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3 years ago

What fractions that are less than 3/5

Mathematics

1 answer:

pychu [463]3 years ago

5 0

Answer:

1/8 and 1/12

Step-by-step explanation:

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What is 2+2a when a=3b and b=1/a^c

Aleksandr-060686 [28]

Answer:

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Step-by-step explanation:

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3 years ago

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Riley wants to make 100ml of 25% saline but only has access to 12% and 38% saline mixtures. x= 12% y=38%

notsponge [240]

Answer:

x = 50

y = 50

Step-by-step explanation:

$\begin{bmatrix}x+y=100\\ 0.12x+0.38y=25\end{bmatrix}$

.12(100-y) + .38y = 25

x = 50

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3 years ago

Which is 2logx-6log(x-9) written as a single logarithm

Elena-2011 [213]

Answer: option c.

Step-by-step explanation:

To solve the given exercise and write the expression as a single logarithm, you must keep on mind the following properties:

$m*log(a)=log(a)^m$

$log(a)-log(b)=log(\frac{a}{b})$

Therefore, by applying the properties shown above, you can rewrite the expression given, as following:

$2logx-6log(x-9)=logx^2-log(x-9)^6=log(\frac{x^2}{(x-9)^6})$

Then as you can see, the answer is the option c.

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3 years ago

Divide and express the result in standard form. 8/7-i

Gnoma [55]

$i=\sqrt{-1}\to i^2=-1\ (i-the\ imaginary\ unit)\\----------------------\\\\\frac{8}{7-i}\\\\use\ (a-b)(a+b)=a^2-b^2\\\\\frac{8}{7-i}\cdot\frac{7+i}{7+i}=\frac{56+8i}{7^2-i^2}=\frac{56+8i}{49-(-1)}=\frac{56+8i}{49+1}=\frac{56+8i}{50}=\frac{56}{50}+\frac{8}{50}i\\\\=\boxed{\frac{28}{25}+\frac{4}{25}i}$

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4 years ago

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Simplify: the equation

Studentka2010 [4]

The answer is the last one, the expression is already in the simplest form.

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4 years ago