2 years ago

Can someone please help me with these questions

1 answer:

3 0

A.) positive correlation

b.) 125

c.) i’m not sure if this is the right answer but - i believe this prediction will not be very reliable because the graph does not have a strong correlation.

You might be interested in

In an experiment to see if light affected the amount of interaction, one group of students was put in a lighted room for an hour

Ludmilka [50]

The Amount of light.

8 0

2 years ago

Read 2 more answers

Lila is making 1/4 of a recipe for a bake sale. The original recipe calls for 2/3 cups of sugar. How much sugar does Lila need t

Assoli18 [71]

Answer:

Step-by-step explanation:

1/4 of 2/3 is just (1/4) / (2/3) or (1/4)(3/2)

1/4 * 3/2= 3/8

She needs to use 3/8 of a cup

4 0

2 years ago

PLEASE HELP! find the inverse matrix

Sauron [17]

Answer:

see explanation

Step-by-step explanation:

The inverse of a matrix A = $\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right]$ is

$A^{-1}$ = $\frac{1}{ad-bc}$ $\left[\begin{array}{ccc}d&-b\\-c&a\\\end{array}\right]$

If ad - bc = 0 then the matrix has no inverse

A = $\left[\begin{array}{ccc}11&-5\\3&-1\\\end{array}\right]$

ad - bc = (11 × - 1) - (- 5 × 3) = - 11 - (- 15) = - 11 + 15 = 4 , then

$A^{-1}$ = $\frac{1}{4}$ $\left[\begin{array}{ccc}-1&3\\-5&11\\\end{array}\right]$ = $\left[\begin{array}{ccc}-0.25&0.75\\-1.25&2.75\\\end{array}\right]$