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3 years ago

Find the solution to the system of equations represented by the matrix using an inverse matrix

1 answer:

8 0

To find the inverse of a 2x2 matrix: swap the positions of A and D, put negatives in front of B and C, and divide everything by the determinant.

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What is 4/9 - 2/15 in simplest form

Georgia [21]

To subtract 2 fraction we have to make common denominator.
$\frac{4}{9} - \frac{2}{15} = \frac{4*5}{9*5}- \frac{2*3}{15*3} = \frac{20}{45}- \frac{6}{45} = \frac{20-6}{45}= \frac{14}{45}$ - its the simpest form

4 0

4 years ago

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Please help me need it now for work I am just dum. Here are the questions and here are the possible answers for the questions. Y

Yakvenalex [24]

Answer:

1. Given

2. Distributive property

4. Division property

Step-by-step explanation:

3 0

2 years ago

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Suppose weight of a baby less than 2 months is normally distributed with mean 11.5 lbs and standard deviation 2.7 lbs, what prop

Lera25 [3.4K]

Step-by-step explanation:

First calculate the z-score.

z = (x − μ) / σ

z = (11.07 − 11.5) / 2.7

z ≈ -0.16

From a z-score table:

P(z<-0.16) = 0.4364

The proportion of babies that weigh less than 11.07 lbs is 0.4364.

3 0

3 years ago

-1/6 times (-9/7) and if you answer correctly i’ll mark your answer brainly and 60 points

Alex_Xolod [135]

Answer:

3/14

Step-by-step explanation:

(−1/6)(−9/7)

= (−1)(−9)

(6)(7)

=9/42

3 0

3 years ago

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Solve this plss I need help :c<br>2/3(3х + 9) = - 2(2x + 6)<br>

Lena [83]

Answer:

$x=-3$

Step-by-step explanation:

$\frac{2}{3}\left(3x+9\right)=-2\left(2x+6\right)$

Expand:

$\frac{2}{3} *3x+\frac{2}{3} *9=-2*2x+(-2)(6)$

$2x+6=-4x-12$

Subtract 6 from both sides:

$2x+6-6=-4x-12-6$

$2x=-4x-18$

Add 4x to both sides:

$2x+4x=-4x-18+4x$

$6x=18$

Divide both sides by 6:

$\frac{6x}{6}=\frac{-18}{6}\\$

$x=-3$

7 0

3 years ago

Read 2 more answers