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Sedbober [7]
2 years ago
15

There 30 giraffes and 6 penguins at the zoo which satement correctly compares the to quanties

Mathematics
2 answers:
topjm [15]2 years ago
8 0

Answer:

answer is A

Step-by-step explanation:

dsp732 years ago
5 0

Answer:

It's A big man

Step-by-step explanation:

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Find the margin of error for the given values of c, o, and n.
Alika [10]

Using the z-distribution, it is found that the margin of error is of 0.059.

We are given the standard deviation for the population, hence the <em>z-distribution</em> is used.

<h3>What is the margin of error for a z-confidence interval?</h3>

It is given by:

M = z\frac{\sigma}{\sqrt{n}}

In which:

  • z is the critical value.
  • \sigma is the population standard deviation.
  • n is the sample size.

In this problem, the parameters are:

  • \sigma = 0.25, n = 49.
  • Confidence level of 0.90, hence, using a z-distribution calculator, the critical value is z = 1.645.

Then:

M = z\frac{\sigma}{\sqrt{n}}

M = 1.645\frac{0.25}{\sqrt{49}}

M = 0.059

The margin of error is of 0.059.

You can learn more about the z-distribution at brainly.com/question/12517818

4 0
2 years ago
The graph of the function f(x) = -(x+6)(x + 2) is shown
Leokris [45]

Answer:

The function is increasing for all real values of x where

x < –4.

Step-by-step explanation:

we have

f(x)=-(x+6)(x+2)

This is a vertical parabola open downward (the leading coefficient is negative)

The vertex (h,k) represent  a maximum

The roots of the function (or x-intercepts) are x=-6 and x=-2

The x-coordinate of the vertex is the midpoint of the roots

so

h=(-2-6)/2=-4

The y-coordinate of the vertex is

substitute the x-coordinate of the vertex in the quadratic equation

k=-(-4+6)(-4+2)

k=-(2)(-2)

k=4

The vertex is the point (-4,4)

The function is increasing in the interval (-∞,-4)

The function is decreasing in the interval (-4,∞)

6 0
3 years ago
Read 2 more answers
Construct a circle with a radius of 8cm, and draw an equilateral triangle inside it. Make sure the length of each side measures
Ipatiy [6.2K]

Answer:

<u>Diagram 1</u>

Draw a circle with a radius of 8 cm, ensuring you have clearly marked the center point (black circle with center C1)

Add a point on the circumference of the circle (point C2)

Draw a second circle of radius 8cm with point C2 as its center (red circle with center C2).

<u>Diagram 2</u>

The red circle intersects the black circle at two points (D and E).

Connect these 2 points of intersection with a line segment.

<u>Diagram 3</u>

Draw a third circle with center D and radius DE (shown in blue)

This circle intersects the black circle at point F.

<u>Diagram 4</u>

Draw 2 line segments to connect points D and E with point F - this is your equilateral triangle inside the circle!

8 0
2 years ago
The volume of a 9 inch cube is?
Sedbober [7]
Answer:

A. 729 cu in

Explanation:

Step 1: 9x9 = 81
Step2: 81x9 = 729
8 0
2 years ago
Teresa wrote this expression to describe the total distance she was going to swim during two swim classes.
frez [133]
I think the answer is the second one, Tessa wasn't sure how far she would swim during the first class. She would swim 3 laps during the second class. The question is confusing, because the equation s+3 is supposed to be the DISTANCE she swam in 2 classes. The problem didn't specify that distance equals laps, but I think the answer is correct
5 0
3 years ago
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