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3 years ago

Please help me with math

Mathematics

2 answers:

fredd [130]3 years ago

8 0

Answer:

1.) Arithmetic. common difference: 4

2.) Arithmetic. common difference: 4

3.) Not arithmetic.

Svet_ta [14]3 years ago

8 0

Answer:

Step-by-step explanation:

The first two have a common difference of 4

2 6 10

To get from 2 to 6 you need to add 4 to the 2.

-7 -3 1

Add 4 to -3 and you get 1. This works.

The last one seems to be playing hop scotch all over the place (hop scotch is not a technical term. It is just by way of saying it's not arithmetic).

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valina [46]

Answer:

$(10, 0)$

Step-by-step explanation:

Let's try all the options:

$\left \{ {{2x + y = 20} \atop {4x-2y = 40} \right.$

Considering $(10, 0)$ :

$$\left \{ {{2(10) + 0 = 20} \atop {4(10)-2(0) = 40} \right. $\\$

$\left \{ {{20 + 0 = 20} \atop {40-0 = 40} \right.$

$\left \{ {{20= 20} \atop {40 = 40} \right.$

Considering $(0, 10)$ :

$$\left \{ {{2(0) + 10 = 20} \atop {4(0)-2(10) = 40} \right. $\\$

$\left \{ {{0 + 10 = 20} \atop {0-20 = 40} \right.$

$\left \{ {{10= 20} \atop {-20 = 40} \right.$

$\left \{ {{10\neq 20} \atop {-20 \neq 40} \right.$

Considering $(4, 2)$ :

$$\left \{ {{2(4) + 2 = 20} \atop {4(4)-2(2) = 40} \right. $\\$

$\left \{ {{8 + 2 = 20} \atop {8-4 = 40} \right.$

$\left \{ {{10= 20} \atop {4 = 40} \right.$

$\left \{ {{10\neq 20} \atop {4 \neq 40} \right.$

Considering $(10, -10)$ :

$$\left \{ {{2(10) -10 = 20} \atop {4(10)-2(-10) = 40} \right. $\\$

$\left \{ {{20 -10 = 20} \atop {40+20 = 40} \right.$

$\left \{ {{10= 20} \atop {60 = 40} \right.$

$\left \{ {{10\neq 20} \atop {60 \neq 40} \right.$

7 0

3 years ago

Ash company report sales of $430,000 for year 1, $480,000 for year 2 and $530000 for year 3. Using year 1 as the base year, what

TiliK225 [7]

Answer:

12% increase

Step-by-step explanation:

Each year the sales increase by $50,000.

430,000 + 50,000 = 480,000

480,000 + 50,000 = 530,000

To find the percent change, write a proportion using 2 of the years.

$\frac{480,000}{430,000}=\frac{x}{100}$

To solve for x, cross multiply the numerator with the denominator of each fraction.

480,000(100) = 430,000(x)

48,000,000 = 430,000x

111.62 = x

Rounded this is 112% or 12% above 100%.

4 0

3 years ago

Solve for x: 24x + 12 = 16

vfiekz [6]

Answer:

x=1/6 or x=0.1666666667

Step-by-step explanation:

5 0

3 years ago

indria, bonnie and chang all work at the same pet store. indria works every other day. bonnie works every fourth day. chang work

Nataly [62]

I'm going to say the eighth

6 0

3 years ago

Express 0.1846 as a mixed number

Vinil7 [7]

Answer: I'm not sure about the mixed number but the fraction is 923/5000

7 0

3 years ago