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4 years ago

Which of the following uses logical deduction to prove the truth (or falsehood) of a specific statement?

1 answer:

7 0

<span>Direct proof. A direct proof is a way of establishing the truth or falsehood of a given mathematical statement by a combination of established facts, usually axioms, lemmas and theorems. It assumes the hypothesis of a conjecture is true and then uses a series of logical deductions to prove that the conclusion as well.</span>

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X2 + 2y ÷ w + 3z for w = 2, x = 5, y = 8, and z = 3?

melisa1 [442]

Step-by-step explanation:

w = 2

x = 5

y = 8

z = 3

= x² + 2y ÷ w + 3z

= (5)² + 2(8) ÷ (2) + 3(3)

= 25 + 16 ÷ 2 + 9

= 25 + 8 + 9

= 42

5 0

3 years ago

Helppooooopopopppppp

myrzilka [38]

Answer:

$2\pi \: r$

<h3>4th answer is correct</h3>

Step-by-step explanation:

$2 \times \pi \times r$

7 0

3 years ago

Write the equation Y=mx+b Not just the rate of change

Andreas93 [3]

Answer:

y=2/5x+8/5

Step-by-step explanation:

so say you plot a graph of rain against the hours the gradient would be the rate of change and the information given as your points and the gradient

now to get an equation of a straight line use one of your points eg(1,2) and the gradient or rate of change mine was 0.4

8 0

3 years ago

What’s the answer? And why

lbvjy [14]

B; if P equals one they would ha. have to divided it by 10 so do that to 4.3 and you would get 0.43

4 0

3 years ago

Which of the following is the inverse of y = 12 Superscript x? y = log Subscript one-twelfth Baseline x y = log Subscript 12 Bas

wariber [46]

Answer:

y = lnx/ln12

Step-by-step explanation:

Given the function y = 12^x, to find the inverse of the function, we news to write x as a function of y as shown:

Given y = 12^x

Taking ln of both sides

ln y = ln 12^x

ln y = xln12

Divide both sides by ln12

lny/ln12 = xln12/ln12

x = lny/ln12

x = ln(y-12)

Replacing y with x and x with y

The inverse of the function will be:

y = lnx/ln12

3 0

3 years ago