The following frequency histogram represents the iq scores of a random sample of​ seventh-grade students. iqs are measured to the nearest whole number. the frequency of each class is labeled above each rectangle. use the histogram to answers parts​ (a) through​ (g). iqs of 7th grade students 60 70 80 90 100 110 120 130 140 150 160 0 20 40 60 80 iq scores frequency 1 3 13 46 48 42 32 9 4 2 a histogram titled “iqs of seventh grade students” with a horizontal axis labeled “iq scores” from less than 60 to 160 plus in increments of 10 and a vertical axis labeled “frequency” from 0 to 80 in increments of 10 contains vertical bars of class width 10 with heights as follows, where the horizontal axis ranges are listed first and the heights are listed second: 60 to 70, 1; 70 to 80, 3; 80 to 90, 13; 90 to 100, 46; 100 to 110, 48; 110 to 120, 42; 120 to 130, 32; 130 to 140, 9; 140 to 150, 4; 150 to 160, 2. each bar is labeled with its height. ​(a) how many students were​ sampled? 200 students ​(b) determine the class width.

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

5

step-by-step explanation:

answer: the correct option is d.

explanation:

it is given that the triangle j'k'l' shown on the grid below is a dilation of triangle jkl using the origin as the center of dilation.

from the given graph it is noticed that k(4,8) and k'(2,4). let origin is defined by o and scale factor is defined by k, then

    (1)

distance formula,

put these values in equation (1).

therefore scale factor is     and option d is correct.