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2 years ago

If p stays constant and u is doubled what happens to e? given U=EP

Mathematics

1 answer:

Stolb23 [73]2 years ago

4 0

We are given the expression:

U = E * P

The equality symbol “ = “ means that for all cases, the value of U and E * P must always be equal. This means that whatever happens on the left side, must equally happen on the right side.

So what this actually means is that, if we double U so we must also double the expression E * P, that is:

2 U = 2 (E * P)

However since P stays constant in the process, therefore only E is changed, hence:

2 U = P * 2 E

So we can see that E is also doubled.

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Solve average rate of change (4,-1) (-3,-2)

Vera_Pavlovna [14]

Answer:

$\frac{1}{7}$

Step-by-step explanation:

The slope of the line joining the 2 points is a measure of the average rate of change.

Calculate slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (4, - 1) and (x₂, y₂ ) = (- 3, - 2)

m = $\frac{-2+1}{-3-4}$ = $\frac{-1}{-7}$ = $\frac{1}{7}$ ← average rate of change

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3 years ago

If x = 3 and y = -2, what is the value of the expression x^3-2xy^2?

Nana76 [90]

Answer:

Step-by-step explanation:

The expression is $x^3-2xy^2$ . To find the value, substitute the values x = 3 and y =-2 then follow order of operations.

$x^3-2xy^2\\3^3 -2(3)(-2)^2\\27 -2(3)(4)\\27 - 24\\3$

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2 years ago

Solving linear system, substitution 20x-30y=-50 x+2y=1 HELP PLEASE

hjlf

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 + 12⁶/₇ + 12⁶/₇
 20x = 47¹/₇
 20 20
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3 years ago

Helpppppppppppppppppp

Brilliant_brown [7]

Answer:

Option A; the tournament did begin with 128 teams

Step-by-step explanation:

We can see that this equation is represented by compound interest, in other words an exponential function, either being exponential growth or exponential decay;

f ( x ) = a + ( b )^x, where a ⇒ start value, b ⇒ constant, x ⇒ ( almost always considered ) time, but in this case rounds

Option A; The equation is given to be t ( x ) = 128 * ( 1/2 )^x. Given by the above, 128 should represent the start value, hinting that the tournament did indeed begin with 128 teams

Option B; As the rounds increase the number of teams approach 128. Now mind you 128 is the start value, not the end value, which would mean that this statement is false

Option C; The tournament began with 1/2 teams. Theoretically that would not be possible, but besides that the tournament began with 128 teams, only differed by 1/2 times as much every round. This statement is thus false

Option D; This situation actually represents exponential decay. If each round the number of teams differed by 1/2 times as much, the number of teams remaining is less than before, and thus this models exponential decay, not growth ( statement is false )

Answer : Option A; the tournament did begin with 128 teams

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2 years ago

Quiz Time..... 2² + 4³ × 4³ ? Use explanation!

Anna71 [15]

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2 years ago

Read 2 more answers