madisontrosclair2
09.02.2021 •
Mathematics
Sally said that when you add or subtract positive or negative decimals, you can change the order of the decimals and still get the same answer. Use these decimals to answer the questions: 6.2 , 5.71, 3.96 , 2.84 (a) Is Sally’s statement always true, sometimes true, or always false? Write two pairs of equations using addition and two pairs of equations using subtraction to support your answer. (b) Write a rule about changing the order of the numbers in adding and in subtracting positive and negative decimals. (c) Is Sally’s statement true for addition and subtraction of three positive or negative decimals? Write two pairs of equations (one pair for addition, and one pair for subtraction) that support your answer.
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Ответ:
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D-d-Dora
D-d-Dora
D-d-Dora
D-d-Dora
Swiper no swiping!
Swiper no swiping!
Oh man
Dora The Explorer!
Ответ:
Length of arc AB = 8.37m
Step-by-step explanation:
The formula for determining the length of an arc is expressed as
Length of arc = θ/360 × 2πr
Where
θ represents the central angle.
r represents the radius of the circle.
π is a constant whose value is 3.14
From the information given,
Radius, r = 8 m
Angle subtended by the arc length of AB, θ = 60 degrees
Therefore,
Length of arc AB = 60/360 × 2 × 3.14 × 8
Length of arc AB = 8.37m rounded up to the nearest hundredth.