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Reptile [31]
3 years ago
15

PLEASE ANSWER THIS QUESTION!! 30 POINTS AND BRAINLIEST !!

Mathematics
2 answers:
Anton [14]3 years ago
7 0

Answer:

a) 2,400 pieces

Step-by-step explanation:

Firstly, remember that there 2 half inches in an inch. If 100 pieces of sheet music are 0.5 inches tall, then 200 pieces are 1 inch tall.

Next, remember that in every foot there are 12 inches. We can multiply the number of pages of sheet music that is 1 inch tall to find how many would be 1 ft tall.

200 * 12

= 2,400 pieces

Hope this helps! Please feel free to send any questions my way :)

Oksanka [162]3 years ago
4 0

Answer:

a

Step-by-step explanation:

there are 24 half inches in 1 foot. As there is 100 papers per half inch, there is 24*100=2400 papers in all

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Evaluate UV if possible.
Mnenie [13.5K]

Answer: B

Step-by-step explanation:

Multiply U and V:

\begin{pmatrix}-9&1&0\\ \:4&0&2\\ \:0&1&5\end{pmatrix}\begin{pmatrix}2\\ \:-2\\ \:1\end{pmatrix}

\mathrm{Multiply \ the \ rows \ of \ the \ first \ matrix \ by \ the \ columns  \ of \ the \ second \ matrix:}

\begin{aligned}&\left(\begin{array}{ccc}-9 & 1 & 0\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=(-9) \cdot 2+1 \cdot(-2)+0 \cdot 1 \\&\left(\begin{array}{ccc}4 & 0 & 2\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=4 \cdot 2+0 \cdot(-2)+2 \cdot 1 \\&\left(\begin{array}{lll}0 & 1 & 5\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=0 \cdot 2+1 \cdot(-2)+5 \cdot 1\end{aligned}

=\begin{pmatrix}\left(-9\right)\cdot \:2+1\cdot \left(-2\right)+0\cdot \:1\\ 4\cdot \:2+0\cdot \left(-2\right)+2\cdot \:1\\ 0\cdot \:2+1\cdot \left(-2\right)+5\cdot \:1\end{pmatrix}

\mathrm{Simplify\:each\:part:}

=\begin{pmatrix}-20\\ 10\\ 3\end{pmatrix}

Therefore, the correct answer is B

5 0
3 years ago
What is the range?<br> 5 7 10 7 3 10 9 1 1 6
fenix001 [56]

Answer:

9

Step-by-step explanation:

10-1=9 thats how you find the range you do the highest number then the lowest number after that you subtract it

4 0
3 years ago
Read 2 more answers
Determine whether the situation calls for a survey, an observational study, or an experiment.
Elis [28]

Answer:

b. observational study

Explanation:

Observational studies are <em>commonly used in order to know the effects of a treatment or drug. </em>This study recruits people (the population of interest) to participate and these people are then interviewed and observed on a face-to-face visit. This allows clinical investigation regarding the safety of the new medication, including its <u>side effects and adverse effects.</u> So, this allows the researcher to know the symptoms of the new drug including whether it can reduce migraine to people.

The study also allows the employment of different designs, thereby paving way to a better patient care.

4 0
3 years ago
A triangle has a perimeter of 32 inches. The medium side is 7 more than the short side, and the longest side is 3
pshichka [43]
It has 3 sides I don’t know what other answers there is
7 0
3 years ago
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Consider the following equation
sp2606 [1]

Answer:

The negative solution is between -3 and -2

The positive solution is between 11 and 13

Step-by-step explanation:

we have

0=x^{2} -10x-27

The formula to solve a quadratic equation of the form ax^{2} +bx+c=0 is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2} -10x-27=0  

so

a=1\\b=-10\\c=-27

substitute in the formula

x=\frac{10(+/-)\sqrt{-10^{2}-4(1)(-27)}} {2(1)}

x=\frac{10(+/-)\sqrt{208}} {2}

x=\frac{10(+)\sqrt{208}} {2}=12.21

x=\frac{10(-)\sqrt{208}} {2}=-2.21

therefore

The negative solution is between -3 and -2

The positive solution is between 11 and 13

5 0
4 years ago
Read 2 more answers
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