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Helen [10]
3 years ago
15

Plzzz help me i am timed

Mathematics
2 answers:
fgiga [73]3 years ago
6 0

2.74 + 3.5 = 6.24

Answer

6.24

------------

- 1.5 - (-7.7)

= - 1.5 + 7.7

= 6.2

Answer

6.2

LiRa [457]3 years ago
4 0

6.24, 2.74-(-3.5), 2 negatives make a positive. 6.2, -1.5-(-7.7) making 7.7 positive

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Evaluate x^-2 for x = -3.
Hitman42 [59]

Hey there!

If x = -3 then replace "x" with -3

New equation: -3^-2

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This your answer is: 1/9

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

3 0
3 years ago
Each marble bag sold by Lucy's Marble Company contains 7 yellow marbles for every 5 green marbles. If a bag has 45 green marbles
Elan Coil [88]

Answer:

63 yellow marbles

Step-by-step explanation:

You can set up this equation as a proportion:

7/5 = x/45

Divide 45 by 5 to see what 7/5 must be multiplied by to get to x/45.

You should get 9, so also multiply 7 by 9 to get this:

7/5 = 63/45

This shows that there are 63 yellow marbles for 45 green marbles.

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