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Stolb23 [73]
3 years ago
9

Solve the equation b/4 +2=-1

Mathematics
1 answer:
Tema [17]3 years ago
5 0

Answer:

b = -4

Step-by-step explanation:

\frac{b}{4} + 2 = 1\\\\\frac{b}{4} = -1\\\\b = -4

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Suppose you obtained a Spearman rs of 0.53 from a sample of 13 pairs of scores. For a two-tailed test, such a correlation coeffi
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Answer:

C: p < 0.01

Step-by-step explanation:

We are given;

Spearman rank Correlation Coefficient: rs = 0.53

sample size: n = 13 pairs

Now, from the table attached, tracing n = 13 and locating a corresponding value of rs = 0.53 which falls in between 0.484 and 0.56. Thus, we can see that p is greater than the nominal significance value of 0.05 but less than 0.01.

Thus, correct answer is p < 0.01

3 0
3 years ago
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3 years ago
29. Find the height of the trapezoid. Use this height to find the area. (A =
harkovskaia [24]

Answer:

<em>The area of the trapezium is 168</em>

Step-by-step explanation:

<u>Area of a Trapezoid</u>

Given a trapezoid of parallel bases b1 and b2, and height h, the area is calculated with the formula:

\displaystyle A=\frac{b_1+b_2}{2}h

The trapezoid in the figure has b1=15 and b2=27. We need to find the height. If we focus on triangle BCD, we can calculate the height as the distance EC by using the Pythagora's Theorem:

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The side BC can be found as half the difference of the bases:

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Solving for EC:

EC^2=10^2-6^2=100-36=64

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Now we have the height, calculate the area:

\displaystyle A=\frac{15+27}{2}*8

\displaystyle A=\frac{42}{2}*8

A = 168

The area of the trapezium is 168

5 0
3 years ago
Given the point (3,4) and the slope of 6, find y when x = 27
tatyana61 [14]
Your answer should be 148! (Keep in mind that slope = change in y/ change in x.) Hope I helped!
5 0
3 years ago
What is the answer to find f(-2) for
Oksi-84 [34.3K]

Answer:

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Step-by-step explanation:

5 0
3 years ago
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