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3 years ago

2×²+5y-18 if x is 5 and y is 2

Mathematics

1 answer:

natima [27]3 years ago

8 0

the answer is 659 because if x = 5 that means 25x25 = 625

and if y = 2 then 625 + 52 = 677

and then 677-18 = 659

Problem solved

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HELP ASAP photo attached

ankoles [38]

Answer:

D. undefined

General Formulas and Concepts:

Calculus

Derivatives

Derivative Notation

Derivative of a constant is 0

Basic Power Rule:

f(x) = cxⁿ
f’(x) = c·nxⁿ⁻¹

Derivative Rule [Chain Rule]: $\displaystyle \frac{d}{dx}[f(g(x))] =f'(g(x)) \cdot g'(x)$

Trig Derivative: $\displaystyle \frac{d}{dx}[sinu] = u'cosu$

Derivatives of Parametrics: $\displaystyle \frac{dy}{dx} = \frac{\frac{dy}{dt}}{\frac{dx}{dt}}$

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{dx}{dt} = 5$

$\displaystyle \frac{dy}{dt} = sin(t^2)$

Step 2: Differentiate

[x Derivative] Basic Power Rule: $\displaystyle \frac{d^2x}{dt^2} = 0$
[y Derivative] Trig Derivative [Chain Rule]: $\displaystyle \frac{d^2y}{dt^2} = cos(t^2) \cdot \frac{d}{dt}[t^2]$
[y Derivative] Basic Power Rule: $\displaystyle \frac{d^2y}{dt^2} = cos(t^2) \cdot 2t^{2 - 1}$
[y Derivative] Simplify: $\displaystyle \frac{d^2y}{dt^2} = 2tcos(t^2)$
[Derivative] Rewrite: $\displaystyle \frac{d^2y}{dx^2} = \frac{2tcos(t^2)}{0}$

Anything divided by 0 is undefined.

Topic: AP Calculus BC (Calculus I/II)

Unit: Differentiation with Parametrics

Book: College Calculus 10e

5 0

3 years ago

A thermometer falls from a weather

Nesterboy [21]

Answer:

It will take 22 seconds for the thermometer to hit the ground.

Step-by-step explanation:

A thermometer falls from a weather balloon at a height of 7,744 ft.

This means that the initial height is of 7744ft.

h(t) = -16t2 + initial height

$h(t) = -16t^2 + 7744$

How many seconds will it take for the thermometer to hit the ground?

This is t for which $h(t) = 0$ . So

$0 = -16t^2 + 7744$

$16t^2 = 0 + 7744$

$t^2 = \frac{7744}{16}$

$t = \sqrt{\frac{7744}{16}}$

$t = 22$

It will take 22 seconds for the thermometer to hit the ground.

6 0

3 years ago

What is a multiple a factor and prime numbers?

tamaranim1 [39]

A prime number is a number that can be ONLY divided by itself and 1
For example - 7 is a prime number as it can be only divided by itself and 1
Hope it helped ❤

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3 years ago

Divide x^6/(x^2+1) Please help quickly and thank you!

konstantin123 [22]

I think it's x^4.

(Honestly, I feel 90% positive of this answer, so maybe just get one more opinion!)

3 0

3 years ago

Write the numerical expression in words then solve (98-78)×11

Arada [10]

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4 0

4 years ago

2×²+5y-18 if x is 5 and y is 2​

2×²+5y-18 if x is 5 and y is 2