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3 years ago

25 points! I don't need an answer, just an explanation of how to do it. 1-(-3)

Mathematics

2 answers:

user100 [1]3 years ago

4 0

Step-by-step explanation:

When you are subtracting a negative number from a positive number, the negative - sign will always turn into a positive + sign.

So in this case, you would cancel out the negative - signs and put in a positive + sign: 1-(-3) --> 1+3

anyanavicka [17]3 years ago

4 0

Answer:

When you are subtracting a negative number from a positive number, the negative - sign will always turn into a positive + sign.

So in this case, you would cancel out the negative - signs and put in a positive + sign: 1-(-3) --> 1+3

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Consider the three scatterplots labeled I, II, and III. Which set of data shows the greatest correlation coefficient?

lyudmila [28]

Answer:

D) All three have the same correlation coefficient.

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4 years ago

Ap:3, 2, 1....<br>what is its coomon difference

Nastasia [14]

Answer:

-1

Step-by-step explanation:

3-1=2

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2 years ago

Which of the following matrices is the solution matrix for the given system of equations? x + 5y = 11 x - y = 5

givi [52]

<h2>The required solution is x = 6 and y = 11 </h2>

Step-by-step explanation:

Given system of equations are

x+5y = 11 and x-y =5

$A= \left[\begin{array}{cc}1&5\\1&-1\end{array}\right]$ $X=\left[\begin{array}{c}x\\y\end{array}\right]$

and $B= \left[\begin{array}{c}11\\5\end{array}\right]$

∴AX=B

$adj A = \left[\begin{array}{cc}{-1}&{-5}\\{-1}&1\end{array}\right]$

$A= \left|\begin{array}{cc}1&5\\1&-1\end{array}\right|=-6$

∴ $A^{-1} =\frac{adj A}{|A|}$

So, $A^{-1} =\frac{ \left[\begin{array}{cc}{-1}&{-5}\\{-1}&1\end{array}\right]}{-6}$

$A^{-1} ={ \left[\begin{array}{c \c} {{\frac{1}{6} }}&{\frac{5}{6}}\ \\ {{\frac{1}{6} }}&{\frac{-1}{6}} \end{array}\right]}$

$X =A^{-1}\times B$

⇒ $\left[\begin{array}{c}x\\y\end{array}\right] ={ \left[\begin{array}{c \c} {{\frac{1}{6} }}&{\frac{5}{6}}\ \\ {{\frac{1}{6} }}&{\frac{-1}{6}} \end{array}\right]} \times \left[\begin{array}{c}11\\5\end{array}\right]$

⇒ $\left[\begin{array}{c}x\\y\end{array}\right] ={ \left[\begin{array}{c} {6}\\ {11} \end{array}\right]}$

∴ x= 6 and y = 11

The required solution is x = 6 and y = 11

7 0

3 years ago

Compute 33(0.5) - 6(0.5) - 7/2.

lora16 [44]

Hi there! The answer is 10.

$33(0.5) - 6(0.5) - \frac{7}{2}$
We can use PEMDAS (Parenthesis, exponents, multiply, divide, add, subtract) to find our answer.

Since we cannot work inside the parenthesis in this question and since we don't have exponents, we can move on to multiplying.
$16.5 - 3 - \frac{7}{2}$

Our next step would be subtracting. To make the process of subtracting some easier, I'll first change the fraction into a decimal.
$16.5 - 3 - 3.5$

Finally subtract.
$13.5 - 3.5 = 10$

The answer is 10.
~ Hope this helps you!

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3 years ago

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(This is very confusing)Tania planted five seeds in her garden nadia planted times as many seeds as Tania how many seeds did nad

Fittoniya [83]

There's a number missing from the question. It's supposed to be right before the word "times".
If it were there, the answer would be (5 times that number).
The way the question is written, without that number, there's no answer.

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3 years ago

Read 2 more answers