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Zarrin [17]
2 years ago
12

Help with my homework I don't understand:/

Mathematics
2 answers:
Yuliya22 [10]2 years ago
8 0

Answer:sorry can't do

Step-by-step explanation:

Anna [14]2 years ago
3 0

Answer:

Sorry I don't know I.m class6

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What is the equation of 1/2x =5/6
LekaFEV [45]

Step-by-step explanation:

\frac{1}{2}x =  \frac{5}{6}

2 \times  \frac{1}{2}x = 2 \times  \frac{5}{6}

x =  \frac{5}{3}

4 0
3 years ago
Two garden plots are to have the same area. One is square and one is rectangular. The rectangular plot is 4 meters wide and 16 m
AlexFokin [52]

side = 8 m

the area of the rectangle = length × width = 16 × 4 = 64 m²

the area of the square = s² ( where s is the length of a side ), hence

s² = 64 ( since areas are equal )

take the square root of both sides

s = √64 = 8 m


7 0
2 years ago
HELP PLEASEEEEEEEEEEEEEE
sineoko [7]

Answer:

I think it's B 121.5

Step-by-step explanation:

I don't feel like explaining how I got that

6 0
2 years ago
Use the recursive formula to find the first five terms in the arithmetic sequence.
nasty-shy [4]

Answer:

3, 1, - 1, - 3, - 5

Step-by-step explanation:

using the recursive formula and f(1) = 3 , then

f(2) = f(1) - 2 = 3 - 2 = 1

f(3) = f(2) - 2 = 1 - 2 = - 1

f(4) = f(3) - 2 = - 1 - 2 = - 3

f(5) = f(4) - 2 = - 3 - 2 = - 5

first 5 terms are 3, 1, - 1, - 3, - 5

6 0
2 years ago
What is the decibel level of the noise from a firecracker with intensity 10^-4 watts per square inch? Use a logarithmic model
vagabundo [1.1K]

Answer:

\large \boxed{\text{110 db}}

Step-by-step explanation:

The intensity β of a sound wave in decibels is given by the formula

\beta = 10 \log \left (\dfrac{I}{I_{0}} \right)

and I₀ = the reference intensity (10⁻¹² W/m²)

Data:

I = 10⁻⁴ W·in⁻²

Calculations:

1. Convert watts per square inch to watts per square metre

\text{Sound level} = \dfrac{10^{-4}\text{ W}}{\text{1 in}^{2}} \times \left(\dfrac{\text{39.37 in}}{\text{1 m}}\right )^{2} = 1.5 \times 10^{-1} \text{ W$\cdot$m}^{-2}

2. Convert the intensity to decibels.

\beta = 10 \log \left (\dfrac{1.5 \times 10^{-1}}{1\times 10^{-12}} \right) = 10\log(1.5 \times 10^{11}) = 10 \times 11 = \textbf{110 db}\\\text{The sound intensity of the firecracker is $\large \boxed{\textbf{110 db}}$}

4 0
3 years ago
Read 2 more answers
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