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Mars2501 [29]
3 years ago
5

PLZ HELP ME I HAVE 5 MORE MINUTES

Mathematics
2 answers:
bija089 [108]3 years ago
7 0

Answer:

-10

Step-by-step explanation:

-5(2)-4(-1)-8+2(2)=

-10+4-8+4=-10

-×- is +

-×+ is -

rewona [7]3 years ago
5 0

Answer:

-10

Step-by-step explanation:

-5(2) - 4(-1) - 8 +2(2)

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4/32 = x/100
answer: x = 12.5

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The sum of the digits of
liberstina [14]

Answer:

37

Step-by-step explanation:

3 + 7 = 10

73 - 37 = 36

3 0
3 years ago
Which ordered pair is located in Quadrant 11?
nika2105 [10]

Answer:

(-1.2, 5)

Step-by-step explanation:

(-1.2, 5) is in Quadrant II.  Here x = -1.2 (which lies to the left of the y-axis) and 5 lies above the x-axis.

6 0
4 years ago
Read 2 more answers
Inverse this matrix
SIZIF [17.4K]
In order for the inverse to exist, the matrix cannot be singular, so we need to first examine the conditions for existence of the inverse.

Compute the determinant. The easiest way might be a cofactor expansion along either the first row or third column; I'll do the first.

\begin{vmatrix}x&0&0\\0&1&0\\w&0&x\end{vmatrix}=x\begin{vmatrix}1&0\\0&x\end{vmatrix}=x^2

The matrix is then singular whenever x\neq0.

With this in mind, compute the inverse.

\mathbf A=\begin{bmatrix}x&0&0\\0&1&0\\w&0&x\end{bmatrix}\implies\mathbf A^{-1}=\dfrac1{x^2}\begin{bmatrix}a&0&-w\\0&-x^2&0\\0&0&x\end{bmatrix}=\begin{bmatrix}\frac a{x^2}&0&-\frac w{x^2}\\0&-1&0\\0&0&\frac1x\end{bmatrix}
6 0
3 years ago
The waiting time in line at an ice cream shop has a uniform distribution between 3 and 14 minutes. What is the 75th percentile o
lesya692 [45]

Answer:

The 75th percentile of this distribution is 11 .25 minutes.

Step-by-step explanation:

The random variable <em>X</em> is defined as the waiting time in line at an ice cream shop.

The random  variable <em>X </em>follows a Uniform distribution with parameters <em>a</em> = 3 minutes and <em>b</em> = 14 minutes.

The probability density function of <em>X</em> is:

f_{X}(x)=\frac{1}{b-a};\ a

The <em>p</em>th percentile is a data value such that at least p% of the data-set is less than or equal to this data value and at least (100-p)% of the data-set are more than or equal to this data value.

Then the 75th percentile of this distribution is:

P (X < x) = 0.75

\int\limits^{x}_{3} {\frac{1}{14-3}} \, dx=0.75\\\\ \frac{1}{11}\ \cdot\ \int\limits^{x}_{3} {1} \, dx=0.75\\\\\frac{x-3}{11}=0.75\\\\x-3=8.25\\\\x=11.25

Thus, the 75th percentile of this distribution is 11 .25 minutes.

3 0
3 years ago
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