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nadya68 [22]
3 years ago
5

Find the zero of a function for n(x)= -6x+18, please show your work.

Mathematics
1 answer:
Elenna [48]3 years ago
4 0

Answer:

3

Step-by-step explanation:

Find the value of x for which n(x) = 0.

-6x+18 = 0

6x = 18

x = 3

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What's the missing angle
Travka [436]
The missing angle is 27° because a triangle equals 180° and 180-119=61 and 61-34= 27.
5 0
3 years ago
Bad gums may mean a bad heart. Researchers discovered that 81% of people who have suffered a heart attack has periodontal diseas
IgorC [24]

Answer:

0.405 or 40.5%

Step-by-step explanation:

Let event A=having a periodontal disease

event B=having a heart attack

we are given

P(A)=P(having a periodontal disease)=0.30

P(B)=P(having a heart attack)=0.15

P(A/B)=P(have a periodontal disease/have a heart attack)=0.81

P(B/A)=P(have a heart attack/have a periodontal disease)=?

P(A/B)=P(A∩B)/P(B)

P(A∩B)=P(B)*P(A/B)=0.15*0.81=0.1215

P(B/A)=P(A∩B)/P(A)=0.1215/0.3=0.405

There is 40.5% probability that if someone has periodontal disease will have a heart attack.

7 0
3 years ago
The circumference of a circle is 69.08 yards. What is the circle's radius? Use 3.14 ​
yawa3891 [41]

Answer:

r = 11

Step-by-step explanation:

C = 2πr

69.08 = 2(3.14)r

69.08 = 6.28r

r = 69.08/6.28

r = 11

4 0
3 years ago
The slope of the rafter is 15 m.Half the run of the rafter measure 12m.find the height of the ridge from the base
Korvikt [17]

Answer:

9\; \rm m.

Step-by-step explanation:

Assume that the run of this rafter is level. Then the height of the ridge (the line with a question mark next to it in the diagram) should be perpendicular to the line marked with \rm 12\; m. The three labelled lines in this diagram will form a right triangle.

  • The line marked as 15\; \rm m will be the hypotenuse of this right triangle.
  • The line marked as 12\; \rm m will be one of the triangle's legs.
  • The line representing the height of the ridge (the one with the question mark) will be the other leg of this right triangle.

Hence, the height of this ridge can be found with the Pythagorean Theorem. By the Pythagorean Theorem:

(\text{First Leg})^2 + (\text{Second Leg})^2 = (\text{Hypotenuse})^2.

In this particular right triangle:

(\text{Height})^2 + (12\; \rm m)^2 = (15\; \rm m)^2.

(\text{Height})^2 = (15\; \rm m)^2 - (12\; \rm m)^2.

Therefore, the height of this ridge would be \sqrt{81}\; \rm m = 9\; \rm m. (Note the unit.)

4 0
3 years ago
Help me on this homework
Leona [35]
Shift all one to the left take all the vertices and move them left one
5 0
3 years ago
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