I’ll give the brainlest answer! Is this relation a function? Please help

Please help!

Ivenika [448]

SOLUTION TO QUESTION 1

For $v-6\ge4$

We add $6$ to both sides of the inequality. This gives us

$v-6+6\ge4+6$

We simplify to obtain;

$v+0\ge10$

Hence,

$v\ge 10$

See the attachment for graph.

SOLUTION TO QUESTION 2

For the inequality $-5x$

We divide both sides by $-5$ and reverse the inequality sign because, we are dividing by a negative number. This implies that;

$\frac{-5x}{-5}> \frac{15}{-5}$

We simplify to get,

$x>-3$

See attachment for graph

SOLUTION TO QUESTION 3

For $3k>5k+12$

We group the terms in $k$ on the left hand side of the inequality,

$3k-5k>12$

We simplify to obtain;

$-2k>12$

We divide both sides by $-2$ and reverse the inequality sign because, we are dividing by a negative number again. This implies that;

$\frac{-2k}{-2}$

This simplifies to;

$k$

See attachment for graph.

SOLUTION TO QUESTION 4

Given the set {5,10,15}

All the possible subsets are;

{}, {5}, {10}, {15}, {5,10}, {5,15}, {10,15}, and {5,10,15}

SOLUTION TO QUESTION 5

For $2t\le-4 \: or\:7t\ge 49$

We divide through the first inequality by 2 and the second inequality by 7 to obtain;

$t\le-2 \: or\: t\ge 7$

Or

$t\le-2 , t\ge 7$

SOLUTION TO QUESTION 6

We have $|n+2|=4$

This implies that;

$(n+2)=4$ or $-(n+2)=4$

This implies that;

$n+2=4$ or $n+2=-4$

This simplifies to;

$n=4-2$ or $n=-4-2$

$n=2$ or $n=--6$

SOLUTION TO QUESTION 7

We have $|2x-7|>1$

This implies that;

$2x-7>1$ or $-(2x-7)>1$

We divide the second inequality by negative 1 and reverse the inequality sign.

$2x-7>1$ or $2x-7$

We group like terms to get,

$2x>1+7$ or $2x$

$2x>8$ or $2x$

We divide both inequalities by 2 to obtain;

$x>4$ or $x$

SOLUTION TO QUESTION 8

Given A={1,2,3,4,5,6,7,8,9}

and

B={2.4,6,8}

The union of A and B, are the elements in set A or set B or both.

$A \cup B$ ={1,2,3,4,5,6,7,8,9}

SOLUTION TO QUESTION 9

Given:

P={1,5,7,9,13}

R={1,2,3,4,5,6,7}

and

Q={1,3,5}

We apply our understanding of subsets to draw the Venn diagram.

See attachment for the Venn Diagram.

3 0

4 years ago

Explain why two variables must both be quantitative in order to find the correlation between them

Butoxors [25]

If the variables are not quantitative we cannot do the arithmetic required in the formulas for r.

<h3>What is a variable?</h3>

A variable in mathematics is a symbol and placeholder for a changing quantity or any mathematical object.
A variable can specifically represent a number, a vector, a matrix, a function, a function's argument, a set, or an element of a set.

Quantitative order:

Quantitative methods emphasize objective measurements and statistical, mathematical, or numerical analysis of data gathered through polls, questionnaires, and surveys, as well as by manipulating pre-existing statistical data using computational techniques.
Ordinal-level measurement data can be quantitative or qualitative.
They can be arranged in ranked order, but differences between entries are meaningless.
Measurement data at the interval level are quantitative.
They can be arranged in any order, and meaningful differences between data entries can be calculated.
We can't do the arithmetic required in the r formulas if the variables aren't quantitative.

Therefore, if the variables are not quantitative we cannot do the arithmetic required in the formulas for r.

Know more about quantitative data here:

brainly.com/question/24492737

#SPJ4

4 0

2 years ago

NEED ANSWER ASAP!!! Express your answer in scientific notation. 9.3 X 107 - 3.14 X 106

kirza4 [7]

Answer:

$89.86\times 10^6$