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3 years ago

Need help asap I don't understand this ?

Mathematics

1 answer:

FromTheMoon [43]3 years ago

8 0

Answer:

Step-by-step explanation:

Subtract corresponding components in the second matrix from those in the first matrix, that is

$\left[\begin{array}{ccc}-6-(-5)&-4-5\\6-(-4)&0-(-1)\\6-6&4-(-4)\end{array}\right]$

= $\left[\begin{array}{ccc}-6+5&-4-5\\6+4&0+1\\6-6&4+4\end{array}\right]$

= $\left[\begin{array}{ccc}-1&-9\\10&1\\0&8\end{array}\right]$ → C

You might be interested in

(Brainlesest) Which inequality is represented by the graph?

Sever21 [200]

Answer:

Step-by-step explanation:

By inspection we can see that the slope of the line is m = 2/5; as x increases by 5, y increases by 2. Next, also by inspection, we see that the y-intercept is (0, 3/2). Using the slope-intercept formula y = mx + b, we get y = (2/5)x - 3/2.

Let's take a look at Answer B: If we divide all three terms by 2, we get:

(2/5)x - y > 3/2. This matches the equation found earlier, y = (2/5)x - 3/2 if we rewrite (2/5)x - y > 3/2 as (2/5)x - 3/2 > y.

Thus, all points that satisfy this inequality are BELOW the y = (2/5)x - 3/2,

Answer B is the correct one.

7 0

3 years ago

Which of the following is the solution set to the inequality −25x+14>20? Select one: A. x < -64 B. x > -64 C. x < -1

Sindrei [870]

Answer:

x< -0.24

Step-by-step explanation:

So this is going to sound stupid, but I got x< -0.24 which is just not an option, but this is how I got it...

-25x+14>20

subtract 14 from each side

-25x>6

divide each side by -25

x< -0.24

I switch the way the sign was facing bc I divided by a negative.

Now I know that this must be wrong, but it makes the most sense because I am pretty sure I did all of the math right. Sorry this probably didnt help , but I did a lot of work to try and get the right answer, so Im not putting that work to waste

8 0

3 years ago

4(x - 1) + 3 - 2 ÷ 2

GREYUIT [131]

Answer:

no solution with given parts of equation

Step-by-step explanation:

4(x-1)+3-2/2=n

4(x+1)+3-1=n

4(x+1)+2=n

4x+4+2=n

4x+6=n

Alternatively:

Slope = 4

x-intercept = -1.5

n-intercept = 6

5 0

3 years ago

Read 2 more answers

A sanitation department is interested in estimating the mean amount of garbage per bin for all bins in the city. In a random sam

bekas [8.4K]

Answer:

The 95.7% confidence interval for the expected amount of garbage per bin for all bins in the city

(48.937 , 50.863)

Step-by-step explanation:

Explanation:-

Given data random sample of 46 bins, the sample mean amount was 49.9 pounds and the sample standard deviation was 3.641

The sample size 'n' =46

mean of the sample x⁻ = 49.9

Standard deviation of the sample S = 3.641

Confidence intervals:-

The 95.7% confidence interval for the expected amount of garbage per bin for all bins in the city

$(x^{-} - t_{\alpha } \frac{S}{\sqrt{n} } ,x^{-} + t_{\alpha } \frac{S}{\sqrt{n} })$

Degrees of freedom = n-1 = 46-1 =45

The tabulated value t₀.₉₆ = 1.794 ( from t-table)

$(49.9 - 1.794 \frac{3.641}{\sqrt{46} } ,49.9+ 1.794 \frac{3.641}{\sqrt{46} })$

(49.9 -0.9630 , 49.9+0.9630)

(48.937 , 50.863)

Conclusion:-

The 95.7% confidence interval for the expected amount of garbage per bin for all bins in the city

(48.937 , 50.863)

4 0

3 years ago

I really needdddddd the answers for b it’s due tomorrow super important

devlian [24]

first equation is line B the second one C the third one is A

6 0

3 years ago

Need help asap I don't understand this ?​

Need help asap I don't understand this ?