Where does the irrational number 1.8693… fall?
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if you want just round to 1.9
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The triangles are similar. If DE = 12, EF = 10, and BC = 5, find AB.
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2+6(9-3•3)-2
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(9-3) (6x3)
2+6(18)-2
2+6
8(18)-2
144-2
142
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Answer:
Step-by-step explanation:
To express "twice the difference of a number and 5" algebraically, we can follow these steps:
Step 1: Let's represent the unknown number as 'x'.
Step 2: The difference of a number and 5 is obtained by subtracting 5 from the number, which gives us 'x - 5'.
Step 3: To find "twice the difference," we multiply the difference by 2, resulting in '2(x - 5)'.
Therefore, "twice the difference of a number and 5" can be expressed algebraically as '2(x - 5)'.
Answers
Answer:
55 mph
Step-by-step explanation:
Let x represent Bob's speed. Then John's speed is x+10, and their respective times are found by ...
time = distance/speed
330/x = 390/(x+10) . . . . . . . the times are the same
330(x +10) = 390x . . . . . . . multiply by x(x+10)
3300 = 60x . . . . . . . . . . . . . subtract 330x
55 = x . . . . . . . . . . . . . . . . . . divide by the coefficient of x
Bob is driving at 55 miles per hour.
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Answers
Answer:
x = 86
Step-by-step explanation:
note: a straight line is regarded to have an angle of 180 degrees.
in this case CUW is a straight line
I shall show you two methods . which ever one you choose will still get the same answer. however understanding both will help you use them for other questions
method 1
therefore in order to solve the value of x we need to get the missing angle in the triangle first which is angle WUV
Angle WUV
notes : a triangle has a total angle of 180 degrees
hence we can create an equation to get the angle WUV
lets make the missing angle as Y , this will help to find the answer.
46 + Y + 40 = 180
now make Y the subject of formula
Y = 180 - 40 - 46
Y = 94
now in order to find x .
since the CUW is a straight line with 180 degrees
hence x = 180 - 94 = 86
x = 86
method 2
since the triangles total angle is 180 degrees and also the straight line is also 180 degrees. we can just add the total of the 2 sides of the triangle ( the two interior angles can be added together to get the value of the exterior one)
40 + 46 = 86
x = 86
Two interior angles is equal to one exterior angle