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Zigmanuir [339]
3 years ago
9

ABCD is a rectangle. Find the length of each diagonal. AC = 2(x – 3) BD = x + 5

Mathematics
1 answer:
postnew [5]3 years ago
3 0
Diagonals of rectangles are equal. AC = BD, so 2(x-3) = x+5. 2x - 6 = x+5. x = 11. Plug this into x+5 and you get 11 +5 = 16.

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If a semi-circle was rotated about the y-axis, like the one shown below, what would be the resulting three-dimensional shape?
nikdorinn [45]

Answer:

Step-by-step explanation:

This rotation would create a sphere.

7 0
3 years ago
Read 2 more answers
9. Jennifer is now 3 years older than Peter. If, in 12 years, the sum of their ages will be 61, how
zaharov [31]

Answer:

  20

Step-by-step explanation:

In 12 years, the sum of their ages will be 24 more than it is now. The sum of their ages now is 61-24 = 37.

If Jennifer is 3 years older than Peter, we have ...

  j + (j -3) = 37

  2j = 40 . . . . . . add 3

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Jennifer is now 20 years old.

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Peter is now 17 years old. In 12 years, they will be 29 and 32, so their ages will sum to 61.

7 0
3 years ago
Worth 41 points!
stepladder [879]

Answer:

4x+3y=23

Step-by-step explanation:

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so 9y=45 and y=5

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5 0
3 years ago
Which angles are adjacent to DFE?<br> Select all that apply.
fgiga [73]

9514 1404 393

Answer:

  (c)  ∠BFD

Step-by-step explanation:

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3 0
3 years ago
The number 3 is an upper bound for the set of roots of this polynomial
Anuta_ua [19.1K]

Answer:

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Step-by-step explanation:

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3 0
4 years ago
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