Compute the product using the methods below. if a product is undefined, explain why. a. the definition where ax is the linear combination of the columns of a using the corresponding entries in x as weights. b. the row-vector rule for computing ax. -3 -4 31 a. set up the linear combination of the columns of a using the corresponding entries in x as weights. select the correct choice below and, if necessary, fill in any answer boxes to complete your choice. o a. x121 + x2a2 + + xn an = (x1) a1 + (x2)a2 + (x3)a3 = + + (type the terms of your expression in the same order as they appear in the original expression.) ob. x7a, + xya, + + xp an = (x7)ay + (x)a) = ( + (type the terms of your expression in the same order as they appear in the original expression.) oc. the matrix-vector ax is not defined because the number of columns in matrix a does not match the number of entries in the vector x. od. the matrix-vector ax is not defined because the number of rows in matrix a does not match the number of entries in the vector x.

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75