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netineya [11]
3 years ago
7

Which expression is equivalent to (9x - 3 1/8)-(7x + 1 3/8)

Mathematics
1 answer:
strojnjashka [21]3 years ago
7 0
2x - 4 1/2 is equivalent
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zaharov [31]

Answer:

18: x=98 y=38

19: x=20 y=50

Step-by-step explanation:

To figure out figure 18 you would first figure out x and a triangle equals 180 so 180- (36+46) which is 180-82= 98 and then there are vertical angles between the right and left side so x is equal to one of the angles on the right so 98+44= 142 and 180-142= 38

Then to figure out figure 19 you would first find y by adding 39 and 91 to get 130 and 180-130=50 and then 180-91 (for the angle in the bottom right for the left triangle) is 89 so 89+71=160 and 180-160 is 20.

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3 years ago
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Write an algebraic expression for the word phrase c divided by 7.
Y_Kistochka [10]

Answer:

D. c/7

Step-by-step explanation:

An algebraic expression refers to the equation. In the question, it says to divide a number (c) by seven, giving you c/7

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3 years ago
Lillian is sanding on this ladder. Think of the ground as 0 on a number line. The steps of the ladder are the same distance apar
Mumz [18]
5/8
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3 years ago
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Volume of a cube is 1728 cm3.Find its surface area​
Leno4ka [110]

Answer:

<h2>a=V⅓=1728⅓≈12</h2><h2 />

Step-by-step explanation:

<h2>Using the formula</h2><h2>V=a3</h2>

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3 years ago
Which of the following fractions is not equivalent to 6/21
andreev551 [17]

Answer:

3/7 and 4/14

Step-by-step explanation:

a) 3/7 is not an equivalent of 6/21 because when you multiply the numerator and the denominator by 2 you get: 6/14

b) 4/14 is not an equivalent

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3 years ago
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