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Dmitriy789 [7]
3 years ago
15

A 7th-grade class has 14 girls and 10 boys. An 8th-grade class has 11 girls and 13 boys. What is the probability of picking a st

udent from each class and having them both be girls? (Write answer as simplified fraction)
Mathematics
1 answer:
melomori [17]3 years ago
4 0

Answer:

14>10   11<13

Step-by-step explanation:

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What is the unit multipliers for weeks and months
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Answer:

Count the number of days in the month and divide that number by 7, which is the number of days in one week. For example, if March has 31 days, there would be a total of 4.43 weeks in the month

Step-by-step explanation:

5 0
2 years ago
If your grade is a 93% and you got 20 points taken off your grade, what will your new grade be?
vodka [1.7K]
Your grade would be 73%
3 0
3 years ago
Match the expression with its factored form. 3x + 9
pogonyaev

Answer:

3(x +3)

Step-by-step explanation:

factored by grouping

3 0
3 years ago
What is the inverse matrix that can be used to solve this systems of equations
Gala2k [10]

Step-by-step explanation:

The answer is OPTION C

Find the Inverse of a 3x3 Matrix.

First

Find the Determinant of A(The coefficients of e

Proceed towards finding the CO FACTOR of the 3x3 Matrix.

+. - +

A= [ 1 -1 -1 ]

[ -1 2 3 ]

[ 1 1 4 ]

The determinant of this is 1.

Find the co factor

| 2 3 | |-1 3 | |-1 2 |

| 1. 4. | |1 4 | |1. 1 |

|-1. -1 | |1 -1 | |1 -1

| 1. 4 | |1. 4| |1 1|

|-1. -1 | |1 -1 | |1. -1

|2. 3| |-1. 3| |-1 2|

After Evaluating The Determinant of each 2x 2 Matrix

You'll have

[ 5 7 -3]

[3 5 -2 ]

[-1 -2 1]

Reflect this along the diagonal( Keep 5,5 -2)

Then switching positions of other value

No need of Multiplying by the determinant because its value is 1 from calculation.

After this

Our Inverse Matrix Would be

[ 5 3 -1 ]

[7 5 -2 ]

[ -3 -2 1]

THIS IS OUR INVERSE.

SO

OPTION C

5 0
2 years ago
Help me out :)) 2(5x-1)+3x !! simplify !!
djyliett [7]
13x-2. 2•5x=10x 2•-1=-2. 10x-2+3x=13x-2
6 0
2 years ago
Read 2 more answers
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