Cat scans are becoming incredibly common in children and adolescents. suppose a research team is interested in the effects of early and repeated cat scanning on blood and bone cancers in sweden. the research team decided to collect a list of all children aged 5-15 with blood or bone cancers and retrospectively look at the number of cat scans they have received over the course of their lives. (p25) a) what type of study design is this? observational study

b) what are the exploratory and response variables?

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

use formula for the circle a=3.14

step-by-step explanation:

answer: 1 + 1 = 11

step-by-step explanation: