1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ella [17]
3 years ago
9

15. Identify the diameter of circle A.

Mathematics
2 answers:
Marina86 [1]3 years ago
8 0

Answer:

Step-by-step explanation:

no its just a i just knownffhuywgf7y6eiacvbs iuywqavke

liq [111]3 years ago
7 0

Answer:

C: BT

Step-by-step explanation:

a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

You might be interested in
Identify the y-intercept, constant factor, and exponent for each function below.
harina [27]
A is 6 for the intercept.
5 0
3 years ago
Let V denote the set of ordered triples (x, y, z) and define addition in V as in
icang [17]

Answer:

a) No

b) No

c) No

d) No

Step-by-step explanation:

Remember, a set V wit the operations addition and scalar product is a vector space if the following conditions are valid for all u, v, w∈V and for all scalars c and d:

1. u+v∈V

2. u+v=v+u

3. (u+v)+w=u+(v+w).

4. Exist 0∈V such that u+0=u

5. For each u∈V exist −u∈V such that u+(−u)=0.

6. if c is an escalar and u∈V, then cu∈V

7. c(u+v)=cu+cv

8. (c+d)u=cu+du

9. c(du)=(cd)u

10. 1u=u

let's check each of the properties for the respective operations:

Let u=(u_1,u_2,u_3), v=(v_1,v_2,v_3)

Observe that  

1. u+v∈V

2. u+v=v+u, because the adittion of reals is conmutative

3. (u+v)+w=u+(v+w). because the adittion of reals is associative

4. (u_1,u_2,u_3)+(0,0,0)=(u_1+0,u_2+0,u_3+0)=(u_1,u_2,u_3)

5. (u_1,u_2,u_3)+(-u_1,-u_2,-u_3)=(0,0,0)

then regardless of the escalar product, the first five properties are met for a), b), c) and d). Now let's verify that properties 6-10 are met.

a)

6. c(u_1,u_2,u_3)=(cu_1,u_2,cu_3)\in V

7.

c(u+v)=c(u_1+v_1,u_2+v_2,u_3+v_3)=(c(u_1+v_1),u_2+v_2,c(u_3+v_3))\\=(cu_1+cv_1,u_2+v_2,cu_3+cv_3)=c(u_1,u_2,u_3)+c(v_1,v_2,v_3)=cu+cv

8.

(c+d)u=(c+d)(u_1,u_2,u_3)=((c+d)u_1,u_2,(c+d)u_3)=\\=(cu_1+du_1,u_2,cu_3+du_3)\neq (cu_1+du_1,2u_2,cu_3+du_3)=cu+du

Since 8 isn't satify then V is not a vector space with the addition as in R^3 and the scalar product a(x,y,z)=(ax,y,az)

b)  6. c(u_1,u_2,u_3)=(cu_1,0,cu_3)\in V

7.

c(u+v)=c(u_1+v_1,u_2+v_2,u_3+v_3)=(c(u_1+v_1),0,c(u_3+v_3))\\=(cu_1+cv_1,0,cu_3+cv_3)=c(u_1,u_2,u_3)+c(v_1,v_2,v_3)=cu+cv

8.

(c+d)u=(c+d)(u_1,u_2,u_3)=((c+d)u_1,0,(c+d)u_3)=\\=(cu_1+du_1,0,cu_3+du_3)=(cu_1,0,cu_3)+(du_1,0,du_3) =cu+du

9.

c(du)=c(d(u_,u_2,u_3))=c(du_1,0,du_3)=(cdu_1,0,cdu_3)=(cd)u

10

1u=1(u_1,u_2,u3)=(1u_1,0,1u_3)=(u_1,0,u_3)\neq(u_1,u_2,u_3)

Since 10 isn't satify then V is not a vector space with the addition as in R^3 and the scalar product a(x,y,z)=(ax,0,az)

c) Observe that 1u=1(u_1,u_2,u3)=(0,0,0)\neq(u_1,u_2,u_3)

Since 10 isn't satify then V is not a vector space with the addition as in R^3 and the scalar product a(x,y,z)=(0,0,0).

d)  Observe that 1u=1(u_1,u_2,u3)=(2*1u_1,2*1u_2,2*1u_3)=(2u_1,2u_2,2u_3)\neq(u_1,u_2,u_3)=u

Since 10 isn't satify then V is not a vector space with the addition as in R^3 and the scalar product a(x,y,z)=(2ax,2ay,2az).

8 0
3 years ago
Juan crosses out the numbers that are less than 45 and greater than 50. Circle the numbers that are left.
DIA [1.3K]

Answer:

49 and 46

Step-by-step explanation:

because they are greater than 45 but less than 50.

6 0
3 years ago
Robins eat 12 worms in the morning on an average sunny day. On rainy days, robins average 4 fewer worms per morning. Last week,
gayaneshka [121]
12*3 sunny days= 36 worms
12-4=8 worms eaten on ONE rainy day
8*4 rainy days=32 worms
32+36=68 worms eaten that week
HOPE IT HELPSSSSSS
6 0
3 years ago
Read 2 more answers
PLEASE ANSWER BOTH!!!!!! PLEASE HELP ME
Fudgin [204]
Hello! I can help you with this!

1. Okay. 1/2 as a decimal is 0.5 and 8/9 is about 0.89. Just by looking at the answer choices, A and B are both eliminated, because they are less than 1/2. 22/24 is about 0.92 as a decimal, which is more than 0.889. C is eliminated, which leaves us with D. 19/24 is about 0.79, which is greater than 0.5, but less than 0.89. 19/24 is between 1/2 and 8/9. The answer is D: 19/24.

2. Okay. Finding the answe to this will require converting the improper fraction into decimals, through dividing. Just by looking at the answers, we can eliminate C and D, because those denominators are odd. That will not get us to 9.5 evenly. 9.5 is also 9 ½. Let's try A. 46/5 is 9.2. 9.2 < 9.5. A is out. 19/2 is 9.5. 9.5 = 9.5. There. 9.5 is 19/2 expressed as a fraction in simplest form. The answer is B: 19/2.
4 0
3 years ago
Other questions:
  • Ten pounds of rice are distributed equally into 6 bags to give out at the food bank. How many pounds are in each bag?
    6·2 answers
  • Solve by completing the square. x^2 + 4x – 1= 0
    11·1 answer
  • Which of the following ratios is used in finding the sine of an angle in a right triangle?
    7·1 answer
  • Which is a correct first step for solving this equation? 4x=7+3(2x−5)
    11·2 answers
  • Solve the equation. \dfrac32 + b = \dfrac74 2 3 ​ +b= 4 7 ​ start fraction, 3, divided by, 2, end fraction, plus, b, equals, sta
    6·2 answers
  • Which equation represents a line that passes through (4,1/3) and has a slope of 3/4?
    8·1 answer
  • The sum of two numbers is 65 and their difference is 7. What is the greater of the two numbers?
    12·2 answers
  • Zalma’s stock investment in March was $120. In October, it was $400.
    5·2 answers
  • Identify the range of the parabola y=-(x+4)^2
    14·1 answer
  • 1.)Painting Jane is painting one wall of her living room. The wall is rectangular, 13 feet wide by 9 feet high. What is the area
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!