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andrezito [222]

4 years ago

15

a six foot tall tent standing next to a cardboard box casts a 9ft shadow. if the cardboard box casts a shadow that is 6ft long t

hen how tall is it?

1 answer:

VLD [36.1K]4 years ago

6 0

The shadow will add 1/3 as much height to the object, making the cardboard box 4 feet tall

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jarptica [38.1K]

Answer:

$20

Step-by-step explanation:

I might be wrong but in my work I did this 4,8,12 + 2 = $20 because you have to multiply and add to get the answer and I got it would be $20. Correct me if wrong.

8 0

3 years ago

OLEGan [10]

Answer:

∴ ∠BAD = $sin^{-1}$ (0.2044) = 11.8°

Step-by-step explanation:

i) AD = 9 cm

ii) DC = 3 cm

iii) ∠BCD = 35°

iv) Since AB is parallel to DC and ∠ABD = 90° then we can conclude that ∠BDC = 90°.

v) $\frac{BD}{DC} = \frac{BD}{3\hspace{0.1cm}cm} = tan(35)$ = 0.6128 ∴ BD = 3 $\times$ 0.6128 = 1.84 cm

vi) ∴ sin(∠ BAD ) = $\frac{BD}{AD}$ ⇒ sin(∠ BAD ) = $\frac{1.84}{9}$ = 0.2044

∴ ∠BAD = $sin^{-1}$ (0.2044) = 11.8°

7 0

4 years ago

What’s the derivative of x^2 - 3

geniusboy [140]

Answer:

$\displaystyle \frac{dy}{dx} = 2x$

General Formulas and Concepts:

<u>Calculus</u>

Differentiation

Derivatives
Derivative Notation

Derivative Property [Multiplied Constant]: $\displaystyle \frac{d}{dx} [cf(x)] = c \cdot f'(x)$

Derivative Property [Addition/Subtraction]: $\displaystyle \frac{d}{dx}[f(x) + g(x)] = \frac{d}{dx}[f(x)] + \frac{d}{dx}[g(x)]$

Basic Power Rule:

f(x) = cxⁿ
f’(x) = c·nxⁿ⁻¹

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

$\displaystyle y = x^2 - 3$

<u>Step 2: Differentiate</u>

Derivative Property [Addition/Subtraction]: $\displaystyle y' = \frac{d}{dx}[x^2] - \frac{d}{dx}[3]$
Basic Power Rule: $\displaystyle y' = 2x$

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

Unit: Differentiation

8 0

3 years ago

Mr. Jones asks his students to generate the next two numbers in the sequence beginning –5.5, 11, ....

Alexandra [31]

Answer:

Option D Both students could be correct. Because the numbers are given in the original sequence, it is possible to find a common difference and common ratio between the successive terms.

Step-by-step explanation:

A geometric sequence has a common ratio. Here, that ratio would be 11/-5.5 = -2 if the sequence is geometric. That ratio would mean the next two terms are ...

11 × -2 = -22

-22 × -2 = 44

__

An arithmetic sequence has a common difference. Here, that difference would be 11 -(-5.5) = 16.5 if the sequence is arithmetic. That difference would mean the next two terms are ...

11 +16.5 = 27.5

27.5 + 16.5 = 44

__

These descriptions match those offered by the students, so both could be correct.

5 0

3 years ago

Read 2 more answers

A box of 500 envelopes costs $14.89. Before buying, Mr. Ruiz wants to know the price for one envelope. His son Alan quickly make

Papessa [141]

Answer: brainly.com/question/22661875?answering=true&answeringSource=feedPublic%2FhomePage%2F10

Step-by-step explanation: hope this helps

7 0

3 years ago