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3 years ago

Choose all the equations that are true if x=9

Mathematics

2 answers:

Pani-rosa [81]3 years ago

6 0

Answer:yr

Step-by-step explanation:rt5r

Ymorist [56]3 years ago

4 0

D it’s the answer !!

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What does this equal -5/6+(-5/6)=

Contact [7]

Answer:

-5/3

Step-by-step explanation:

5 0

1 year ago

A block of ice has a square top and bottom and rectangular sides. At a certain point in

Lilit [14]

Answer:

$\frac{dV}{dt} = 360 \ cm^3/h$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Geometry

Volume of a Rectangular Prism: V = lwh

Calculus

Derivatives

Derivative Notation

Differentiating with respect to time

Basic Power Rule:

f(x) = cxⁿ
f’(x) = c·nxⁿ⁻¹

Step-by-step explanation:

Step 1: Define

$l = 30 \ cm\\w = l\\\frac{dl}{dt} = 2 \ cm/h\\h = 20 \ cm\\\frac{dh}{dt} = 3 \ cm/h$

Step 2: Differentiate

Rewrite [VRP]: $V = l^2h$
Differentiate [Basic Power Rule]: $\frac{dV}{dt} = 2l\frac{dl}{dt} \frac{dh}{dt}$

Step 3: Solve for Rate

Substitute: $\frac{dV}{dt} = 2(30 \ cm)(2 \ cm/h)(3 \ cm/h)$
Multiply: $\frac{dV}{dt} = 360 \ cm^3/h$

Here this tells us that our volume is decreasing (ice melting) at a rate of 360 cm³ per hour.

3 0

3 years ago

What is an equivalent expression for (x+2)+3y

Olegator [25]

Answer: (x+3)+2y

Step-by-step explanation:

yes

7 0

3 years ago

Which expression is equivalent to (2g^5)^3/(4h^2)^3

9966 [12]

$\cfrac{(2g^5)^3}{(4h^2)^3} = \cfrac{2^3 \cdot g^{5\cdot3}}{4^3 \cdot h^{2\cdot3}} = \cfrac{8 g^{15}}{64 h^{6}} =\cfrac{g^{15}}{8h^{6}}$

First option

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3 years ago

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Offering brainless pls help

Scilla [17]

It would be B because it’s the only answer that cannot be divided or multiplied evenly

8 0

3 years ago

Read 2 more answers