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2 years ago

How many triangles exist with the given side lengths? 13, 15, 17

Mathematics

1 answer:

aksik [14]2 years ago

7 0

Answer:

Step-by-step explanation:

13, 15, 27 and 13, 27, 15

you could rearrange the order but they would still be the same two triangles in different rotated positions:

15, 13, 27 is the same as 13, 27, 15, just rotated

15, 27, 13 is the same as 13, 15, 27, just rotated

27, 13, 15 is the same as 13, 15, 27, just rotated

27, 15, 13 is the same as 13, 27, 15, just rotated

You might be interested in

List the fractions in descending order of 2/5 8/9 4/5 1/3 3/10

snow_lady [41]

Answer:

8/9, 4/5, 2/5, 1/3, 3/10

Step-by-step explanation:

2/5 = 0.4 8/9 = 0.888 4/5 = 0.8 1/3 = 0.333 3/10 = 0.3

8 0

2 years ago

(Small sample confidence intervals for a population mean) suppose you are taking a sampling of 15 measurements. you find that x=

Luda [366]

Answer:

The 99% confidence interval is $71.67 < \mu < 78.33$

Step-by-step explanation:

From the question we are told that

The sample size is $n = 15$

The sample mean is $\= x = 75$

The standard deviation is $s = 5$

Given that confidence is 99% then the level of significance is mathematically represented as

$\alpha = 100 - 99$

$\alpha = 1\%$

$\alpha = 0.01$

Next we obtain the critical values of $\frac{ \alpha }{2}$ from the normal distribution table

The value is

$Z_{\frac{ \alpha }{2} } = 2.58$

Generally the margin for error is mathematically represented as

$E = Z_{\frac{ \alpha }{2} } * \frac{ s}{ \sqrt{n} }$

=> $E = 2.58 * \frac{ 5}{ \sqrt{15} }$

=> $E = 3.3307$

The 99% confidence interval is mathematically represented as

$\= x -E < \mu < \= x +E$

=> $75 - 3.3307 < \mu$

=> $71.67 < \mu < 78.33$

3 0

2 years ago

Can anyone help with either one of these

Vlada [557]

slope-point form:
we need the slope (m) and a point.
y-y₀=m(x-x₀)
Given two point A(x₁,y₂) and B(x₂,y₂), the slope of the line is :
m=(y₂-y₁) /(x₂-x₁)

Example 3:
we can take two points:
A(12,2)
B(13,7)
m=(7-2) / (13-12)=5/1=5

therefore:
y-2=5(x-12)
y-2=5x-60
y=5x-60+2
y=5x-58

answer: y=5x-58

Example 4:
we can take two points.
A(0,0)
B(3,1)
m=(1-0)/(3-0)=1/3

Therefore:
y-0=1/3(x-0)
y=x/3

answer: y=x/3

4 0

3 years ago

I need help going through the steps of a problem please tell steps and not just answer

mezya [45]

Answer:

x = 5/7

Step-by-step explanation:

4 (0.25 - 2) = x - 0.75 (16 - 8x)

1 - 8 = x - 12 + 6x

1 - 8 + 12 = x + 6x

5 = 7x

5/7 = x

4 0

2 years ago

a group f 4 people share 1/2 pound of almonds.How many pounds of almonds does each person get? Choose an equation you can use to

taurus [48]

Answer:

0.125 pounds

Step-by-step explanation:

If their are four people in a group with 1/2 pound of almonds you would divide 0.5 by 4. You would get 0.5 because 1/2 is equivalent to 0.5.

8 0

2 years ago