Answer:
x1, x2 = 4.74 , -2.74
Step-by-step explanation:
To find the roots of a quadratic function we have to use the bhaskara formula
ax^2 + bx + c
x^2 - 2x - 13
a = 1 b = -2 c = -13
x1 = (-b + √ b^2 - 4ac)/2a
x2 =(-b - √ b^2 - 4ac)/2a
x1 = (2 + √ (2^2 - 4 * 1 * (-13)))/2 * 1
x1 = (2 + √ (4 + 52)) / 2
x1 = (2 + √ 56 ) / 2
x1 = (2 + 7.48) / 2
x1 = 9.48 / 2
x1 = 4.74
x2 = (2 - √ (2^2 - 4 * 1 * (-13)))/2 * 1
x2 = (2 - √ (4 + 52)) / 2
x2 = (2 - √ 56 ) / 2
x2 = (2 - 7.48) / 2
x2 = -5.48 / 2
x2 = -2.74
Twice the sum of a number and 4 is 14. In this case the numbers are added first, and the ANSWER is doubled.
Answer:
3/10 is the answer if u ypi are trying to convert
glad I could help welcome to brainly!!
Answer:
53
Step-by-step explanation:
At first,
- 7 = 9 + x
By subtracting 9 from both sides, we get
-7-9=9+x-9
-16=x
Now,
By substituting the value of x in -3x + 5 , we get
-3x + 5
-3×(-16)+5
48+5
53
Because we are dealing with area, we have to square the difference of the 2 polygons.40 / 15 =
<span>
<span>
<span>
2.6666666667
</span>
</span>
</span>
<span>
<span>
<span>
2.6666666667^2 = </span></span></span>
<span>
<span>
<span>
7.1111111111
</span></span></span>
<span><span><span>
</span>
</span>
</span>
So, the 40 yard polygon has <span>
<span>
7.1111111111</span>times the area of the 15 yard polygon.
</span>
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