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irina [24]
3 years ago
11

Solve for x Ps: please be ask Descriptive as possible, so I can learn how to do this Thanks!

Mathematics
1 answer:
Fantom [35]3 years ago
6 0
First you multiply both sides by 10, add 40, divide by 4, then square root

10*(4x^2-40/10)= (36)*10
(4x^2-40)+40=(360)+40
(4x^2)/4=(400)/4
x^2=100
x=10
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umka2103 [35]
I remember doing this question. The question went like:
<span>1.25x + 1.49 = 100
What error did Barbara make in writing the equation?
And the answer would be that Barbaras equation did not consider the number of ice tea drinks. Hence, </span>She put the correct price in the equation but she didn't put the (x) number of iced tea drinks. In other words,This is because she has added 1.25 X the number of water bottles sold to 1.49, the cost of one iced tea. 
So, the correct equation would be:
1.25x +1.49y = 100
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3 0
4 years ago
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avanturin [10]

Answer:

x=20

Step-by-step explanation:

do the equation 3x+50=6x-10

7 0
3 years ago
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Natali5045456 [20]

Answer:

x=90 y=45

Step-by-step explanation:

Answer is C

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3 0
3 years ago
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adelina 88 [10]
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4 0
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The length of a rectangle is 19 centimeters less than six times its width. Its area is 20 square centimeters. Find the width and
anzhelika [568]

Answer:

If the width is 5 cm and the length is 4 cm it satisfies both parts.

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Step-by-step explanation:

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