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3 years ago

Factorise 4x squared - y squared

Mathematics

2 answers:

fiasKO [112]3 years ago

8 0

You can't factor this any further.

babymother [125]3 years ago

3 0

$4 x^{2} - y^{2}$
This is not factorable because nothing has a relationship to each other.

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The? half-life of a radioactive substance is 20 years. If you start with some amount of this? substance, what fraction will rema

yarga [219]

$\bf \textit{Amount for Exponential Decay using Half-Life} \\\\ A=P\left( \frac{1}{2} \right)^{\frac{t}{h}}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\\ t=\textit{elapsed time}\dotfill &120\\ h=\textit{half-life}\dotfill &20 \end{cases} \\\\\\ A=P\left( \frac{1}{2} \right)^{\frac{120}{20}}\implies A=P\left( \frac{1}{2} \right)^6\implies A=P\left( \cfrac{1^6}{2^6} \right)\implies A=\cfrac{1}{64}P$

6 0

4 years ago

No link or bot answer the question

Alex

Answer:

Step-by-step explanation:

76+2^2

76+4÷4^4

76+4÷16

80÷16

3 0

3 years ago

Read 2 more answers

What is the surface area of the square pyramid?

Marrrta [24]

Answer:

Right square pyramid

Solve for surface area

A=a2+2aa2

4+h2

a Base edge

Enter value

h Height

5 0

3 years ago

20 points!!!!

leva [86]

Answer:

6/7

Step-by-step explanation:

Product of slope of perpendicular line = -1

Slope = $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\$

$= \frac{7-0}{3-9}\\\\=\frac{7}{-6}\\\\=\frac{-7}{6}$

Slope of the perpendicular line = -1/m = -1 ÷ $\frac{-7}{6}$

$= -1 * \frac{-6}{7} = \frac{6}{7}$

6 0

3 years ago

A utility company charges $0.12 per kilowatt-hour for energy a customer uses.They give a credit of $0.0025 for every kilowatt-ho

Romashka [77]

Answer:

2,324.

Step-by-step explanation:

Given that a utility company charges $ 0.12 per kilowatt-hour for energy a customer uses, and they give a credit of $ 0.0025 for every kilowatt-hour of electricity a customer with a solar panel generates that they don't use themselves, if a customer has a charge of $ 82.04 and a credit of - $ 4.10 on this mouth bill, to determine how many kilowatt-hours did they use the following calculation must be performed:

(82.04 / 0.12) + (-4.10 / - 0.0025) = X

683,666 + 1,640 = X

2,323.66 = X

Thus, rounded to the nearest whole number, users used 2,324 kilowatts per hour.

6 0

3 years ago