3 years ago

Which of the following is a function?

Mathematics

1 answer:

mezya [45]3 years ago

6 0

Answer:

Step-by-step explanation:

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Given: x - 6.3333 ≤ 1.5 .

Inessa05 [86]

Answer:

$x$ or $(-\infty, 47/6]$

Step-by-step explanation:

Note that $6.3333 = 6 1/3 = 19/3 = 38/6$ .

Also, note that $1.5 = 1 1/2 = 3/2 = 9/6$ .

So, the inequality is really equal to $x-38/6$ .

We can then add $38/6$ to both sides to get $x$ .

So, the solution is $x$ , or in interval notation, $(-\infty, 47/6]$

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3 years ago

If n lines are drawn in a plane, how many regions do they separate the plane into? induction

grandymaker [24]

Hello,

Let's assume i the number of lines,
u(i) the number of regions:

$u_0=1\\\\
u_1=2=1+1=1+u_0\\\\
u_2=4=2+u_1\\\\
u_3=7=3+u_2\\\\
u_4=11=4+u_3\\\\
u_5=16=5+u_4\\\\
...\\\\
\boxed{u_{n+1}=(n+1)+u_{n}}\\\\

u_{n+1}=(n+1)+n+(n-1)+...+1+u_0\\\\

\boxed{u_{n+1}= \dfrac{(n+1)*(n+2)}{2}+1 }$

6 0

4 years ago

Expand the expression 8(x-7)

Minchanka [31]

Answer:

ig it Will be 8x-56 becoz 8 multiplies x and 7 and we get 8x-56

7 0

3 years ago

Read 2 more answers

What does point p on the number line represent

Yuki888 [10]

Point p on the number line represents, -7

4 0

3 years ago

Read 2 more answers

Evaluate. −8/125−−−−√3<br> A. -4/25<br> B. −2/5<br> C. 4/25<br> D. 2/5

larisa [96]

The correct question is: evaluate

$\sqrt[3]{- \frac{8}{125} }$

The answer is: option B. -2 / 5

Explanation:

$\sqrt[3]{- \frac{8}{125} }=- \frac{ \sqrt[3]{8} }{ \sqrt[3]{125} } =- \frac{ \sqrt[3]{2^3} }{ \sqrt[3]{5^3} } =- \frac{2}{5}$

4 0

4 years ago