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IgorLugansk [536]

3 years ago

15

Felix signs up for a cell phone that his parents require him to pay for. His bill is $46.80. What impact will his cell phone hav

e on his savings account over the period of a year

2 answers:

kogti [31]3 years ago

7 0

Answe

Step-by-step explanation:

Sergeeva-Olga [200]3 years ago

5 0

Answer:$561.60

Step-by-step explanation: The cost of each month is 46.80 and there is 12 months in a year so 46.80×12=561.60

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If ac =14 find the value of x then find ab and bc

Igoryamba

Answer:

If B is between A and C, AB = x, BC = 2x + 2, and AC = 14, find the value of x. Then find AB and BC.

Step-by-step explanation:

AB=x

BC = 2x + 2BC=2x+2

AC =14AC=14

Required

Determine x, AB and BC.

Since B is between A and C;

AB + BC = ACAB+BC=AC

Substitute x for AB; 2x + 2 for BC and 14 for AC

x + 2x + 2 = 14x+2x+2=14

3x + 2 = 143x+2=14

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3x = 14 - 23x=14−2

3x = 123x=12 '

x = \frac{12}{3}x=

3

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x = 4x=4

Substitute 4 for x in

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AB = 4AB=4

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BC = 8 + 2BC=8+2

BC = 10BC=10

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Solve x^2 +14x=15 by completing the square

ivanzaharov [21]

Answer:

x = -15 and x = 1

Step-by-step explanation:

Since we have to use the complete the square method, we first need to <u>rewrite the equation</u> in the form $x^{2}+2ax+a^{2}=(x+a)^{2}$ .

This results in $x^{2} + 14x + 7^{2} = 15 + 7^{2}$ .

Next, we <u>simplify the equation</u> to get $x^{2} +14x+7^{2} = 64$ .

<u>Factoring </u>the left side gives us $(x+7)^{2} = 64$ .

Finally we <u>solve the equations</u>: $x+7=\sqrt{64}$ and $x+7=-\sqrt{64}$ .

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