10. Find the area of the shaded a) b) 14 cm 14 cm d) e)

Mr. Anders was three times as old as Kate 5 years ago. Their total age now is 42 years. How old is Kate now?

katrin [286]

We can write this as two equations. Call Mr. Anders' age A and Kate's age K:
$A-5=3(K-5)$
$A+K=42$

Then solve for A in the second equation:
$A=42-K$

Substitute this into the first equation:
$(42-K)-5=3(K-5)$
$-K+37=3K-15$
$52=4K$
$K=13$

6 0

3 years ago

This . 9th and 10 pleasee solve thesee ?

kykrilka [37]

9 is 9600 cause if you divide 48 by 5 you get 9.6 then times 9.6 times 1000 you get 9600
i cant solve number 10 its really blurry and hard to see

5 0

3 years ago

The perimeter of a square is 20. Find the length of the diagonal

klemol [59]

Answer:

d≈7.07

Step-by-step explanation:

Using the formulas

P=4a

d= \sqrt{2} a

Solving ford

d= \sqrt{2} P/4=2·20 /4≈7.07107

8 0

2 years ago

Read 2 more answers

6÷1/5 = A. 1 1/5 B. 1/5 C. 5/36 D. 30

trasher [3.6K]

Answer:

D. 30

Step-by-step explanation:

6 ÷ 1/5 -given expression

6 x 5 -use the keep, change, flip method, where you keep the first number, change the division sign to a multiplication sign, and flip the fraction that comes after the symbol.

6 x 5 = 30

30 is the answer

3 0

3 years ago

Discuss some ways that the concepts of covariance and correlation are similar or different.

natima [27]

Answer:

Step-by-step explanation:

Key Differences Between Covariance and Correlation

The following points are noteworthy so far as the difference between covariance and correlation is concerned:

1. A measure used to indicate the extent to which two random variables change in tandem is known as covariance. A measure used to represent how strongly two random variables are related known as correlation.

2. Covariance is nothing but a measure of correlation. On the contrary, correlation refers to the scaled form of covariance.

3. The value of correlation takes place between -1 and +1. Conversely, the value of covariance lies between -∞ and +∞.

4. Covariance is affected by the change in scale, i.e. if all the value of one variable is multiplied by a constant and all the value of another variable are multiplied, by a similar or different constant, then the covariance is changed. As against this, correlation is not influenced by the change in scale.

5. Correlation is dimensionless, i.e. it is a unit-free measure of the relationship between variables. Unlike covariance, where the value is obtained by the product of the units of the two variables.

You can find more here: http://keydifferences.com/difference-between-covariance-and-correlation.html#ixzz4qg5YbiGj

4 0

3 years ago

10.Find the area of the shadeda)b)14 cm14 cmd)e)​

10.Find the area of the shadeda)b)14 cm14 cmd)e)