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3 years ago

What is the system of linear equations

Mathematics

1 answer:

Tamiku [17]3 years ago

5 0

A) y = 2x -4
B) x + 2y = 12
A) -2x + y = -4
A) -x +.5y = -2 then adding to B
B) x + 2y = 12

2.5y = 10
y = 4

x = 4

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PLEASE HELP SUPER EASY!!!

Effectus [21]

A1. 12 i.e option D

A2. 3n-7 i.e option A

A3. -6n+20 i.e option D

A4. -70 i.e option C

Step-by-step explanation:

aₙ = a₁ + (n - 1) × d

aₙ = the nᵗʰ term in the sequence

a₁ = the first term in the sequence

d = the common difference between terms

Using the above formula to solve the first part, we have :

-8 = a₁ + (2-1) × 5

-13 = a₁

a₆ = -13 + (6-1) × 5

a₆ = 12

For the second part, we have :

aₙ = -4 + (n-1)×3

aₙ = -4 + 3n -3

aₙ = 3n-7

For the third part, we have :

a₁=14 ; d=-6

aₙ = 14 + (n-1)×(-6)

aₙ = -6n + 20

For the fourth part, we have :

aₙ = 14 + (15-1)×(-6)

aₙ = -70

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3 years ago

Greatest common factor of 4 and 19?

Llana [10]

Answer:

The greatest common factor of 4 and 19 is 1

Step-by-step explanation:

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Landry's neighbor pledged $5.00 for every 2 miles he swims in a charity swim-a-thon. If Landry swims 3 miles how much money will

SVETLANKA909090 [29]

7.50 dollars because per each mile its $2.50 . and $2.50 times 3 equals $7.50

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4 years ago

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If i want to show two lines are parallel what formula do i use?

Elena-2011 [213]

Answer:

Slope formula

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3 years ago

Please help me with this question step by step on how to solve it. It takes the earth 24 h to complete a full rotation. If it wo

pav-90 [236]

In order to find the number of hours it takes to do the full rotation we separate into pieces the days, hours, and minutes and convert each of them separately.

using the conversion factor from days to hours we get that

$1\text{day}=24\text{hours}$

then we get that

$38\text{days}\cdot\frac{24\text{hours}}{1day}=912hours$

hours does not need a conversion factor, meaning that

$10\text{hours}=10\text{hours}$

continue by converting the minutes using the following conversion factor

$1\text{hour}=60\min$

then,

$30\min \cdot\frac{1\text{hour}}{60\min }=0.5\text{hours}$

To complete add all the results together

$\begin{gathered} 912+10+0.5 \\ 922.5\text{hours} \end{gathered}$

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1 year ago