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garri49 [273]
3 years ago
12

Please help, timed! Will mark brainliest!!

Mathematics
1 answer:
True [87]3 years ago
3 0

Answer:

The answer would be b!

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Help this is due today
Gelneren [198K]

Answer:

2 1/2 I think

Step-by-step explanation:

you find the L.C.M for all the fractions and multiply it. You should end up with whole numbers.

It should look like this

2n+3n=2

n= <u>2n+3n</u><u> </u> = <u>5</u>

2 2

n= 2 1/2

8 0
2 years ago
Find the sum of the first 5 terms of the following geometric series.<br><br> 512 - 256 + 128 +...
olga55 [171]

Answer:

352

Step-by-step explanation:

512 - 256 + 128 - 64 + 32 = 352

3 0
3 years ago
I know one of the answers is 25, please help me find the other!
Nadusha1986 [10]

Answer:

five to the second power.

6 0
3 years ago
Of the 2,598,960 different five-card hands possible from a deck of 52 playing cards, how many would contain all black cards.
kumpel [21]

Answer: 65,780

Step-by-step explanation:

When we select r things from n things , we use combinations and the number of ways to select r things = ^nC_r=\dfrac{n!}{(n-r)!r!}

Given : The total number of playing cards in a deck = 52

The number of different five-card hands possible from a deck = 2,598,960

In a deck , there are 26 black cards and 26 red cards.

The number of ways to select 5 cards from 26 cards = ^{26}C_{5}=\dfrac{26!}{(26-5)!5!}

=\dfrac{26\times25\times24\times23\times22\times21!}{21!(120)}=65780

Hence, the number of different five-card hands possible from a deck of 52 playing cards such that all are black cards = 65,780

3 0
3 years ago
X+2=12<br><br> Please take my points
Pavel [41]
X + 2 = 12
subtract both sides by 2
x = 10
3 0
3 years ago
Read 2 more answers
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