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4 years ago

Find the average of the data set- 3,4,7,2,5,9. Explain your work.

1 answer:

4 0

Add all the numbers up, and divide by how many numbers you added up.
-3 + 4 + 7 + 2 + 5 + 9 = 24
You added up 6 numbers, now divide 24 by 6.
24 ÷ 6 = 4

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Which expression has the same value as the one below ? 50 + (-17)

irina [24]

Answer:

=33

Step-by-step explanation:

8 0

3 years ago

Owen Munney went to the store for his barbeque. He bought 3

MArishka [77]

Answer:

Step-by-step explanation:

beef = x and chicken = y

3x+4y=32

2x+5y=33

7 0

3 years ago

Solve: 2.5k+47.4=81.9

belka [17]

Answer:

k=13.8

Step-by-step explanation:

Given function:

2.5k+47.4=81.9
to find k..

Subtract final and middle value:

$81.9-47.4= 34.5$

Divide by 2.5:

$34.5*2.5=13.8$

Therefore, k=13.8..

8 0

3 years ago

Quadratic Equation

Natasha_Volkova [10]

Step-by-step explanation:

The sum of ages of two friends is 13 years.

The product of their ages is 42.

Let the age of 1st friend and 2nd friend is x, y respectively.

1 st condition= The sum of ages of two friends is 13 yrs.

i.e x+y = 13........ (I)

2nd condition= The product of their ages is 42.

i.e X*y = 42........(ii)

From equation (I)

X+y = 13

or, X = 13-y........ (iii)

Putting the equation (iii) in equation (ii).

X*y= 42

(13-y) * y = 42

13y - y^2 = 42

${y}^{2} - 13y + 42 = 0$

${y}^{2} - (7 + 6)y + 42= 0$

${y}^{2} - 7y - 6y + 42 = 0$

$y(y - 7) - 6(y - 7) = 0$

$(y - 6) (y - 7) = 0$

Either; y-6 = 0

y = 6

Or;

y-7=0

y = 7

Keeping the value of y as "7" in equation (ii)

x*y = 42

7x = 42

X = 42/7

Therefore, the value of X is 6.

Therefore, either 1st friend is 6 years and 2nd is 7 years.

Hope it helps...

7 0

3 years ago

In the diagram on the side, BCDE and ACF are straight lines. Calculate the values of x and y.

victus00 [196]

Answer:

y=62 degrees

x=160 degrees

Step-by-step explanation:

8 0

3 years ago