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ivolga24 [154]
4 years ago
7

|-1.43| - 7.1 + |-1.21| answer please

Mathematics
1 answer:
stellarik [79]4 years ago
8 0

Hello.

Numbers with | | around them are the absolute value, meaning it is always positive.

|-1.43| and |-1.21| become 1.43 and 1.21

The equation is now 1.43 - 7.1 + 1.21

Solve.

1.43 - 7.1 + 1.21

-5.67 + 1.21

-4.46

-4.46 is the final answer.

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2 years ago
You are dealt a hand of three​ cards, one at a time. Find the probability of each of the following. ​a) The first heart you get
boyakko [2]

Answer:

a) 0.145

b) 0.013

c) 0.783

d) 0.586

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b) there are always 13 diamonds in a complete card

Pb = 13/52 × 12/51× 11/50 = 11/850 = 0.013

c) there are always 4 aces, and 48 that are not aces

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d) there are 13 hearts,to get at least one heart we have.

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4 0
4 years ago
Diana purchases 6 pounds of strawberries and 4 pounds of apples for 18.90. Then she realized that this was not enough and purcha
Veronika [31]
<span>6 pounds of strawberries for x pounds and 4 pounds of apples for y pounds. = $18.90.
6x + 4y = 18.90
Then, you add 3 more pounds of each fruit which equals $10.17. 
3x + 3y = 10.17
Then you multiply by -2 which is (-6x) - 6y = -20.34. After that, you add that (read carefully) you would do this. (-6x) + 6x - 6y + 4y = -20.34 + 28.90.
-2y = -1.44 divided by -2.
Y = -1.44/-2
Y = $0.72 per pound of apples.</span><span>Now, plus in the value of Y in equation 2.
3x + 3y = 10.17
3x + 3 * 0.72 = 10.17.
3x + 2.16 = 10.17
-2.16
3x = 10.17 - 2.16
3x = 8.06 /3

Int total, X = $2.68 per pound of strawberry. Hope this helps just read it carefully. </span>
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