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3 years ago

Given 3 please help me

Mathematics

1 answer:

alexandr1967 [171]3 years ago

6 0

Answer:

Give 3 what?

Step-by-step explanation:

I would like to help but I need more information

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A variety of energy bar regularly sells for $1.35, but for one week they were on sale for $0.95.

TiliK225 [7]

Answer:

E) $1.05

Step-by-step explanation:

before sale: $1.35×12=$16.20

during sale: $0.95×(12×3)=$34.20

total money spent=$16.20+$34.20=$50.40

total bars bought=12+(12×3)=48

average=

$\frac{50.40}{48} = 1.05$

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2 years ago

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andrew11 [14]

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3 years ago

How much is 89 km in miles?

laila [671]

89 km would be about 55.3 miles! that's the best answer, but if they want you to round then I'd say choose 55 miles

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3 years ago

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Find the value of x

Dmitry_Shevchenko [17]

Answer:

79 degrees

Step-by-step explanation:

Quadrilaterals have a total of 360 degrees. They already gave you three of them so you just have to add all the given degrees and subtract it by 360. 101+124+56=281 ; 360-281=79

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3 years ago

Which of the following is an extraneous solution of sqrt 4x + 41 = x+5

stiv31 [10]

Answer:

x=-8

Step-by-step explanation:

$\sqrt{4x+41}=x+5$

on squaring both sides

$4x+41=(x+5)^2\\\\4x+41=x^2+10x+25\\\\x^2+6x-16=0\\\\x^2+8x-2x-16=0\\\\x(x+8)-2(x+8)=0\\\\(x-2)(x+8)=0$

either x-2=0 or x+8=0

either x=2 or x=-8

Putting x=2 in original equation, we get

$\sqrt{4\times 2+41}=2+5$

7=7 hence, it is not an extraneous solution

Putting x=-8 in original equation

$\sqrt{4\times (-8)+41}=-8+5$

i.e. 3=-3

Hence, x=-8 is an extraneous solution (since it doesn't satisfy the original equation)

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3 years ago

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