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Archy [21]
3 years ago
15

Janet has 6 coins worth 47cents

Mathematics
2 answers:
siniylev [52]3 years ago
8 0
1 quarter, 2 dimes, and 2 pennies.
galben [10]3 years ago
3 0
A quarter, two dimes, and two pennies.
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NEEDING HELP ASAP PLEASE :( click on photo
LiRa [457]

9514 1404 393

Answer:

  (1, 1)

Step-by-step explanation:

Did you watch the video?

The y-coefficients have opposite signs and one is a multiple of the other. It is convenient to divide the second equation by 2 and add that to the first.

  (5x -2y) +1/2(4x +4y) = (3) +1/2(8)

  7x = 7 . . . . simplify

  x = 1 . . . . .  divide by 7

__

  4(1) +4y = 8 . . . . substitute for x in the second equation

  4y = 4 . . . . . . . .  subtract 4

  y = 1 . . . . . . . . . . divide by 4

The solution is (x, y) = (1, 1).

6 0
3 years ago
the ratio of weight of an object on planet A to the weight of the same object on planet B is 100 to 3. if an elephant weights 22
ipn [44]
Make a proportion.

\frac{planet A}{planet B} ⇒ \frac{100}{3} = \frac{2200}{x}
Solve for x to find the weight of the elephant on planet B. Cross multiply; (100)(x) and (3)(2200).

You now have:
 100x = 6600.
Divide both sides by 100.

x = 66

The elephant would weigh 66 pounds on planet B.
5 0
3 years ago
Is the equation true, false or open <br><br> 9p+8=10p+7
kifflom [539]
  9p + 8 = 10p + 7
- 9p          - 9p
           8 = p + 7
         - 7        - 7
           1 = p
5 0
4 years ago
A3 + a + a2 + 5 + 7a2 + 4a - 8a2 - 6 =
mamaluj [8]

Answer:

3 + 5 − 1

explination

6 0
3 years ago
Which of these values would you most likely see on a U.S. speed limit sign?
Ira Lisetskai [31]

Answer:

A. 55 miles/hour

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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