3 years ago

Need help with perimeter problems :(

Mathematics

2 answers:

schepotkina [342]3 years ago

5 0

The answer will be 380ft. no square feet because they aren't finding the area

coldgirl [10]3 years ago

4 0

100x120 is how you get the answer

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Find the equation of the axis of symmetry of the following parabola algebraically.

mr Goodwill [35]

Answer:

the equation of the axis of symmetry is $x=8$

Step-by-step explanation:

Recall that the equation of the axis of symmetry for a parabola with vertical branches like this one, is an equation of a vertical line that passes through the very vertex of the parabola and divides it into its two symmetric branches. Such vertical line would have therefore an expression of the form: $x=constant$ , being that constant the very x-coordinate of the vertex.

So we use for that the fact that the x position of the vertex of a parabola of the general form: $y=ax^2+bx+c$ , is given by:

$x_{vertex}=\frac{-b}{2\,a}$

which in our case becomes:

$x_{vertex}=\frac{-b}{2\,a} \\x_{vertex}=\frac{48}{2\,(3)} \\x_{vertex}=\frac{48}{6} \\x_{vertex}=8$

Then, the equation of the axis of symmetry for this parabola is:

$x=8$

4 0

3 years ago

A store discounts the price of a beanbag chair by 20%. The price of the beanbag chair is marked as $16. What was the original pr

Dahasolnce [82]

Use this to solve:

4/5 = 16/x

Since these are equivalent fractions;

you can divide 16 by 4

then multiply by 5

that should give you the original price of the bean bag chair!

3 0

3 years ago

THIS IS THE QUESTION TO THE BACK PAGE! PLS HELP ME ASAP

Alex

There are some errors in your table. Column 1, for example, should be all odd numbers. Columns should alternate even/odd.

It can be useful to build a spreadsheet that fills these numbers.

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3 years ago

A 16 ounce bag of cereal cost $2.88 what is the cost per ounce

BabaBlast [244]

Answer: 0.18 (18 cents) per ounce

Step-by-step explanation:

2.88/16 = 0.18

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3 years ago

The formula for the area of a circle is A=pir^2. Find the area of a circle with a diameter of 6.4 centimeters. Use a calculator

Advocard [28]

A=pi(3.2)^2= 32.1699087728
A=32cm^2

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3 years ago