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2 years ago

The sum of two numbers is 56, and their difference is 10. What are the numbers?

Mathematics

2 answers:

allochka39001 [22]2 years ago

8 0

The answer is A 33+23 is 56

denis23 [38]2 years ago

8 0

Answer:

Step-by-step explanation: If you add 33 and 23 it'll give you 56.If you subtract them you will get 10.

Therefore, you're answer is A.

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What is the value of the fourth term in a geometric sequence for which a1=10 and r =0.5

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Answer: 1.25

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1 year ago

The table below gives the completion percentage and interception percentage for five randomly selected NFL quarterbacks. Based o

Lina20 [59]

The regression equation is y = -0.42647x + 29.11471 and the correlation coefficient is -0.9607

<h3>How to determine the regression equation?</h3>

The table of values is given as:

Completion Percentage 57 59 62 63 64

Interception Percentage 5 3.5 3 2.5 1.5

Next, we enter the above values in a graphing calculator.

From the graphing calculator, we have the following summary:

Sum of X = 305
Sum of Y = 15.5
Mean X = 61
Mean Y = 3.1
Sum of squares (SSX) = 34
Sum of products (SP) = -14.5
r = -0.9607

Regression Equation = ŷ = bX + a

b = SP/SSX = -14.5/34 = -0.42647

a = MY - bMX = 3.1 - (-0.43*61) = 29.11471

So, the regression equation is

y = -0.42647x + 29.11471

And the correlation coefficient is -0.9607