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3 years ago

HELPP PLEASEE TAKING A TEST!!

Mathematics

2 answers:

Lapatulllka [165]3 years ago

8 0

15 km because you are dividing 30/2 which is 15

alexgriva [62]3 years ago

4 0

The answer is 15 km I think.

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A bucket contains 40 red balls, 25 black balls, and 35 white balls. Two balls are drawn at random. What is the probability that

Lyrx [107]

Answer:

$Probability = \frac{1}{5}$ or $Probability = 0.2$

Step-by-step explanation:

Given

$Black = 25$

$White = 35$

$Red = 40$

Required

Determine the probability of selecting Black and Red

First, we need to calculate the number of red and black balls

The probability is calculated as thus:

$Probability = P(Black\ and \ Red) \ or\ P(Red\ and \ Black)$

Convert to mathematical expressions

$Probability = [P(Black) *P(Red)] + [P(Red) *P(Black)]$

Solve for each probaility;

$P(Black) = \frac{Black}{Total} = \frac{25}{100}$

$P(Red) = \frac{Red}{Total} = \frac{40}{100}$

So, we have:

$Probability = [P(Black) *P(Red)] + [P(Red) *P(Black)]$ $Probability = [\frac{25}{100} *\frac{40}{100}] + [\frac{40}{100} *\frac{25}{100}]$

$Probability = [\frac{1000}{10000}] + [\frac{1000}{10000}]$

$Probability = [\frac{1}{10}] + [\frac{1}{10}]$

$Probability = \frac{1+1}{10}$

$Probability = \frac{2}{10}$

$Probability = \frac{1}{5}$

$Probability = 0.2$

7 0

3 years ago

Please help question in the picture

bulgar [2K]

Answer:

I think letter A would be the answer

3 0

3 years ago

I need help please?!!!!!

igor_vitrenko [27]

Answer:

Tax=6%

So original price=100%

New price =100%+6%=106%

10.5*(106/100)=

10.5*1.06=11.13

55*1.06= 58.3

58.3-11.13= 47.17

The difference is 47 dollars

$47

4 0

3 years ago

Amanda starts the music city marathon at 6:00 am the marathon is 42 kilometers long if she runs 6 kilometers an hour what time w

Phantasy [73]

7 hours later.
If her rate is
6km/hour
then if we do some simple math
6/1=42/7
In 7 hours Amanda will b finished with the marathon

5 0

4 years ago

Read 2 more answers

Given these angles: m∠3 = 82°, m∠4 = 98°.

RSB [31]

These angles are supplementary.
Complementary angles add up to 90 degrees. Supplementary angles add up to 180 degrees. 82 degrees + 98 degrees = 180 degrees.

8 0

3 years ago