3 years ago

Please answer this question as a fraction, will mark you the brainliest if ur right!

Mathematics

1 answer:

ycow [4]3 years ago

4 0

Answer:

P(RR) = 3/7 * 3/7 = 9/49

P(BB) = 4/7 * 4/7 = 16/49

We want to know P(RR) + P(BB)

P(RR) + P(BB) = 9/49 + 16/49 = 25/49

Step-by-step explanation:

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Use multiplication to find three ratios equivalent to 8:12

tatyana61 [14]

Ok so 8:12 can be 8 to 12, or 8\12

do that help?

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3 years ago

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Pavlova-9 [17]

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Step-by-step explanation:

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2 years ago

I'LL MARK THE CORRECT ANSWER AS BRAINLIEST !!!<br> which one is true?

sergejj [24]

Answer:

2.7

Step-by-step explanation:

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3 years ago

What is the sum of the finite arithmetic series?

mariarad [96]

The underlying arithmetic progression is

-15, 0, 15, 30, ...

starting with $a_1=-15$ and with a common difference of $d=15$ between terms. Recursively, this sequence is given by

$\begin{cases}a_1=-15\\a_n=a_{n-1}+15&\text{for }n>1\end{cases}$

So we have

$a_2=a_1+15$

$a_3=a_2+15=a_1+15\cdot2$

$a_4=a_3+15=a_1+15\cdot3$

and so on, so that the explicit rule for the sequence is

$a_n=a_1+15(n-1)=15n-30$

for $n\ge1$ .

The series consists of 15 terms, since

$195=15n-30\implies15n=225\implies n=15$

So we have

$-15+0+15+\cdots+195=\displaystyle\sum_{n=1}^{15}(15n-30)=15\cdot\frac{15\cdot16}2-30\cdot15=1350$

and the answer would be B.

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3 years ago

Find the other endpoint (E2) given the midpoint (2,2) and<br> endpoint 1 (-3,-2)

Amiraneli [1.4K]

Answer:

( $-\frac{1}{2}$ ,0)

Step-by-step explanation:

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3 years ago