i need some answers checked 2: Electric boogaloo

7 months agogood

7 months agogood

7 months agoif they're both parallel to a third line that means lines1 and 2 must be parallel to each other, so true

7 months agogood

7 months agogood

7 months agohuh the postulate normally assumes that you know the lines are parallel we don't know that yet, so we are stating that 2 is congruent to 6 6 is congruent to 8 therefore 2 is congruent to 8 which should be the transitive property

7 months agogood

7 months agogood

7 months agoin general consecutive interior angles are not congruent, they'd be supplementary so false

7 months agohm, not quite, 6 and 12 are not corresponding angles (they would have to be in the same position and orientation) notice how 6 and 12 are on the outside side of the parallel lines, making them interior or exterior?

7 months agoexterior

7 months agogood so B

7 months agogood

7 months agohm not quite CE = ED 5x + 80 = 7x - 2 solve for x, then plug back into AE = 4x + 5

7 months agox=41

7 months agogood now plug that into 4x + 5

7 months agomay I see what the proof is?

7 months agogood

7 months agohm not quite 3x - 30 = 90 since its a right angle solve for x

7 months ago40

7 months ago|dw:1529873599319:dw| not quite, they don't have to be perpendicular, the angles just have to add up t o 180

7 months agogood

7 months agohm x = 41 right so CE = 285 CD = 2*CE = 570 to account for both sides of the rectangle 570 + 570 = 1140 applying this same logic to AE AE = 169 AB = 2*169 = 338 338 + 338 = 676 so 1140 + 676 = 1816 (A)

7 months agobasically your previous answer only accounted for half the perimeter

7 months agogood

7 months agosince the end of the fence makes 90 degree angles w/ the sides of the fence by definition the sides of the fence are perpendicular to the end fence so B can't be the solution (we are looking for a false statement) any other ideas?

7 months agoA?

7 months agoif the rows of crops are parallel to the sides and the sides are perpendicular to the end of the fence therefore the rows of crops are perpendicular to the end of the fence making A a true statement so it cannot be the solution

7 months agolet's look at statement C the original problem never states that rows of crops are parallel to the sides of the fence making C the solution

7 months agohm, not quite AE is 169 but it's asking for CD we solved that x = 41 right? so CD = 5x + 80 + 7x - 2 = ?

7 months ago570

7 months agogood so 570 = your sol'n

7 months ago|dw:1529876293655:dw| if its perpendicular to the first line it has to be perpendicular to the second line if the two lines are parallel so true

7 months agobecause <1 and <2 are in the same orientation with respect to the transversal they are ~corresponding angles~

7 months ago|dw:1529876838710:dw| not quite there's only one possible line that can be drawn through P and be perp. to line l

7 months agofor a y-intercept, the x-coordinate must be 0 so it can't be A

7 months agogood

7 months agohm not quite to find the y-intercept, let x = 0 and solve for y in 3x + 4y = 12

7 months ago4.

7 months ago3(0) + 4y = 12 4y = 12 y = ?

7 months ago8

7 months ago4 is being multiplied by y so you have to divide both sides by 4 not subtract

7 months ago3.

7 months agogood so 3 = your sol'n

7 months agohang on, i actually think this is zero

7 months agoa horizontal line has slope 0 not undefined

7 months agogood

7 months agohm not quite remember that a vertical line only has an x not a y take the standard form equation Ax + By = C and replace y with 0

7 months ago|dw:1529878258957:dw| |dw:1529878273213:dw| try to apply this logic to your problem to calculate the slope m

7 months agoso just 8/-2

7 months ago-4

7 months agocareful with your signs (8-0)/(0 - (-2)) = 8/2 not 8/-2 so 4 not -4

7 months agogood

7 months agothat's point slope form standard form should look like Ax + By = C

7 months agoso D

7 months agogood

7 months agonot quite if the equation is y = mx that means it has to pass through the point (0,0)

7 months agowhich of the four lines crosses the origin?

7 months agonotice how only b crosses (0,0) so only line b can be the correct sol'n

7 months ago