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3 years ago

Find the mean and median of these data: 3, 4, 10, 12, 18, 20HURRY HURRY PLS

1 answer:

5 0

Arrange the data in an ascending order and the median is the middle value. If the number of values is an even number, the median will be the average of the two middle numbers.
12

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Solve the equation: 2+3.8w=1.4-2.8w

Novosadov [1.4K]

Answer:

w= -11

Step-by-step explanation:

1. Subtract 2.8 from the right side and add it to the left side. Now you have 2+6.6=1.4.

2. Subtract 2 from the left side and add it to the right side. Now you have 6.6= -.6

3. Divide both sides by -.6. You will get -11=w

7 0

3 years ago

Determine the intercept of the line<br><br> Y-intercept: (___,___)<br> X-intercept: (___,___)

snow_tiger [21]

Answer:

y-inter:(0,-44)

x inter:(-10,0)

5 0

3 years ago

A positive number is 3 times another number.

Juli2301 [7.4K]

Answer:

The smaller number can be 8 or $\frac{1}{5}$ .

Step-by-step explanation:

Consider the provided information.

let the larger number is x and the smaller number is y

A positive number is 3 times another number.

$3y=x$

If we add 2 to the larger and 5 to the smaller, then one of them becomes 2 times the other.

Case I: If 2nd number is 2 times to the first number.

$x+2=2(y+5)$

Substitute the value of x.

$3y+2=2y+10$

$y=8$

Now substitute the value of y in $3y=x$

$3(8)=x$

$x=24$

Therefore, the smaller number is 8.

Case II: If 1st number is 2 times to the second number.

$2(x+2)=y+5$

Substitute the value of x.

$2(3y+2)=y+5$

$6y+4=y+5$

$5y=1$

$y=\frac{1}{5}$

Therefore, the smaller number is $\frac{1}{5}$ .

7 0

3 years ago

What two numbers add up to 45 and multiply and get 121

umka2103 [35]

Let the two numbers be x and y.

We have x+y=45
⇒ y= 45-x.

The two numbers multiply and get 121, so we have another equation:
x*y = 121 (1)

Plug y= 45-x in (1), we have:
x* (45-x)=121
⇒ 45x - x^2 = 121 (distributive property)
⇒ x^2 - 45x = -121 (multiply -1 on both sides)
⇒ x^2- 45x + 121= 0
⇒ x= 42.128 or x= 2.872

y= 45- 42.128= 2.872
or y= 45- 2.872= 42.128.

Because it does not matter what number, x or y, is larger, the two numbers are 2.872 and 42.128.

Hope this helps~

4 0

3 years ago

Writing quadratic equations question 4

Ratling [72]

Answer:

a²+b²=c²; (1.0)²+(5.0)²=x²

Step-by-step explanation:

(1.0×1.0)+(5.0×5.0)=(x×x)

5 0

3 years ago

Find the mean and median of these data: 3, 4, 10, 12, 18, 20HURRY HURRY PLS​

Find the mean and median of these data: 3, 4, 10, 12, 18, 20HURRY HURRY PLS