9514 1404 393
Answer:
A. trapezoid
Step-by-step explanation:
The missing angle U is 86°, the value that makes the total be 360°. Then the top two angles total 180°, as do the bottom two angles. This means sides SV and TU are parallel, but sides UV and ST are not.
The figure has one pair of parallel sides, so is a trapezoid.
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A concave quadrilateral has a reflex angle. This figure does not.
Answer:
i < 3u
Step-by-step explanation:
9x-7i> 3(3x-7u)
to solve for i, first simplify the problem on the right side of the equation.
9x-7i > 9x - 21u
make i the subject by subtracting 9x from both sides of the equation
9x-9x-7i> 9x-9x -21u
add like terms
-7i > -21u
divide both sides of the equation by -7
-7i/-7> -21u/-7
divide and change the sign
i < 3u
Answer:
x=1
Step-by-step explanation:
4(-x+4)=12
-4x+16=12
-16 -16
x=1
Answer:
4r^3+8r^2-5r-10
= 4r^2(r+2)-5(r+2) [Factorise out like terms; distributive law of multiplication to check]
=(4r^2-5)(r+2) [Combine expressions]