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spayn [35]
3 years ago
11

A little help please?

Mathematics
1 answer:
Tasya [4]3 years ago
7 0
3x-10+2x=115
5x-10=115
5x=125
x=25

m<b=3(25)-10=65
m<C=2×25=50
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A student identification card consists
denis23 [38]

Answer:

\frac{1}{30240}

Step-by-step explanation:

Given

ID Card of 5 digits

Possibly Digits = {0,1...,9}

Required

Probability that a card has exact number 94213

First, we have o determine the total possible number of ID card numbers

Let the card number be represented by ABCDE

Given that repetition of digits is not allowed;

<em>A can be any of 10 digits</em>

<em>B can any of the remaining 9 digits</em>

<em>C can be any of the remaining 8 digits</em>

<em>D can be any of the remaining 7 digits</em>

<em>E can be any of the remaining 6 digits</em>

<em />

Total number of cards = 10 * 9 *8 * 7 * 6

Total = 30240

Provided that the card number is generated at random; each card number has the same probability of \frac{1}{30240}

Hence, the probability of having 94213 is \frac{1}{30240}

6 0
3 years ago
If g:<br>x = 2x-3 4 find 9^-1 (-3)​
vfiekz [6]

The inverse function of g(x) will be g⁻¹(x) = (4x + 3) / 2. Then the value of the inverse function, at x = -3, will be 4.5.

<h3>What is inverse of a function?</h3>

Let the function will be

f: X → Y

Then the inverse function will be

f⁻¹: Y → X

The function is given below.

g(x) = (2x – 3) / 4

Then the inverse function of g(x) will be

g⁻¹(x) = (4x + 3) / 2

Then the value of the inverse function, at x = -3, will be

g⁻¹(-3) = [4(-3) + 3] / 2

g⁻¹(-3) = -4.5

Learn more about inverse function here:

brainly.com/question/19425567

$SPJ1

8 0
2 years ago
Help I'll give extra cred if u do​
Schach [20]
I think it’d be 2 and 3 if you’re rounding 2.984
7 0
2 years ago
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Mama L [17]

Answer:

five

Step-by-step explanation:

8 0
3 years ago
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There are 9 students in the school choir. The ratio of girls to boys in the choir is 5 : 4. Two girls are absent from practice o
pishuonlain [190]

Answer:

5:9

Step-by-step explanation:

4 0
3 years ago
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