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Leto [7]
3 years ago
6

What is the value of x when x + 7 = 21? A) -28 B) -14 C) 3 D) 14

Mathematics
2 answers:
koban [17]3 years ago
7 0
The answer would be D.)

Because
X+7=21
X=21-7
X=14
DerKrebs [107]3 years ago
4 0
The answer would be D
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The perimeter of a rectangle is 154 feet. The length of the rectangle is 55 feet. What is the width of the rectangle?
alisha [4.7K]
Hi there! Okay well to find out the width when you all ready have the perimeter and length just add up both sides of the length, 55+55=110 okay now just subtract 110 from 154, 154-110=44 now since there are to sides for width in a rectangle divide 44 by 2, 44÷2=22 so your width is 22 now to check add up all your side's: 55+22+55+22=154 ANSWER: width = 22ft
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3 years ago
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mote1985 [20]

Step-by-step explanation:

divide 3.5 by 5.0 (3.5 ÷ 5.0 = 0.7), then multiply 0.7 by 15.0 (0.7 × 15.0 = 10.5), and check by dividing (10.5 ÷ 15.0 = 7.0) the answer is 10.5

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2 years ago
Is 7/9 greater than or less than 0.6
LekaFEV [45]
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compare:  
        (< or >)  
0.7      ?      0.6

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6 0
2 years ago
In what quadrant is the terminal side<br> of -323°?
dexar [7]

Answer:

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Step-by-step explanatio

6 0
3 years ago
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Two planes are the same altitude. From the airport , one plane is 50 km away in the direction of N°60 E and another is 80 km awa
djverab [1.8K]

9514 1404 393

Answer:

  78.5 km

Step-by-step explanation:

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The law of cosines tells us the distance between the planes is ...

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The planes are about 78.5 km apart.

6 0
2 years ago
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