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2 years ago

I write the answer down I just need you to work it out for me please and thank you

Mathematics

1 answer:

mart [117]2 years ago

4 0

Given that:

Height of the trapezoid, h = 24 in.

Bases are a = 48 in, b = 60 in.

Find the area of the trapezoid.

$\begin{gathered} A=\frac{48+60}{2}\cdot24 \\ =54\cdot24 \\ =1296 \end{gathered}$

Number of tiles needed

$\begin{gathered} =\frac{1296}{16} \\ =81 \end{gathered}$

So, 81 number of tiles needed to create the trapezoidal hearth.

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Recall the equation for a circle with center ( h , k ) and radius r . At what point in the first quadrant does the line with equ

butalik [34]

Answer: The required point = (1.857,8.643)

Step-by-step explanation:

Equation of circle with center (h,k) and radius r: $(x-h)^2+(y-k)^2=r^2$

Given: Radius = 5 , center = (0,4)

Eqation of circle: $(x-0)^2+(y-4)^2=5^2$

$x^2+(y-4)^2=25$

$x^2+(2.5x+4-4)^2=25$ [Using equation y = 2.5 x + 4 ]

$x^2+(2.5x)^2=25$

$x^2+6.25x^2=25$

$7.25x^2=25$

$x^2=3.44827586207$

$x=1.857$

$y= 2.5(1.857)+4$

$=8.6425$

Hence, the required point = (1.857,8.643)

7 0

4 years ago

I have 8 pieces of bacon, the cost per unit is $0.35 , what is the total cost?

valentinak56 [21]

Answer:

$2.80

Step-by-step explanation:

8x0.35=$2.80

5 0

4 years ago

analyze this situation and determine how much cookie dough is "wasted" when 3-inch cookies are cut. then have each team member c

Cerrena [4.2K]

Answer:

The result is the same.

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.

Please have a look at the attached photo.

My answer:

Given the information:

square 12 inches wide
3-inch diameter cookies are cut => its radius is: 1.5 inches

Hence we can find some information:

The area of the square is: $12^{2} = 144$ square inches
The area of a cookies is: $r^{2}$ π = 3.14* $1.5^{2}$ = 7.065 square inches
The total number of 3-inch cookies are: 4*4 =16

=> The total area of the cookies is: 16* 7.065 = 113.04 square inches

=> how much cookie dough is "wasted" when 3-inch cookies are cut:

= The area of the square - The total area of the cookies

= 144 - 113.04 = 30.96 square inches

If the diameter is increased to 4 inches => its radius: 2 inches, we have:

The area of a cookies is: $r^{2}$ π = $2^{2} *3.14 = 12.56$ square inches
The total number of 3-inch cookies are: 3*3 =9

=> The total area of the cookies is: 9* 12.56 = 113.04 square inches

=> how much cookie dough is "wasted" when 4-inch cookies are cut:

= The area of the square - The total area of the cookies

= 144 - 113.04 = 30.96 square inches

The result is the same.

8 0

3 years ago

Suppose your professor reports that across all of her classes over the past 10 years, she found a -0.63 correlation between numb

Aleonysh [2.5K]

Using correlation coefficients, it is found that the -0.63 correlation between number of absences and final exam score means that there is a strong negative correlation between number of absences and final exam score.

<h3>What is a correlation coefficient?</h3>

It is an index that measures correlation between two variables, assuming values between -1 and 1.

If it is positive, the relation is positive, that is, they are direct proportional. If it is negative, they are inverse proportional.

If the absolute value of the correlation coefficient is greater than 0.6, the relationship is strong.

In this problem, the correlation is of -0.63, hence:

It means that that there is a strong negative correlation between number of absences and final exam score.

To learn more about correlation coefficients, you can take a look at brainly.com/question/25815006

4 0

2 years ago

What decimal best represents 1/4

patriot [66]

Answer:1/4 = 0.25

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers