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2 years ago

PLEASE HELP, WILL GIVE BRAINLIEST!! THIS QUESTION NEEDS NO MATHEMATICAL CALCULATION. I JUST NEED THE RIGHT ANSWER PLEASE!!

Mathematics

2 answers:

qaws [65]2 years ago

5 0

Answer:

Answer is D.)

Step-by-step explanation:

If im wrong im really sorry i tried to ork this out in my head as fast as possible.

tigry1 [53]2 years ago

5 0

Answer:

D, 2ttr represents the portion of the circumference of the circle that the arc spans .

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Consider the sequence 3, -9, 27, -81 what an explicit formula for the sequence

Nataly_w [17]

-(-3)power (n )
n is 1;2;3;4;....

6 0

3 years ago

Find the second decile of the following data set 24, 64, 25, 40, 45, 34, 14, 26, 28, 24, 58, 51 D2 =

Sergio039 [100]

Answer:

D2 = 24

Step-by-step explanation:

given is a data set as

24, 64, 25, 40, 45, 34, 14, 26, 28, 24, 58, 51

We have to find the second decile for the above

Arranging in ascending order we get

14, 24, 24, 25,26,28, 34, 40, 45, 51, 58, 64

2nd decile is equal to 20th percentile

20th percentile formula entry appearing which sorts 20% below and 80% above.

i.e. (20%*(14+1)) = 3rd entry

Thus 20th percentile is24.

D2 = 24

7 0

2 years ago

Find the slope (-8,10) (8,15)

Novosadov [1.4K]

<h3>Question:</h3>

find the slope (-8,10) (8,15)

<h3>Answer:</h3>

m = $\frac{5}{16}$

<h3>Step-by-step explanation:</h3>

Use the slope formula $\frac{y2-y1}{x2-x1}$

(x2,y1) = (-8,10) , (x2,y2) = (8,15)

m = $\frac{15-10}{8-(-8)}$

m = $\frac{5}{16}$

Hope this helps :)

Please consider marking my answer brainlist!

7 0

3 years ago

The height of a triangle is 8ft greater than the base. The area of the triangle is 136.5 square ft. Find the length of the base

mixer [17]

Answer:

the base is 9/2 ft and the height is 9/2 + 8, or 25/8, ft.

Step-by-step explanation:

Note that the formula for the area of a triangle is A = (1/2)(base)(height). Let's abbreviate that to A = (1/2)(b)(h). We are told that h = b + 8.

Then A = 136.5 = (1/2)(b)(b + 8), or

(after multiplying both sides by 2)

A = 273 = b^2 + 8b

which, when put into standard quadratic form, becomes:

b^2 + 8b - 273 = 0

The coefficients of this quadratic are a = 1, b = 8 and c = -273.

Thus, the discriminant is b^2 - 4ac, or 64 - 4(1)(-273) = 1156 = 17^2.

The roots are then

-8 ± √1156 -8 ± 17

x = -------------------- = ------------ = 9/2 and -25/2

2 2

Only the root 9/2 makes sense here, because measurements of length are positive.

Thus, the base is 9/2 ft and the height is 9/2 + 8, or 25/8, ft.

3 0

3 years ago

Helen had $330 in her savings account when Vince opened a savings account with zero dollars.

Nastasia [14]

I think the answer is 30x+330>50x

Step-by-step explanation:

for the option A it was slightly changed,

cause the $30 was deposited by <em><u>helen</u></em> not <em><u>Vince.</u></em>

<em><u>so </u></em><em><u>check </u></em><em><u>that </u></em><em><u>well</u></em>

4 0

2 years ago