All categories

3 years ago

Two column proof 2n-21=n/4

Mathematics

1 answer:

natita [175]3 years ago

4 0

Simplifying:

2n-21=0.25n

We move all terms containing n to the left and all other terms to the right.

+2n-0.25n=+21

We simplify left and right side of the equation.

+1.75n=+21

We divide both sides of the equation by 1.75 to get n.

n=12

You might be interested in

Please Help me on question 1 :))

levacccp [35]

9514 1404 393

Answer:

-2

Step-by-step explanation:

The solution to the system is where the lines cross. The x-coordinate of that point is its horizontal distance from the y-axis.

The solution is (x, y) = (-2, 2). The x-coordinate is -2.

5 0

3 years ago

(9.r + 1) (11x - 23), Help me please

12345 [234]

Answer

X= 8 i answered it as fast as possible

6 0

4 years ago

What is the area shaded in the region?

solong [7]

Answer:

Option C

The Area Of Shaded Region is 50.2 cm²

Step-by-step explanation:

For A given Circle,

For Small (Non-Shaded) Circle:

Diameter (d) = 6 cm

Radius = d ÷ 2 = 6/2 = 3 cm

For Area of Small (Non-Shaded) Circle

<h3>Formula:</h3>

A = πr²

A = 3.14 × (3)² cm

A = 3.14 × 9 cm

A = 28.26 cm²

For Area of Big (Shaded) Circle:

Diameter (d) = 10 cm

Radius = d ÷ 2 = 10/2 = 5 cm

For Area of Small (Non-Shaded) Circle

<h3>Formula:</h3>

A = πr²

A = 3.14 × (5)² cm

A = 3.14 × 25 cm

A = 78.5 cm²

For The Area Of Shaded Region

Area of Big Circle - Area of Small Circle

78.5 cm² - 28.26 cm² = 50.24 cm²

Thus, The Area Of Shaded Region is

50.2 cm²

-TheUnknownScientist

4 0

3 years ago

Read 2 more answers

The washing machine had a selling price of P4,792. It had been marked up by P1,248. What was the cost? What was the mark-up rate

LUCKY_DIMON [66]

Answer:

The cost of the washing machine is P 3,544

The mark-up rate is 35.21%

Step-by-step explanation:

1. We want to calculate the cost

Mathematically, this is the difference between the selling price and the mark up

We have this as;

4,792 - 1,248 = P 3,544

2. Here, we want to calculate the mark-up rate

Mathematically, this is the percentage of mark-up

That is;

mark-up/cost price * 100%

: 1,248/3,544 * 100% = 35.21%

5 0

3 years ago

Round 218 to the nearest hundred

Sergio [31]

When rounding to the nearest hundred, if the number in the tens place is less than 5, you should round downwards (keep the same number shown in the hundreds place). However, if the number in the tens place is 5 or greater, than you have to round up, which means adding one to the number currently in the hundreds place. So, for this problem, the digit 1 is in the tens place. Because 1 is less than 5, we know that we have to round down. Thus, 218 rounded to the nearest hundred is 200. Hope this helps!!

7 0

3 years ago