All categories

3 years ago

What would you guess the mean of the

Mathematics

1 answer:

bekas [8.4K]3 years ago

6 0

Answer:

Step-by-step explanation:

add up all data values to get the sum count the number of values in your data set divide the sum by the count

You might be interested in

Choose the correct response

Aliun [14]

Answer:

74 hope this works if not I'm sorry

6 0

3 years ago

Add the polynomials (-12x^5-7x^3+12x^2+11)+(4x^3+6x^2-6x+3)

tatuchka [14]

Answer:

-12x^5-3x^3+18x^2+14

6 0

3 years ago

If LN = 6x - 5, LM = x + 7, and MN = 3x + 20, find MN. A.68 B.16 C.23 D.18

borishaifa [10]

Answer : The correct option is (A) 68.

Step-by-step explanation :

As we are given that:

LN = 6x - 5

LM = x + 7

MN = 3x + 20

Now we have to determine the value of MN.

According to the question:

LN = LM + MN

Now putting all the given values in this expression, we get:

6x - 5 = (x + 7) + (3x + 20)

6x - 5 = 4x + 27

6x - 4x = 27 + 5

2x = 32

x = 16

The value of MN = 3x + 20 = 3(16) + 20 = 48 + 20 = 68

Therefore, the value of MN is 68.

7 0

3 years ago

It would take Marco 6 hours to paint a fence by himself. It would take Jaylyn 5 hours to paint the same fence by herself. Marco

Lyrx [107]

Answer

Time taken to paint the fence by Marco and Jaylyn is 2.72 hours

Heading can be given to this is work per hour

Explanation

Macro 6 hours to paint fence by himself

Therefore his 1 hour work = 1/6

Jaylyn 5 hours to paint the same fence by herself

Therefore 1 hour work of Jaylyn = 1/5

Together 1 hour work = 1/6 + 1/5 = 11/30

Therefore time taken to paint the fence together by them = 30/11 = 2.72 hours

4 0

3 years ago

Read 2 more answers

Lindsie is painting on a canvas with dimensions of 3 ft by 4 ft. She wants to make a display model for a gallery that has twice

love history [14]

Answer:

B. 1.4 feet

Step-by-step explanation:

Let, the amount of increase be 'x' ft.

Since, the length and width of the canvas are 4 ft and 3 ft respectively.

Thus, area of the canvas, $A_{c}$ = length × breadth = 4 × 3 = 12 ft²

Since, the area of display model is twice the area of the canvas. We have,

$A_{d}$ = 2 × $A_{c}$

i.e. $A_{d}$ = 2 × 12

i.e. $A_{d}$ = 24 ft².

As, the length and width of the canvas are increased by 'x'.

The, length and width of the display model are (x+4) ft and (x+3) ft.

So, we get,

$A_{c}$ = length × breadth = (x+4) × (x+3) = $x^{2} +7x+12$

Since, $A_{d}$ = 24 ft²

i.e. $x^{2} +7x+12$ = 24

i.e. $x^{2} +7x-12=0$

Solving the quadratic equation, we get,

i.e. x = -8.4 and x= 1.4

Since, the value of x cannot be negative.

Thus, x = 1.4 feet.

4 0

3 years ago