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2 years ago

Bella downloaded 34 more songs than Porter downloaded. Together they downloaded 220 songs. How many songs did each download?

Mathematics

2 answers:

Wittaler [7]2 years ago

6 0

Answer:

porter 93

bella 127

Step-by-step explanation:

x+x+34=220

2x=186

x=93

porter 93

bella 127

andre [41]2 years ago

6 0

Let’s represent Bella as x and porter as y
So Bella has y+34
So that makes
Y+Y+36=220
2y=184
Y=93
So Bella has (93+34) and porter has 93
If you add them all to check it will must equal 220
Bella=127 porter=93
Please mark me as the brainiest

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zimovet [89]

The password format is = inpray93

vowel , consonant, consonant, consonant, vowel, consonant, number, number.

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Since, there are 21 consonants and repetition is allowed so for 2nd, 3rd, 4th, and 6th positions 21 choices are available. For 1st and 5th positions, 5 choices are available and for 7th and 8th position there are 10 choices (0 to 9).

Passwords are not case sensitive which means upper case and lower case letters are same.

So, the number of passwords can be =

$5\times21\times21\times21\times5\times21\times10\times10$

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Part (b) question is not given. But it can be opposite to the first part i.e when the password letters are case sensitive.

This means all the letters are different.

So, number of passwords will be =

$10\times42\times42\times42\times10\times42\times10\times10$

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4 0

3 years ago

2. What percent of rolling a 2 3 probability of getting HH

faust18 [17]

Answer:

2. The correct answer option is 25%.

3. The experimental probability is 3% greater than the theoretical probability.

Step-by-step explanation:

2. We are given that a number cube is rolled 20 times out of which 5 times it lands on the number 2.

We are to find the experimental probability of getting the number 2.

P (2) = $\frac{5}{20} \times 100 =\frac{1}{4} \times 100$ = 25%

3. The theoretical Outcomes are: HH HT TH TT

So theoretical probability of getting HH = $\frac{1}{4} \times 100$ = 25%

Total number of outcomes = $28+22+34+16$ = 100

So experimental probability of getting HH = $\frac{28}{100} \times 100$ = 28%

Therefore, the experimental probability is 3% greater than the theoretical probability.

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2 years ago

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Answer:

6.51

Step-by-step explanation:

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3 years ago

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3 years ago

Laura has a step of 50cm She walks along by taking two steps forward and one step back. What is the least number of steps counti

Vilka [71]

Answer:

The least number of steps she takes to reach 20 m is 118 steps

Step-by-step explanation:

For Laura, the length of a walking step = 50 cm = 0.5 m

The repeating number of steps she takes = Two steps forward one step backwards

The number of forward steps it would take for her to reach 20 m = (20 m)/(0.5 m) = 40 steps

Given that she always takes two steps forward and one step backwards, we have;

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The number of steps forward every three steps = 2 - 1 = 1 step forward

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3 years ago

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