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Elina [12.6K]
3 years ago
13

Solve for x. 5x2+70x+245 = 0

Mathematics
2 answers:
stepan [7]3 years ago
6 0

Answer:

   x = -7

Step-by-step explanation:

Oxana [17]3 years ago
4 0
X is -7. You solve by factoring and setting X to one side of the equation
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Let f(x)=2.912345x^2+3.131579x-0.099999
Rudiy27
A.) Integers are positive and negative counting numbers. So, in order to find the integer coefficients, round off the coefficients in the equation to the nearest whole number. The function for g(x) is:

g(x) = 3x²+3x

B.) Substitute x=4 to the two functions.

f(x) = 2.912345x²<span>+3.131579x-0.099999
</span>f(4) = 2.912345(4)²+3.131579(4)-0.099999
f(4) = 59.023837

g(x) = 3x²+3x
g(4) = 3(4)²+3(4)
g(4) = 60

C.) The percentage error is equal to:

Percentage error = |g(4) - f(4)|/f(4)  * 100
Percentage error = |60 - 59.023837|/59.023837  * 100
Percentage error = 1.65%

D.) If x is a large number, for example x=10 or x=20, then g(x) would be an overestimate. This is because the value of x is raised to the power of 2. So, as the x increases, the corresponding function would increase exponentially. Even at x=4, g(x) is already an overestimate. What more for larger values of x? That means that the gap from the true answer f(x) would increase.
5 0
3 years ago
In the figure YAZ = BAC by angle side angle which angles are congruent by CPCTC
Gelneren [198K]

Answer:

Step-by-step explanation

3 0
3 years ago
Does this graph represent a function? Why or why not?
ExtremeBDS [4]

A Function is defined as the relation between the input and the output where one input can have only one output

When graphing functions, the x-axis denotes the inputs and the y-axis denotes the output of the function

Looking at the graph, we see that for one input (point on the x-axis) we have only one output (point on the y-axis)

Hence, we can say that this graph represents a function

5 0
3 years ago
100 POINTS! SOLVE FOR X. PIC ATTACHED. Random answers will be reported.
Romashka-Z-Leto [24]

Answer:

  • x = 29

Step-by-step explanation:

The angles (2x- 10) and (4x+ 16) are consecutive interior angles and therefore are corresponding

<u>Corresponding angles sum to 180</u>

  • (2x - 10) + (4x + 16) = 180
  • 6x + 6 = 180
  • 6x = 174
  • x = 174/6
  • x = 29
8 0
2 years ago
Fill in the blank so that 81x2+_<br> x+81 is a perfect square trinomial.<br> 81x²+_____<br><br> x+81
densk [106]

the blank is 162

since 81 and 81 are both perfect squares the middle term (blank) will be the product of their roots times 2

√81=9

√81 =9

9 x 9 x 2

= 162

6 0
2 years ago
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