All categories

3 years ago

Help please 15 point and explanation would be great

Mathematics

1 answer:

scZoUnD [109]3 years ago

7 0

Answer:

C) 70°

Step-by-step explanation:

whole circle = 360°

inscribed angle theorem says that the measure of inscribed angle = 1/2 measure of intercepted arc

m∠DCB =1/2 m arc DB

46° = 1/2 m arc DB multiply both sides by 2

92° = m arc DB

m arc DC = 360° - 92° -128° = 140°

m ∠DBC = 1/2 m arc DC = 1/2*140° = 70°°

You might be interested in

What is the slope of a line perpendicular to 24x-9y=63

Gelneren [198K]

In order to find the slop it is probably best to put the equation in y=mx+b form. This means to get y by itself on one side.
24x-9y=63 will then become -9y=63-24x in which y has been isolated.
Then you should divided by -9 to get the final form: y=24x/9 -63/9.
Now you can get the slope of the perpendicular line by taking the slope of the original equation and finding its reciprocal which is -9/24x. This is your answer.

3 0

2 years ago

4x + 6y - z=-18 3x +2y - 4z = -24 - 5x + 3y + 2z = 15 find x y and z

Anna71 [15]

Answer:

x = -2, y = -1, z = 4

Step-by-step explanation:

4x + 6y - z=-18

z = 18 + 4 x + 6 y

3x +2y - 4z = -24

z = 6 + (3x)/ 4 + y /2

- 5x + 3y + 2z = 15

z = 15/2 + (5x)/2 - (3y)/2

18 + 4 x + 6 y = 6 + (3x)/ 4 + y /2 = 15/2 + (5x)/2 - (3y)/2

x = -22y/13 - 48/13

4(-22y/13 - 48/13) + 6y - (15/2 + (5(-22y/13 - 48/13))/2 - (3y)/2) = -18

Compute the output value of the variables x and y with respect to the input values of x, y, and z coefficients.

4 0

3 years ago

Given that f(x) = x² + 4x, evaluate f(-2). -4 -8 -12

Aleks [24]

f(x) = x² + 4x
so
f(-2) = (-2)² + 4(-2)
f(-2) = 4 - 8
f(-2) = -4

answer
-4

6 0

3 years ago

Read 2 more answers

URGENT I NEED HELP!!!!!!!!!!!!!!!!!!!!

Nataliya [291]

Answer:

$11

Step-by-step explanation:

66/6=11

3 0

2 years ago

Methods of statistics show that if a vegetarian diet had no effect on blood pressure, there would be less than 1 chance in 100 o

Andreas93 [3]

Answer: hi your question is incomplete below is the complete question

answer:

The result has a statistical significance because from the results obtained from the sample of people whom followed vegetarian diet and the people whom followed non-vegetarian diet we can see the different effects on blood pressure.

The result has a practical significance because the large difference in mean values.

Step-by-step explanation:

Sample size = 85 followed a vegetarian diet

Period = 4 months,

Mean systolic blood pressure= 124 mmHg

Sample size = 75 followed non-vegetarian diet

Period = 4 months

Mean systolic Bp = 138 mmHg

Reasons/explanations

Given that p -value < 0.01 we will reject the null hypothesis

The result has a practical significance because the large difference in mean values.

7 0

2 years ago