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3 years ago

8

The side length of an equilateral triangle is 5 centimeters. Find the length of an altitude. Round your answer to the nearest te

nth.
The length of the altitude is about...
centimeters.

2 answers:

Naddik [55]3 years ago

6 0

Answer:

4.3

Step-by-step explanation:

that's the answer rounded to the nearest tenth

denis-greek [22]3 years ago

4 0

Answer:

4.3

Step-by-step explanation:

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Customers at Costco spend an average of $130 per trip (The Wall Street Journal, October 6, 2010). One of Costco's rivals would l

katrin [286]

Answer:

Step-by-step explanation:

Given the following :

Average amount spent (U) = $130 per trip

Sample size (n) = 25

Sample mean (m) = $135.25

Population standard deviation (sd) = $10.50

Assume a standard distribution.

A.) Null hypothesis ; Alternative hypothesis

Hnull : U ≤ 130 ; Ha : U > 130

B.) value of test statistic :

Z = (m - U) / standard error

Standard Error = sd / sqrt(n)

Standard Error( S.E)= 10.50 / sqrt(25)

S.E = 10.50 / 5 = 2.1

Hence,

Z = (135.25 - 130) / 2.1

Z = 5.25 / 2.1

Z = 2.5

C. Calculate the p-value.

Using the p value calculator by entering the z-score above, the p value obtained is 0.0124

P value = 0.01

D. Calculate the critical value

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2 years ago

Bella weighs 3 pounds. When she is an adult cat, she will weigh about 435% as much as her current weight. Write 435% as a fra

german

<h2>The answer is </h2><h2>435% = 87/20</h2>

7 0

2 years ago

Which is a solution of 1/4+x=0 0.25, 3/4, -3/4, or -0.25.

shtirl [24]

The answer is X= -1/4

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2 years ago

Determine the range of the following graph

Ierofanga [76]

Given:

The graph of a function is given.

To find:

The range of the graph.

Solution:

We know that, the domain is the set of input values and range is the set of output values.

In a graph, domain is represented by the x-axis and range is represented by the y-axis.

From the given graph it is clear that there is an open circle at (-8,-8) and a closed circle at (3,4). It means the function is not defined at (-8,-8) but defined for (3,4).

The graph of the function is defined over the interval $-8$ . So, the domain is (-8,3].

The values of the function lie in the interval $-8$ . So, the range is (-8,4].

Therefore, the range of the function are all real values over the interval (-8,4].

7 0

2 years ago

Hi,so I've tried solving this problem for a while and I just don't get it,if you could give me some ideas I would appreciate it.

ziro4ka [17]

Answer:

187 cm²

Step-by-step explanation:

The bottom rectangle area is easy, it is 15*9 = 135 cm².

To find the area of the triangle, you only need the base width and its height (you don't need the hypotenuse). You can then use the formula: area triangle is base times half height.

The base width is 15-7 = 8 cm

The height is 22-9 = 13 cm

So the area of the triangle is 13*8/2 = 52 cm²

Together with the 135 of the rectangle that sums to 52+135 = 187 cm².

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2 years ago