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3 years ago

Help plz!!!!! Plzzz????

Mathematics

1 answer:

mariarad [96]3 years ago

3 0

Answer:

0Step-by-step explanation888 :8

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A drawing of a sailboat was made useing a restangle and two right triangles, as shown. what is the area of the drawing f the sai

ella [17]

Answer:

45 centimeters squared (45 square centimeters - same thing)

Explanation:

First we need the area of each shape

To find the area of a right triangle we multiply the length of the legs and then divide by 2 - ab/2

Triangle 1: 6 centimeters squared

Triangle 2: 9 centimeters squared

To find the area of a rectangle you multiply the length by the width - lw

Rectangle: 30 centimeters squared

Now we add the values together:

6 + 9 + 30 = 45 centimeters squared

That is my answer, if you need anything else or more clarification I will edit this :)

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3 years ago

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Caleb bought raisins in bulk $2.50 per round. He spent a total of $5.75. How many pounds of raisins did he buy?

mestny [16]

$5.75 divided by $2.50= 2.3 pounds

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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.

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3 years ago

Make x the subject a=bx+c

EleoNora [17]

Answer: $x=\frac{a-c}{b}$

Step-by-step explanation:

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What is the value of 2 in 0.259

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The two is in the tenths place.

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