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bulgar [2K]
3 years ago
5

Which information is typically found on a map key?

Mathematics
1 answer:
Elodia [21]3 years ago
6 0

Answer:

The Answer is (A)

Step-by-step explanation:

A sample of each symbol (point, line, or area), and a short description of what the symbol means

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2. Abby found the axis of symmetry, x-coordinate, the vertex, and y-intercept
krek1111 [17]

Using quadratic function concepts, it is found that Abby made a mistake on the coordinates of the vertex, which are (-4,1).

----------------------

  • A quadratic function is defined by:

y(x) = ax^2 + bx + c

  • The y-intercept is given by point: (0, y(0))
  • The vertex is given by: (-\frac{b}{2a}, y(-\frac{b}{2a})).
  • The axis of symmetry is: x = -\frac{b}{2a}

----------------------

The function given is:

f(x) = -x^2 - 8x - 15

  • Which is a quadratic equation with: a = -1, b = -8, c = -15.
  • f(0) = -0^2 - 8(0) - 15 = -15, thus, the y-intercept is (0, -15).

x_v = -\frac{b}{2a} = -\frac{(-8)}{2(-1)} = \frac{8}{-2} = -4

  • Thus, the <u>x-coordinate of the vertex</u> is x = -4, which is the same as the <u>axis of symmetry</u>.

f(-4) = -(-4)^2 - 8(-4) - 15 = 1

  • The vertex is given by: (-4,1).

A similar problem is given at brainly.com/question/14680175

8 0
3 years ago
In a survey of 1,300 women who gave birth in Maine in 2003, a total of 588 reported taking a multivitamin at least 4 times a wee
vesna_86 [32]

Using it's concept, it is found that the prevalence of frequent multivitamin use is of 0.4523 = 45.23%.

<h3>What is the prevalence of a sample?</h3>

The prevalence of a sample is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

In this problem, 588 out of 1300 women reported taking a multivitamin at least 4 times a week during the month before pregnant, hence the prevalence is given by:

p = 588/1300 = 0.4523 = 45.23%.

More can be learned about prevalence at brainly.com/question/14398287

#SPJ1

5 0
3 years ago
The radius of the Morgan family’s circular swimming pool is 8 feet what is the area of the pool cover the Morgan’s use to cover
suter [353]
The working out would be-
Pi x radiussquared
Pi x 64 = 201.0619298297468
Rounded to 2 decimal places =
201.06 feet2
4 0
3 years ago
In a rectangle, the ratio of the width to the length is 4:5. If the rectangle is 40
Marina CMI [18]

Answer:

50 cm

Step-by-step explanation:

4/5 = 40/x

cross multiply

4x=200

x=50

4 0
3 years ago
Read 2 more answers
SOMEONE HELP ME PLEASE
N76 [4]

Answer:

you did not provide the numbers to answer any question...

but the formula that you want is probably this one

Combination Formula nCr=n!(n−r)!r!

Step-by-step explanation:

4 0
3 years ago
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