Ask question

Ask question

All categories

Nutka1998 [239]

2 years ago

14

can someone tell me the scale factor for this ?! i know for a fact the triangles are similar! idk if my similarity statement is

correct tho... pls help!!!!

1 answer:

Elis [28]2 years ago

7 0

Answer:

The scale factor should be 1:2 cause from 2.1 to 4.2 is doubled and so is 7.5 to 15 and 5.5 to 11.

Step-by-step explanation:

Hope this helps!

You might be interested in

QUESTION<br> WORTH<br> 20 POINTS!!! HELP ASAP PLEASE<br> why am i alive

guajiro [1.7K]

Answer:

Cause you were born, as simple as that. Plenty of people deal with harsh life.

Step-by-step explanation:

That's not a math question BUT

4 0

2 years ago

Read 2 more answers

What is the length of the curve with parametric equations x = t - cos(t), y = 1 - sin(t) from t = 0 to t = π? (5 points)

zzz [600]

Answer:

B) 4√2

General Formulas and Concepts:

<u>Calculus</u>

Differentiation

Derivatives
Derivative Notation

Basic Power Rule:

f(x) = cxⁿ
f’(x) = c·nxⁿ⁻¹

Parametric Differentiation

Integration

Integrals
Definite Integrals
Integration Constant C

Arc Length Formula [Parametric]: $\displaystyle AL = \int\limits^b_a {\sqrt{[x'(t)]^2 + [y(t)]^2}} \, dx$

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

$\displaystyle \left \{ {{x = t - cos(t)} \atop {y = 1 - sin(t)}} \right.$

Interval [0, π]

<u>Step 2: Find Arc Length</u>

[Parametrics] Differentiate [Basic Power Rule, Trig Differentiation]: $\displaystyle \left \{ {{x' = 1 + sin(t)} \atop {y' = -cos(t)}} \right.$
Substitute in variables [Arc Length Formula - Parametric]: $\displaystyle AL = \int\limits^{\pi}_0 {\sqrt{[1 + sin(t)]^2 + [-cos(t)]^2}} \, dx$
[Integrand] Simplify: $\displaystyle AL = \int\limits^{\pi}_0 {\sqrt{2[sin(x) + 1]} \, dx$
[Integral] Evaluate: $\displaystyle AL = \int\limits^{\pi}_0 {\sqrt{2[sin(x) + 1]} \, dx = 4\sqrt{2}$

Topic: AP Calculus BC (Calculus I + II)

Unit: Parametric Integration

Book: College Calculus 10e

4 0

2 years ago

stealth61 [152]

0.1, guessing they mean largest in value

4 0

3 years ago

In the science lab, Will is testing the freezing point of a substance, which should be −24 ∘C. He is changing the temperature at

mars1129 [50]

Answer:

The answer is -3t>-24 which equals t<8

Step-by-step explanation:

4 0

3 years ago

Hi does anyone know how to solve this question if so please show the working out.

tester [92]

Explanation:

The Law of Sines is your friend, as is the Pythagorean theorem.

Label the unmarked slanted segments "a" and "b" with "b" being the hypotenuse of the right triangle, and "a" being the common segment between the 45° and 60° angles.

Then we have from the Pythagorean theorem ...

b² = 4² +(2√2)² = 24

b = √24

From the Law of Sines, we know that ...

b/sin(60°) = a/sin(θ)

y/sin(45°) = a/sin(φ)

Solving the first of these equations for "a" and the second for "y", we get ...

a = b·sin(θ)/sin(60°)

and ...

y = a·sin(45°)/sin(φ)

Substituting for "a" into the second equation, we get ...

y = b·sin(θ)/sin(60°)·sin(45°)/sin(φ) = (b·sin(45°)/sin(60°))·sin(θ)/sin(φ)

So, we need to find the value of the coefficient ...

b·sin(45°)/sin(60°) = (√24·(√2)/2)/((√3)/2)

= √(24·2/3) = √16 = 4

and that completes the development:

y = 4·sin(θ)/sin(φ)

6 0

3 years ago