Answer:
8n³ + 10n² - 13n - 15
Step-by-step explanation:
Distribute the factors by multiplying each term in the first factor by each term in the second factor, that is
4n(2n² + 5n + 3) - 5(2n² + 5n + 3) ← distribute both parenthesis
= 8n³ + 20n² + 12n - 10n² - 25n - 15 ← collect like terms
= 8n³ + 10n² - 13n - 15
Answer:
12.5cm
Step-by-step explanation:
the figure appears to be a circle centered around point B, wherein segment CB is a radiai and segment DF is a diameter.
radiai(radius plural) are known to be 1/2 the length of diameters
(1/2) × 25 = 12.5
-5m^2 = -125
m^2 = 25
m = SquareRoot (25)
m = 5
Equation has real number solution.
Answer:The trapezoid has 1 line of reflectional symmetry
Step-by-step explanation:
Answer:
x = 5
Step-by-step explanation:
Since both sides are given, set both sides equal to eachother.
3x + 1 = 5x - 9
Segment CM is on the left and segment MB is on the right. From now on, solve for x.
Step 1: Isolate x by itself by subtracting the lesser value
3x + 1 = 5x - 9
-3x -3x the x's on the left cross out
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1 = 2x - 9
+9 +9 having x on one side
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10 = 2x
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Step 2: Divide each side by 2 to get rid of x's coefficient
10 = 2x
/2 /2
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5 = x
Solution: x = 5
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Solving for CB: Substitute x for both sides since x = 5
3(5) + 1 = side CM
15 + 1 = side CM
16 = side CM
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Solving for CB: Solve for the other side (segment MB)
5(5) - 9 = side MB
25 - 9 = side MB
14 = side MB
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Solving for CB: Lastly, add up the sides
16 + 14 = segment CB
30 = segment CB
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