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3 years ago

Find the mean of the numbers 1, -3, -10 -15, 4, -22 -7.5, 3, -6.5

Mathematics

2 answers:

Travka [436]3 years ago

5 0

Answer:

13. -4 14. -11 15. $-\frac{11}{3}$

Step-by-step explanation:

13. (1-3-10)/3

14. (-15+4-22)/3

15. (-7.5+3-6.5)/3

Jet001 [13]3 years ago

3 0

Answer:

13. -4 14. -11 15. -3.6 continued

Step-by-step explanation:

13. 1+-3= -2+-10 -12/3= -4

14. -15+4= -11+-22= -33/3 -11

15. -7.5+3= -4.5+ -6.5= 11/3= -3.6 continued

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In △abc, ∠b is a right angle, ab⎯⎯⎯⎯⎯=1091⎯⎯⎯⎯√ab¯=1091 meters, bc⎯⎯⎯⎯⎯=30bc¯=30 meters, and ca⎯⎯⎯⎯⎯=100ca¯=100 meters. what is

Montano1993 [528]

Answer: $\text{tan a}= \frac{3\sqrt{91} }{91}$

Step-by-step explanation:

Since, in the triangle abc,

ab = 10√91 unit, bc = 30 unit, ca = 100 unit and m∠b = 90°

⇒ $\text{tan a} = \frac{bc}{ab}$

⇒ $\text{tan a} = \frac{30}{10\sqrt{91}}$

⇒ $\text{tan a} =\frac{3}{\sqrt{91}}$

⇒ $\text{tan a} = \frac{3\times \sqrt{91}}{\sqrt{91}\times \sqrt{91}}$

⇒ $\text{tan a} = \frac{3\sqrt{91}}{91}$

Which is the required value of tan(∠a).

3 0

3 years ago

Find the value of each of the following: exponents

Nataly [62]

Answer:

7) is 625

8) 169

9) 1.44

10) 180??

11) 1000000

12) 3430

hopefully these are right

Step-by-step explanation:

7 0

2 years ago

Find the missing side. Round to the nearest tenth

vladimir1956 [14]

Answer:

Step-by-step explanation:

tan(35°) ≈ 0.7002

from triangle:

tan(35°) = 7/x

so:

7/x = 0,7002

7 = 0.7002•x

x = 7/0.7002 = 9,9971...

x ≈ 10.0

8 0

4 years ago

HELP

Ulleksa [173]

Answer:

Ok, to find MAD, you have to add up all of the decimals in the set, and then divide by how much decimals there are in the set.

Adding them all up...

The final result of the adding is 56.7

Now, we have to divide by how much decimals.

We now have. 56.7 / 6

Do the division.

56.7 / 6 ===> 9.45

No need to round, the final answer is 9.4

3 0

3 years ago

I need algebra help.....

Lubov Fominskaja [6]

Answer:

$y=4(3)^x$

Step-by-step explanation:

From the table given in the question,

x y Difference Ratio

1 12 - -

2 36 36-12 = 24 $\frac{36}{12}=3$

3 108 108-36 = 72 $\frac{108}{36}=3$

4 324 324-108 = 216 $\frac{324}{108}=3$

5 972 972-324 = 648 $\frac{648}{216}=3$

There is a common ratio of 3 in each successive term.

Therefore, data given in the table will represent an exponential function.

$y=a(b)^x$

For a point $(1, 12),$

$12=a(b)^1$

$ab=12$ ------(1)

For another point of the table $(2,36)$ ,

$36=a(b)^2$

$ab^2=36$ --------(2)

Equation (2) divided by equation (1)

$\frac{ab^2}{ab}=\frac{36}{12}$

$b=3$

From equation (1),

$3a=12$

$a=4$

Therefore, exponential function will be,

$y=4(3)^x$

7 0

3 years ago