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3 years ago

Number (C) what’s the equation?

Mathematics

2 answers:

Fynjy0 [20]3 years ago

6 0

Answer:

y = 2/3x - 2.

Step-by-step explanation:

Check to see if its a straight line graph'

The slope = (2-0)/ 6-3) = 2/3.

(0--2)/ 3-0) = 2/3

(2 - -6) / 6 - -6) = 8/12 = 2/3

So it looks like a straight line.

So we can write it as

y = 2/3 x + c

When x = 3, y = 0

0 = 2/3 * 3 + c

c = 0 - 2 = -2

The equation is y = 2/3x - 2.

nataly862011 [7]3 years ago

3 0

Answer:

$y=\frac{2}{3} x-2$

Step-by-step explanation:

use substitution method

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Please help!!! How many coefficients does this polynomial have in its complete form, including any missing terms?

frez [133]

-5x^3 + 2x^2 + 1

a coefficient is the number that is multiplied by the variable.For instance, the coefficient of 2x is 2....because 2 (the number) is multiplied by the variable x.

so in ur problem....there are 2 coefficients..-5 and 2.

** the number 1 is not a coefficient, it is a constant...a " loner " with no variables (letters) attached.

** and if u have just the letter...such as n, the coefficient to that is 1 but the one is just not written...it is actually 1n.

okay...I am gonna shut up now :)

7 0

2 years ago

What is the value of y in the sequence below? 2,y,18, -54,162,

snow_lady [41]

First, let's check if the sequence is geometric or arithmetric.

If arithmetric, the sequence will have common difference.

Arithmetric

$\displaystyle \large{a_{n + 1} - a_n = d}$

d stands for a common difference. Common Difference means that sequences must have same difference after subtracting.

Geometric

$\displaystyle \large{ \frac{a_{n + 1}}{a_n} = r}$

r stands for a common ratio.

To find the value of y, you can check the sequence. If we try subtracting the sequences, the differences are different. That means the sequences are not arithmetric. That only leaves the geometric sequence.

Let's check by dividing sequences.

We have:

2,y,18,-54,162,...

Let's check by divide -54 by 18 and 162 by -54. We need to divide more than one so we can prove that the sequence is geometric.

$\displaystyle \large{ \frac{ - 54}{18} = - 3 } \\ \displaystyle \large{ \frac{ 162}{ - 54} = - 3}$

Hence, the sequence is geometric.

Because the common ratio is -3. Let these be the following:

$\displaystyle \large{ a_{n + 1} = y } \\ \displaystyle \large{ a_n = 2 } \\ \displaystyle \large{ r = - 3 }$

From the:

$\displaystyle \large{ \frac{a_{n + 1}}{a_n} = r}$

Substitute the values in.

$\displaystyle \large{ \frac{y}{2} = - 3}$

Multiply the whole equation by 2 to isolate y.

$\displaystyle \large{ \frac{y}{2} \times 2 = - 3 \times 2} \\ \displaystyle \large{ y = - 6}$

Therefore, the value of y is -6.

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2 years ago

A bear cub walks

Jobisdone [24]

Answer:use math(way

Step-by-step explanation

It help

8 0

2 years ago

Read 2 more answers

Gwen studies for 1.5 hours every night. What is the total number of hours Gwen studies for 5 nights

Darina [25.2K]

1 and 1/2 hours each night
1+1+1+1+1= 5
1/2+1/2+1/2+1/2+1/2= 2.5
5+2.5= 7.5
7.5 hours or & and a half
hope this helps
~L

6 0

2 years ago

What is the fraction -2 over 3 multiplied by -2 equal?

defon

-2/3 times -2. You change -2 into -2/1 so you can multiply numerator to numerator and denominator to denominator. You will get 4/3 (negatives cancel out)

3 0

2 years ago