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4 years ago

The area of the rectangle shown is 54 square units. What is its perimeter

Mathematics

1 answer:

Ipatiy [6.2K]4 years ago

6 0

Answer:

perimeter of a square= 4 times square root of area

$4 \sqrt{54} = 29.39$

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Can someone answer this

Lunna [17]

Answer:

$m = \boxed{1} \: \: c = \boxed{4}$

Step-by-step explanation:

$y = x + 4 \\ equating \: it \: with \\ y = mx + c \\ m = \boxed{1} \: \: c = \boxed{4}$

8 0

3 years ago

Which equation is y = 9x2 + 9x – 1 rewritten in vertex form?

Anastasy [175]

Answer:

$y = 9(x +\frac{1}{2}) ^ 2 -\frac{13}{4}$

Step-by-step explanation:

An equation in the vertex form is written as

$y = a (x-h) + k$

Where the point (h, k) is the vertex of the equation.

For an equation in the form $ax ^ 2 + bx + c$ the x coordinate of the vertex is defined as

$x = -\frac{b}{2a}$

In this case we have the equation $y = 9x^2 + 9x - 1$ .

Where

$a = 9\\\\b = 9\\\\c = -1$

Then the x coordinate of the vertex is:

$x = -\frac{9}{2(9)}\\\\x = -\frac{9}{18}\\\\x = -\frac{1}{2}$

The y coordinate of the vertex is replacing the value of $x = -\frac{1}{2}$ in the function

$y = 9 (-0.5) ^ 2 + 9 (-0.5) -1\\\\y = -\frac{13}{4}$

Then the vertex is:

$(-\frac{1}{2}, -\frac{13}{4})$

Therefore The encuacion excrita in the form of vertice is:

$y = a(x +\frac{1}{2}) ^ 2 -\frac{13}{4}$

To find the coefficient a we substitute a point that belongs to the function $y = 9x^2 + 9x - 1$

The point (0, -1) belongs to the function. Thus.

$-1 = a(0 + \frac{1}{2}) ^ 2 -\frac{13}{4}$

$-1 = a(\frac{1}{4}) -\frac{13}{4}\\\\a = \frac{-1 +\frac{13}{4}}{\frac{1}{4}}\\\\a = 9$

<em>Then the written function in the form of vertice is</em>

$y = 9(x +\frac{1}{2}) ^ 2 -\frac{13}{4}$

7 0

3 years ago

If one feather weighs 700 milligrams, how much will 37 identical feathers weigh plus the basket they are placed in which weighs

hjlf

Answer: 25,900 milligrams, but if the basket is included it would be 74,900 milligrams.

Hope this helps;)

4 0

3 years ago

Help plz!! 3/4=1/8+v

sasho [114]

V is going to equal 5/8

8 0

3 years ago

Calculate the 95% confidence interval for the slope. o (-0.327, 0.00) o (-0.305,-0.022) o (-0.308,-0.019) o (-0.322,0.021)

d1i1m1o1n [39]

The 95% confidence interval for the slope will be B. (-0.308,-0.019).

<h3>How to calculate the interval?</h3>

The confidence interval based on the information and diagram will be:

= -0.1636 + 2.228 × 0.06488

= 0.019

Also, -0.1636 - 2.228 × 0.06488

= -0.308

In conclusion, the correct option is (-0.308,-0.019).

Learn more about confidence interval on:

brainly.com/question/15712887

#SPJ1

7 0

2 years ago