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2 years ago

PLEASE HELP ASAP 50 POINTS PLSSSSSSSSS

Mathematics

2 answers:

LuckyWell [14K]2 years ago

7 0

33 because the fracture of it is equaling that just get a calculator and divide them by the 12 for each one and you we’ll see

explanation:

Andreas93 [3]2 years ago

4 0

Answer:

Step-by-step explanation:

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Colin’s piano lesson is 45 minutes, or 3/4 of an hour, long. If he practices 6 different songs and spends an equal amount of tim

frosja888 [35]

Answer: $\frac{1}{8}$ hour

Step-by-step explanation:

Given: The total time Collin spent on 6 songs = $\frac{3}{4}\text{ hour}$

Now, the fraction of an hour does he spend practicing each song is given by :-

$\frac{\text{Total time taken}}{\text{Total songs}}=\frac{\frac{3}{4}}{6}=\frac{3}{4\times6}=\frac{1}{8}\text{hour}$

The fraction of an hour does he spend practicing each song= $\frac{1}{8}$

5 0

3 years ago

Read 2 more answers

Hello,can you answer this question asap thxs

Ivan

9514 1404 393

Answer:

111 1/9 pounds

Step-by-step explanation:

The given relationship is ...

delivered = ground × (1 -10%)

Then ...

ground = delivered/0.90 = 100 lb/0.90 = 111 1/9 lb

It is necessary to grind 111 1/9 pounds of grain to have exactly 100 lb after a 10% payment.

5 0

2 years ago

A set of n = 25 pairs of scores (x and y values) has a pearson correlation of r = 0.80. how much of the variance for the y score

enot [183]

0.64 or 64% of the variance for the y scores is predicted by its relationship with x.

<h3>What is coefficient of determination?</h3>

The percentage of the variation in the dependent variable that can be predicted from the independent variable is known as the coefficient of determination, abbreviated R2 or r2, in statistics.

<h3>How to find the variance for the y scores?</h3>

given that

A set of n = 25 pairs of scores (x and y values) has a pearson correlation of r = 0.80.

now we have to find the variance for the y scores.

here, r=0.80 then ${r}^{2} = 0.64$

which means 0.64 or 64% of the variance for the y scores is predicted by its relationship with x.

$r = \sqrt{ {r}^{2}} \: or \: \sqrt{ {r}^{2}} \\ 0.80 = \sqrt{ {0.80}^{2} } \\ 0.80 = 0.80$

Learn more about coefficient of determination,refer:

brainly.com/question/17485791

#SPJ9

4 0

1 year ago

4tan^2 x-8tanx+3=0 on interval [0,2pi]

Vadim26 [7]

$\bf 4tan^2(x)+8tan(x)+3=0\qquad [0,2\pi ]
\\\\\\
\textit{since it's just a quadratic, we'll just factor it}
\\\\\\\
[2tan(x)+1][2tan(x)+3]=0\implies 
\begin{cases}
2tan(x)+1=0\\
\qquad tan(x)=-\frac{1}{2}\\
\qquad \measuredangle x=tan^{-1}\left( -\frac{1}{2} \right)\\
\qquad \measuredangle x\approx 333.4^o, 153.4^o\\
2tan(x)+3=0\\
\qquad tan(x)=-\frac{3}{2}\\
\qquad \measuredangle x=tan^{-1}\left(-\frac{3}{2} \right)\\
\qquad \measuredangle x\approx303.7^o, 123.7^o
\end{cases}$

7 0

3 years ago

Of five letters (A, B, C, D, and E), two letters are to be selected at random. How many possible are possible

Vanyuwa [196]

Answer:

Step-by-step explanation:

5C2 =<u>5!</u>

2! (3)!

=<u>1 x 2 x 3 x 4 x 5</u>

(1 x 2) (1 x 2 x 3)

=<u>4 x 5</u>

=<u>20</u>

5C2 = 10

4 0

2 years ago