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elena55 [62]
3 years ago
14

After the math contest, Basil noticed that there were four extra-

Mathematics
2 answers:
Hitman42 [59]3 years ago
7 0

Answer:

An extra large pizza has 12 slices

Vlad1618 [11]3 years ago
3 0

Answer:

correct answer = 12

Step-by-step explanation:

the extra large pizza contains = 12 slices of pizza.

<em>plz </em><em>mark</em><em> my</em><em> answer</em><em> as</em><em> brainlist</em><em> plzzzz</em><em>.</em>

<em>hope</em><em> this</em><em> will</em><em> be</em><em> helpful</em><em> to</em><em> </em>you ☺️

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Solve for d.
Hoochie [10]

Answer:

-8 = d

Step-by-step explanation:

-10 = -2+d

Add 2 to each side

-10 +2 = -2+2 +d

-8 = d

8 0
3 years ago
a girl is snorkeling 1 meter below sea level and then dives down another 0.5 meter. How far below sea level is the girl?
zalisa [80]
The answer is 1.5 meter depth. 
6 0
3 years ago
An office needs 300 envelopes. If there are 30 envelopes in each box, how many boxes should the office buy?
Mila [183]

Answer:

they should buy 10 boxes

Step-by-step explanation:

300/30 = 10

7 0
2 years ago
Read 2 more answers
I surveyed students in my Math II classes to see how many hours of television they watched the night before our big test on tria
Oduvanchick [21]
Given the table below representing the number of hours of television nine Math II class students watched the night before a big test on triangles along with the grades they each earned on that test.

\begin{center}&#10;\begin{tabular}&#10;{|c|c|}&#10;Hours Spent Watching TV & Grade on Test (out of 100)  \\ [1ex]&#10;4 & 71 \\ &#10;2 & 81 \\ &#10;4 & 62 \\ &#10;1 & 86 \\ &#10;3 & 77 \\ &#10;1 & 93 \\ &#10;2 & 84 \\ &#10;3 & 80 \\ &#10;2 & 85&#10;\end{tabular}&#10;\end{center}

Let the number the number of hours of television each of the students watched the night before the test be x while the grades they each earned on that test be y.

We use the following table to find the equation of the line of best fit of the regression analysis of the data.

\begin{center} \begin{tabular} {|c|c|c|c|} x & y & x^2 & xy \\ [1ex] 4 & 71 & 16 & 284 \\ 2 & 81 & 4 & 162 \\ 4 & 62 & 16 & 248 \\ 1 & 86 & 1 & 86 \\ 3 & 77 & 9 & 231 \\ 1 & 93 & 1 & 93 \\ 2 & 84 & 4 & 168 \\ 3 & 80 & 9 & 240 \\ 2 & 85 & 4 & 170 \\ [1ex]\Sigma x=22 & \Sigma y=719 & \Sigma x^2=64 & \Sigma xy=1,682 \end{tabular} \end{center}

Recall that the equation of the line of best fit of a regression analysis is given by
y=a+bx
where:
a= \frac{(\Sigma y)(\Sigma x^2)-(\Sigma x)(\Sigma xy)}{n(\Sigma x^2)-(\Sigma x)^2}
and
b= \frac{n(\Sigma xy)-(\Sigma x)(\Sigma y)}{n(\Sigma x^2)-(\Sigma x)^2}

y=\frac{(719)(64)-(22)(1,682)}{9(64)-(22)^2}+\frac{9(1,682)-(22)(719)}{9(64)-(22)^2}x \\  \\ = \frac{46,016-37,004}{576-484} + \frac{15,138-15,818}{576-484} x \\  \\ = \frac{9,012}{92} + \frac{-680}{92} x \\  \\ =97.95-7.391x

Thus, the equation of the line of best fit is given by y = 97.95 - 7.391x

<span>A student that watched 1.5 hours of TV will have a score given by
y = 97.95 - 7.391(1.5) = 97.95 - 11.0865 = 86.8635

Therefore, </span><span>a student’s score if he/she watched 1.5 hours of TV to the nearest whole number is 87.</span>
6 0
3 years ago
 tell me how to answer this please I WILL MARK BRAINLIEST
iogann1982 [59]

Answer:

It equals 3

Step-by-step explanation:

To solve this it is basically like a normal problem you would just take out the X in it and divide 7 by 21 which leaves you with 3.

7 0
2 years ago
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