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balu736 [363]
4 years ago
14

Evaluate the expression when c =7 and y = -2  -c + 8y

Mathematics
1 answer:
kap26 [50]4 years ago
8 0

Answer is:

-7+8(-2)

-7-16

-23


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Emily measures 3 pieces of string with the first piece measures 642 cm the second piece measures 124 cm and the third piece is 1
NeX [460]

Answer: the total length of the string is 9 meters.

Step-by-step explanation:

The total number of strings that Emily measured is 3.

The length of the first piece of string measures 642 cm.

The length of the second piece of string measures 124 cm.

The length of the third piece of string measures 134 cm.

Therefore, the total length of the 3 pieces of string would be

642 + 124 + 134 = 900 cm.

100 cm = 1 m,

Converting 900 centimeters to meters, it becomes

900/1100 = 9 meters

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3 years ago
If ABCD is an isosceles trapezoid, what is the value of x?<br><br><br> AC = 5x - 25<br> BD = 3x + 11
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Step-by-step explanation:

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On a recent road trip, Mr. Yost drove 210 miles in 3 1/2 hours. Find both the miles driven per hour and the hours driven per mil
amid [387]

Miles driven per hour is 60 miles per hour

Hours driven per mile is 0.01667 hours per mile

<em><u>Solution:</u></em>

Given that,

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Therefore,

Miles driven = 210 miles

Time\ taken = 3\frac{1}{2}\ hour = \frac{7}{2} = 3.5\ hour

To find: miles driven per hour and the hours driven per mile

<h3><u>Miles driven per hour</u></h3>

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<h3><u>Hours driven per mile</u></h3>

\frac{hours}{miles} = \frac{3.5}{210}\\\\\frac{hours}{miles} = 0.01667\ hours\ per\ miles

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Step-by-step explanation:


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