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3 years ago

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Mathematics

2 answers:

Musya8 [376]3 years ago

6 0

Answer:

Step-by-step explanation:

jonny [76]3 years ago

5 0

Answer:

<em>Hola!! Can I please know what this is about??</em>

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in a class of 14 boys and 12 girls one of the student is picked in a random what is the probability that the student is a girl

poizon [28]

Step-by-step explanation:

Total number of students =14+12

=26

Probability that a student is a girl

$= \frac{number \: of \:girls}{total \: number \: of \: students} \\ = \frac{12}{26} \\ = \frac{6}{13} \\ therefore \: the \: probability \: that \: \\ a \: student \: is \: a \: girl \: \\ = \frac{6}{13}$

7 0

3 years ago

I need the answer to this, i don’t understand this .

tekilochka [14]

The answer is c........

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3 years ago

Which expression is equivalent to RootIndex 3 StartRoot StartFraction 75 a Superscript 7 Baseline b Superscript 4 Baseline Over

slega [8]

Answer:

B. $\frac{b}{2a^{2}c^3}\sqrt[3]{15b}$

Step-by-step explanation:

Given:

The expression to simplify is given as:

$\sqrt[3]{\frac{75a^7b^4}{40a^{13}c^9}}$

Use the exponent property $\frac{a^m}{a^n}=a^{m-n}$

$\frac{a^7}{a^{13}}=a^{7-13}=a^{-6}$

Use the exponent property $(a^m)^n=a^{m\times n}$

$a^{-6}=a^{-2\times 3}=(a^{-2})^3$

$b^4=b\times b^3\\c^{9}=(c^3)^3$

Reducing $\frac{75}{40}$ to simplest form, we get:

$\frac{5\times 5\times 3}{2^3\times 5}=\frac{15}{2^3}$

Therefore, expression becomes:

$\sqrt[3]{\frac{15(a^{-2})^3\times b\times b^3}{2^3(c^3)^3}}$

Use the cubic root property:

$\sqrt[3]{x^3} =x$ . Thus, the expression becomes:

$\frac{a^{-2}b}{2c^3}\sqrt[3]{15b}$

Using the exponent property $a^{-m}=\frac{1}{a^m}$

$a^{-2}=\frac{1}{a^2}$

So, the final expression is:

$\frac{b}{2a^{2}c^3}\sqrt[3]{15b}$

Therefore, the correct option is option B.

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4 years ago

What is the modal group

Maru [420]

Answer:

Im pretty sure it means the highest number in a group of numbers

Step-by-step explanation:

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3 years ago

Which table shows a constant rate of change 3.25

kirill [66]

Answer:

the third one

Step-by-step explanation:

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3 years ago

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