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3 years ago

I need this done by tonight I will good rating+good reward if correct

Mathematics

1 answer:

Slav-nsk [51]3 years ago

4 0

Answer:

A. biased because if people are leaving a fast food restaurant, they are more likely to eat fast food restaurants than if you were to survey them in a more random setting.

B. Representative because her eggs came from multiple sample spaces.

C. biased because the tallest corn stalk is expected to have more ears.

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By decreasing each dimension by 1 unit, the area of a rectangle decrease from 40 square feet (on the left) to 28 square feet (on

Anettt [7]

The was a 30% decrease in area. You started with 40 sq ft and ended up with 28 sq ft. So you lost 40 - 28 = 12 sq ft. Now you need to figure out what percentage of 40 is 12. For that you just simply divide 12 / 40 = 0.30 And to convert 0.30 from a decimal to a percentage, just multiply by 100. 0.30 * 100 = 30%

8 0

4 years ago

Which fraction is the largest 5/7 7/10 10/13 show how u worked out the answer

Ronch [10]

Answer:

$3.1/13$

Step-by-step explanation:

$1.5/7 =0.214286$

$2.7/10=0.27$

$3.1/13 =0.238462$

5 0

3 years 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

Buzz and Jessie are missing each other and their friend Woody They want to meet at Woodys house which is halfway between their a

chubhunter [2.5K]

Answer:

Buzz and woody should see a doctor because they are ugly

Step-by-step explanation:

HOPE THAT HELPS YOU PLEASE MARK ME AS BRANLIEST

8 0

3 years ago

John has an object suspened in the air it has a mass of 50kg and is 50 meters above the ground calcuate the objcects ising poten

satela [25.4K]

Answer: John has an object suspended in the air. It has a mass of 50 kilograms and is 50 meters above the ground. Calculate the object's potential energy.

Step-by-step explanation:

Calculate the potential energy for a 2 kg basketball dropping from a height of 3.5 meters with a velocity of 9.8 m/sec².

6 0

3 years ago