
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What is the range of data?
Llana [10]
<span>What is the range of data?
= 96 - 54 = 42

answer

B- 42
------------
</span><span>What is the median of data?

median is the middle number
=(74+75)/2 = 74.5

answer

C-74.5
------

</span><span>What is the mode of data?
mode is the one that </span><span>occurs most often
</span><span>75 is repeated twice

answer

C-75

</span>
5 0
2 years ago
Find the surface area and round to the nearest hundredths place when necessary.
UNO [17]

Answer:

6 x 14 = 84

84 x 2(since there are two small rectangles) = 168

22 x 6 = 132

132 x 2 = 264

264 x 2(since there are two of the same shape) = 528

22 x 14 = 308

308  x 2(since there are two of the same shape) = 616

Now we add up all the areas:

168 + 528 + 616 = 1312 square cm is your answer.

8 0
2 years ago
Angles A and B are complementary. What is the value of x? 34 56 68 79
Lelu [443]

Answer: x = 34°


Explanation:


As per definition, complementary angles add up 90°.


In the figure you see angle A measures x + 22° and angle B measures x.


Therefore, according to the definition, you can set this equation:

       

             x + 22° + x = 90°


Solve for x:


  • start: x + 22 + x = 90
  • combine like terms: 2x + 22 = 90
  • subraction property: 2x = 90 - 22
  • do the operation: 2x = 68
  • division propery: x = 68/2
  • do the operation: x = 34

Answer: x = 34°

8 0
3 years ago
Read 2 more answers
Need answers (ASAP!!!) with equations, please!!
Burka [1]

Answer:

a=6, b=5.5

Step-by-step explanation:

By looking at the sides of the triangles it can easily be seen that some of the sides match up. Side b is similar to the side of 11 and same with side a and the side of 3. Since one side is 16 and the other side on the smaller triangle is 8, the bigger triangle is twice as large than the smaller one. So 3 x 2 = 6 and 11 / 2 = 5.5

4 0
3 years ago
plzzz help A model train is on a track 100 cm from its starting point. Turning a switch displaces the train either forward or ba
Ad libitum [116K]

Answer: B.  |x-100| = 25

Explanation:

Draw out a number line. Mark 75, 100 and 125 on the number line as points A, B, and C in that order. Don't worry about the spacing.

The value of x represents where the train is. So if we had say x = 85, then it would be at location 85 on the number line. Writing |x-100| is the distance from x to 100. The absolute value ensures the distance is never negative. We want this distance to be 25 because after traveling 25 cm, the switch is turned, and the train goes the other way.

6 0
3 years ago
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