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Lady bird [3.3K]

3 years ago

11

Mr. Abyad used 3 2/3 square feet of material for his first bulletin board, 6 3/4 square feet of material for his second bulletin

board, and 4 1/3 square feet for his third bulletin board. How many square feet of material did Mr. Abyad use?

2 answers:

mylen [45]3 years ago

6 0

I hope this helps you

Stels [109]3 years ago

5 0

Mr. Abyad used 14 3/4 square feet of material

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What is vaule of y when x=4'5

Degger [83]

Answer:

$y = 2.096$ or $y = \frac{2\sqrt5+6}{5}}$

Step-by-step explanation:

Given

$y = \frac{4}{x} + \sqrt x + 0.2 - 5x$

$x = \frac{4}{5}$

Required

Find y

$y = \frac{4}{x} + \sqrt x + 0.2 - 5x$

Substitute $x = \frac{4}{5}$

$y = \frac{4}{4/5} + \sqrt{4/5} + 0.2 - 5 * 4/5$

$y = 5 + \sqrt{4/5} + 0.2 - 4$

Collect like terms

$y = \sqrt{4/5} + 5 + 0.2 - 4$

$y = \sqrt{\frac{4}{5}} + 1.2$

Split the surd

$y = \frac{\sqrt4}{\sqrt5}} + 1.2$

$y = \frac{2}{\sqrt5}} + 1.2$

Rationalize

$y = \frac{2\sqrt5}{\sqrt5*\sqrt5}} + 1.2$

$y = \frac{2\sqrt5}{5}} + 1.2$

Take LCM and add

$y = \frac{2\sqrt5+1.2*5}{5}}$

$y = \frac{2\sqrt5+6}{5}}$

or solve as:

$y = \frac{2*2.24+6}{5}}$

$y = \frac{10.48}{5}$

$y = 2.096$

7 0

3 years ago

The second term is 5 the fourth term is 12 and the seventh term is 22. 5 what is the first term?

Naddik [55]

Answer:

3.5

Step-by-step explanation:

each jump will increase 3.5

order: 2 3 4 5 6 7

num: 5 8.5 12 15.8 19 22.5

7 0

2 years ago

What is the first step in solving the following equation

Naily [24]

Answer:

The first step in solving the equation is "set each binomial factor equal to zero" ⇒ 3

Step-by-step explanation:

To solve a quadratic equation y = ax² + bx + c

Put y = 0
Factorize it into two binomial factors (x ± m)(x ± n)
Equate each binomial factor by 0 to find the values of x
The values of x are the solution of the equation

∵ The equation is (x + 2)(x - 3) = 0

∵ The equation equated by 0

∵ It is factored into 2 binomial factors (x + 2) and (x - 3)

- The next step is equated each factor by 0 to find the values of x

∴ The 1st step in solving (x + 2)(x - 3) = 0 is set x + 2 = 0 and

x - 3 = 0

The first step in solving the equation is "set each binomial factor equal to zero"

8 0

3 years ago

The radius of the Earth is approximately 3,960 miles. Find the approximate surface-area-to-volume ratio of the Earth.

Jobisdone [24]

To put it another way, that ratio exists, no matter what distance units you use to express lengths, such as the radius of the Earth, but using different units will result in a different numerical part.
<span>You can't, for instance, say the the radius of the Earth is 3960, and leave it at that. </span>
<span>If someone comes along who's measuring everything in km, he'll tell you that it's 6373. </span>
<span>Or if he's using meters, he'll say it's 6,373,000. </span>
<span>Or in yards, 6,969,600. </span>

<span>So r = 3960 mi </span>
<span>And as others have said, the area, A, and volume, V, of a sphere, in terms of its radius, are </span>
<span>A = 4πr² </span>
<span>V = 4πr³/3 </span>
<span>so that the area to volume ratio is </span>
<span>A/V = 3/r </span>

<span>So the answer is </span>
<span>3/(3960 mi) = (1/1320) /mi. </span>

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3 years ago

Which pair of transformations will NOT preserve the size and the shape of the figure?

wel

There isn’t a picture so we can see

8 0

3 years ago