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Dmitrij [34]
3 years ago
15

Easy 7th grade pre algebra! Help!

Mathematics
2 answers:
Naddik [55]3 years ago
7 0
Statement A is the false one.
BartSMP [9]3 years ago
5 0
F(x)=(2x+1)(3x-2)
The zero product property says that f(x)=0 when either (2x+1)=0, or (3x-2)=0, or both.
We also know that the zeroes of an equation are the values of x when f(x)=0.
So f(x)=0 when (2x+1)=0 or (3x-2)=0 => x=-1/2 or when x=2/3. which are the roots of f(x).

A. the y-intercepts have nothing to do with the zeroes of f(x).
B. By definition of zero of a function, it is true that the values of x when f(x)=0 are the zeroes of f(x).
C. The zeroes of f(x) are the same as the ones calculated above, so it is true.
D. The x-intercepts of the lines are basically the zeroes of the function f(x), as explained above.  So the statement is true.

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Explain how you determined which operation was needed to write the equation. 9 divided by 3/4
DiKsa [7]

9/ (3/4)

= (9/1)/(3/4)

=(9x4)/(1x3)

=36/3

=12

4 0
3 years ago
Read 2 more answers
What will be the answer for x?
leonid [27]

Answer:

x=8

Step-by-step explanation:

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5x=40

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8 0
3 years ago
Please help find the portion for jogging in degrees?!
irinina [24]

Jogging is given as 20 hours.

Total hours is given as 50.

Jogging = 20/50 hours, which reduces to 2/5.

A full circle is 360 degrees.

Multiply 360 by 2/5:

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5 0
3 years ago
a plane takes off at an angle of elevation of 15 degrees and travels in a straight line for 3,000 meters. What is the height of
nevsk [136]
SOH CAH TOA tells you the sine function of an angle gives the ratio of opposite side to the hypotenuse of the right triangle.
  Sin = Opposite/Hypotenuse
In this problem, the angle is 15°, the hypotenuse is 3000 m and we want to find the length of the opposite side (the height above the ground).

  sin(30°) = height/(3000 m)
Multiplying by 3000 m, we get
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The height of the plane at that instant is ...
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5 0
4 years ago
Divide each of the following by 10, 100, and 1000: 67.8, 456.8, 531.20.
Inessa05 [86]
67.8: 6.78, 0.678, 0.0677
456.8: 45.68, 4.568, 0.4568
531.20: 53.12, 5.312, 0.5312
The pattern here is that the number of 0s there are in the digit of whatever you are dividing by, that is how many places you move the decimal place to the right. For example, by dividing 67.8 by 100, the decimal place has been moved 2 places to the right, resulting in the number 0.678
6 0
4 years ago
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