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3 years ago

Please solve in a big hurry!: will name the Brainliest!!!

Mathematics

2 answers:

trapecia [35]3 years ago

8 0

Answer:

4x+9 = 2x-1

Step-by-step explanation:

dangina [55]3 years ago

7 0

Answer:

Third one

Step-by-step explanation:

nine more than four times a number:

4x+9

x is the "mystery number"

"is the same as" is just another way of saying "equals"

one less than twice the number ("the number" is just x):

2x-1

put them all together:

4x+9=2x-1

don't over look it; break it down

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Y=-1/4x+4 written in stander form

krok68 [10]

Answer:

$\frac{1}{4}x+y=4$

Step-by-step explanation:

standard form is Ax + By = C
In short, get all the variables on the left and the constants on the right

5 0

3 years ago

Find the derivative.

krek1111 [17]

Answer:

$\displaystyle f'(x) = \bigg( \frac{1}{2\sqrt{x}} - \sqrt{x} \bigg)e^\big{-x}$

General Formulas and Concepts:

Algebra I

Terms/Coefficients

Expanding/Factoring

Calculus

Differentiation

Derivatives
Derivative Notation

Basic Power Rule:

f(x) = cxⁿ
f’(x) = c·nxⁿ⁻¹

Derivative Rule [Quotient Rule]: $\displaystyle \frac{d}{dx} [\frac{f(x)}{g(x)} ]=\frac{g(x)f'(x)-g'(x)f(x)}{g^2(x)}$

Step-by-step explanation:

Step 1: Define

Identify

$\displaystyle f(x) = \frac{\sqrt{x}}{e^x}$

Step 2: Differentiate

Derivative Rule [Quotient Rule]: $\displaystyle f'(x) = \frac{(\sqrt{x})'e^x - \sqrt{x}(e^x)'}{(e^x)^2}$
Basic Power Rule: $\displaystyle f'(x) = \frac{\frac{e^x}{2\sqrt{x}} - \sqrt{x}(e^x)'}{(e^x)^2}$
Exponential Differentiation: $\displaystyle f'(x) = \frac{\frac{e^x}{2\sqrt{x}} - \sqrt{x}e^x}{(e^x)^2}$
Simplify: $\displaystyle f'(x) = \frac{\frac{e^x}{2\sqrt{x}} - \sqrt{x}e^x}{e^{2x}}$
Rewrite: $\displaystyle f'(x) = \bigg( \frac{e^x}{2\sqrt{x}} - \sqrt{x}e^x \bigg) e^{-2x}$
Factor: $\displaystyle f'(x) = \bigg( \frac{1}{2\sqrt{x}} - \sqrt{x} \bigg)e^\big{-x}$

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Differentiation

7 0

3 years ago

3. A city planner is measuring the distance of one city block. Which unit of measure should she use: 1 mile, 1 meter, 1/2 inch?

kap26 [50]

Meter :) hope this helps!

5 0

3 years ago

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How to write 168.7 in expanded form

nadya68 [22]

Answer:

100 + 60 + 8 + 0.7

Step-by-step explanation:

Expanded form or expanded notation is a way of writing numbers to see the value of individual digits.

3 0

3 years ago

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M2 L15 #1 Problem Set · ¹/₂ Questions inserted · 7th Grade Mathematics/Algebra · 14 Points

guajiro [1.7K]

Answer:

a) is A b) is D c) is D d) is 2 e) is At lunch time, Benjamin often borrows money from his friends to buy snacks in the school cafeteria. Benjamin borrowed $0.75 from his friend Clyde four days last week to buy ice cream bars. How much does he owe Clyde.

( On question " e) " simply just change the five to a four making him borrow 75 cents 4 times. )

Step-by-step explanation:

3 0

3 years ago

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