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bulgar [2K]
3 years ago
6

PLZ HELP ASAP I NEED IT NO LINKS AND PLZ EXPLAIN AWNCER ive tryed and i still dont get it

Mathematics
1 answer:
iVinArrow [24]3 years ago
3 0
The answer to this i believe would be B
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The diameter of the larger circle is 10.5 cm. The diameter of the smaller circle is 4.5 cm. What is the approximate area of the
Maurinko [17]
<span>The approximate area of the shaded region would be </span>47.25 cm.

4 0
3 years ago
I really need Help Please!!!!!!!!
jeyben [28]

Look at the picture.

The equation:

10x - 15 = 6x + 9       <em>add 15 to both sides</em>

10x = 6x + 24      <em>subtract 6x from both sides</em>

4x = 24    <em>divide both sides by 4</em>

<h3>x = 6</h3>

7 0
3 years ago
Read 2 more answers
Can you help me with this maths question? (image attached)
mafiozo [28]
The radius is 10.4 cm. And the angle is 120 which is 1/3 of the circle. 
Just use the area formula: 3.14 *r^2 to find the total area of 339.62 and then divide this by 3 to get 113.21. Then to subtract the triangle..find the area of the traingle which is 1/2 (10.4)^2 = 54.08. 113.21 - 54.08 = 59.13 which should be your answer
8 0
3 years ago
Written as a simplified polynomial in standard form, what is the result when (3x-1)^2 is subtracted from 4?
nikklg [1K]

Answer:

3(x-1)x(3x+1)

Step-by-step explanation:

3 0
2 years ago
g A popular theory is that presidential candidates have an advantage if they are taller than their main opponents. Listed are he
stira [4]

Answer:

Step-by-step explanation:

Corresponding heights of presidents and height of their main opponents form matched pairs.

The data for the test are the differences between the heights.

μd = the​ president's height minus their main​ opponent's height.

President's height. main opp diff

191. 166. 25

180. 179. 1

180. 168. 12

182. 183. - 1

197. 194. 3

180. 186. - 6

Sample mean, xd

= (25 + 1 + 12 - 1 + 3 + 6)/6 = 5.67

xd = 5.67

Standard deviation = √(summation(x - mean)²/n

n = 6

Summation(x - mean)² = (25 - 5.67)^2 + (1 - 5.67)^2 + (12 - 5.67)^2+ (- 1 - 5.67)^2 + (3 - 5.67)^2 + (- 6 - 5.67)^2 = 623.3334

Standard deviation = √(623.3334/6 sd = 10.19

For the null hypothesis

H0: μd ≥ 0

For the alternative hypothesis

H1: μd < 0

The distribution is a students t. Therefore, degree of freedom, df = n - 1 = 6 - 1 = 5

The formula for determining the test statistic is

t = (xd - μd)/(sd/√n)

t = (5.67 - 0)/(10.19/√6)

t = 1.36

We would determine the probability value by using the t test calculator.

p = 0.12

Since alpha, 0.05 < than the p value, 0.12, then we would fail to reject the null hypothesis.

Therefore, at 5% significance level, we can conclude that for the population of heights for presidents and their main​ opponents, the differences have a mean greater than 0 cm.

5 0
3 years ago
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