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trapecia [35]
2 years ago
9

Gina says that for all real numbers a and b, ab=ba. is this statement true or false? If false, give a counterexample

Mathematics
2 answers:
Anika [276]2 years ago
6 0

Answer:

True

Step-by-step explanation:

The communative property states that the order in addition and multiplication dosen't matter.

Yakvenalex [24]2 years ago
3 0

Answer:

true

Step-by-step explanation:

the commutative property of multiplication says that the order of the factors does not change the equation. For Example, 2*3=3*2, =6

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Four interior angles of a pentagon measure 156 degrees 72 degrees 98 degrees and 87 degrees. What is the measure of the final in
zepelin [54]

Answer:

127°

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180°(n - 2) ← n is the number of sides

here n = 5 ( Pentagon), hence

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6 0
3 years ago
Find the area of following figure...?​
MrRa [10]

Answer:

33600 m²

Step-by-step explanation:

The top and bottom horizontal sides are parallel, so this is a trapezoid with bases DC and AB. The height is BC.

area of trapezoid = (a + b)h/2

where a and b are the lengths of the bases, and h is the height.

We need to find the height, BC.

Drop a perpendicular from point A to segment DC. Call the point of intersection E. E is a point on segment DC.

DE + EC = DC

EC = AB = 360 m

DC = 600 m

DE + 360 m = 600 m

DE = 240 m

Use right triangle ADE to find AE. Then BC = AE.

DE² + AE² = AD²

DE² + 240² = 250²

DE² = 62500 - 57600

DE² = 4900

DE = √4900

DE = 70

BC = 70 = h

area = (a + b)h/2

area = (600 m + 360 m)(70 m)/2

area = 33600 m²

4 0
1 year ago
Read 2 more answers
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