Ellie is driving at a speed of 55 miles per hour. Let h represent the number of hours that Ellie drive at this speed. Write an algebraic expression to represent the number of miles that Ellie drives during this time
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y=55h
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Lydia tosses two six-sided number cubes.A) List the sample space.B) What is the probability of Lydia rolling pairs of the same number?C) What is the probability that at least one number will be a 3?
which expression is equivalent to 25 a. (8×4-2) ×3 +8 ÷ 2 b.8 x (4-2) ×3 + 8 ÷ 2 c. 8×4-(2×3+8)÷2 d.8×4- 2 ×3 + 8 ÷2
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Answer:
43.30cm²
Step-by-step explanation:
Use Herons formula
S = (a+b+c)÷2
Where a, b, c is the sides of the triangle
If perimeter is 30cm
Since it's an equilateral triangle, all sides are equal.
Then
Perimeter = 3a = 30
a = 30/3 = 10cm
b = 10cm , c = 10cm
Therefore ,s= (10+10+10)÷2 = 30÷2 = 15cm
From Herons formula
Area = square root of s(s-a)(s-b) (s - c)
Area = sq rt 15(15 - 10)(15 - 10)(15 - 10)
Area = sq rt 15.× 5 × 5 ×5
Area = sq rt 1875
Area = 43.30cm²
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Answer:
≈ 43.3 cm²
Step-by-step explanation:
The area (A) of an equilateral triangle is calculated as
A = ( s is the side length )
The 3 sides of an equilateral triangle are congruent, thus
s = 30 ÷ 3 = 10 cm
A = =
= 25
≈ 43.3 cm²
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i dont understadn the questions
Step-by-step explanation:
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Answer:
If you divide first (2 ÷ 3/4) just multiplu when you check your math.
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How am I going to type the answer if there isn't a number underlined
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It means abrasive !!!!!!
Answer:
Abrasive
Step-by-step explanation: