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Fudgin [204]
4 years ago
7

Xavier needs to find the length and width of his rectangular yard. he knows that the area is 5x^2 -48x-20. what expression would

represent the length and width
Mathematics
1 answer:
tester [92]4 years ago
3 0
Just factor the expression
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Choose the correct Set-builder form for the following set written in Roster form: { − 3 , − 2 , − 1 , 0 , 1 }
ohaa [14]

The correct Set-builder form of the set that is written in Roster form is {x|x is an integer and -3≤x≤1}.

<h3>What is an integer?</h3>

An integer is a number that can be written without using a fractional component. Integers such as 21, 4, 0, and 2048 are examples.

The correct Set-builder form of the set that is written in Roster form can be written as,

{x|x is an integer and -3≤x≤1}

Hence, The correct Set-builder form of the set that is written in Roster form is {x|x is an integer and -3≤x≤1}.

Learn more about Integer:

brainly.com/question/15276410

#SPJ1

4 0
2 years ago
Gribbles are small, pale white, marine worms that bore through wood. While sometimes considered a pest since they can wreck wood
Stells [14]

<u>Answer with explanation:</u>

As per given , we have

A sample of 50 gribbles finds an average length of 3.1 mm with a standard deviation of 0.72.

i.e. n= 50

Degree of freedom = n-1=49

\overline{x}=3.1\ mm

s=0.72\ mm

The point estimate of the population mean is equals to the sample mean.

i.e. The best estimate for the length of gribbles= 3.1 mm

Also, population standard deviation is unknown , then the confidence interval would be :

E=t_{\alpha/2, df}\dfrac{s}{\sqrt{n}}

For df= 49 and significance level of 0.05 , the t- value (using t-distribution table) would be :

t_{0.05/2, 49}=t_{0.025, 49}= 2.010

Now, Margin of error : E=(2.010)\dfrac{0.72}{\sqrt{50}}

=0.204664986747\approx0.20

95% confidence interval : (\overline{x}-E,\ \overline{x}+E)

i.e.\ (3.1-0.20, 3.1+0.20)=(2.90,\ 3.30)

3 0
4 years ago
Which of the following represents the y-intercept of the equation y = 2x - 5 A. 2 B. -5 C. 0 D. 5
lora16 [44]

Hello :)

the y intercept can be found when you use the slope intercept formula

<h2>y = mx +b</h2>

m: slope

b: y-intercept

In the equation given here:

<h2>y = 2x - 5 </h2>

m: 2

b: -5

So, therefore the answer is B. -5

3 0
3 years ago
Use the zero property product to find the solutions to the equation x^2-9= 16
Luba_88 [7]
Subtract 16 to get
  x^2 -25 = 0
Factor this as
  (x -5)(x +5) = 0

The zero product property tells you the product will be zero when one of the factors is zero.

For x-5 = 0
  x = 5

For x+5 = 0
  x = -5

The appropriate choice is
  3) x=-5 or x=5
4 0
3 years ago
(4.8). (-8.16)<br> find the slope of the line through each pair of points.
slamgirl [31]

Answer:

16-8/-8-4 = 8/-16 = 1/-2

5 0
3 years ago
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