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nirvana33 [79]
3 years ago
15

Find the measure of each angle.

Mathematics
1 answer:
Kruka [31]3 years ago
8 0

Answer:

b

Step-by-step explanation:

23/pi is 23.00 pi=3.14 23-3.14= 19.86-86=19+4= 23pi/4

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HEY PLEASE HELP. The student's savings box had accumulated 35 twenty and fifty cent coins in one month, in the total amount of 1
stira [4]

Answer: 11 and 24

Step-by-step explanation:

Given

There are 35- 50 cents and 20 cents coins

The total of them is 10.3 euros

Suppose no of 50 cents coins is x and 20 cents is y

so we can write

\Rightarrow 0.5x+0.2y=10.3\quad \ldots(i)

Also,

\Rightarrow x+y=35\quad \ldots(ii)

Solving (i) and (ii) we get

x=11; y=24

There are 11 fifty cent and 24 twenty cents coins

6 0
3 years ago
Different groups of 100 graduates of a business school were asked the starting annual salary for their first job after graduatio
Sever21 [200]

Answer:

960

Step-by-step explanation:

Divide 96,000 into 100 and you will get your Answer

3 0
3 years ago
Read 2 more answers
Let V be the set of vectors in R2 with the following definition of addition and scalar multiplication:
Maksim231197 [3]

Answer:

See below

Step-by-step explanation:

I will denote your new addition by +', and your new scalar multiplication by * to distinguish them from the usual operations.

1) x+'y=y+'x. Yes: Let x=[a,b] and y=[c,d].  Then x+'y=[0,b+d]=[0,d+b]=y+'x

2) (x+'y)+'z=x+'(y+'z). Yes: Let x=[a,b], y=[c,d], z=[e,f]

Then (x+'y)+'z=[0,b+d]+'[e,f]=[0,(b+d)+f]=[0,b+(d+f)]=[a,b]+'[0,d+f]=x+'(y+'z)

3) There exists an element 0 in V such that x+'0=x for each x in V: No

Take x=[1,0]. Then x+'[a,b]=[0,b]≠[1,0], so 0=[a,b] does not exist (no choice of 0 works for this x)

4) For each x in V, there exists an element -x in V such that x+'(-x)=0. Yes (if 0=[0,0])

Given x=[a,b], take -x=[a,-b]. Then x+'(-x)=[0,b-b]=[0,0]=0.

5) *k(x+y)=(*kx)+'(*ky) for each scalar k and any x and y in V. Yes

Let x=[a,b] and y=[c,d]. Then *k(x+'y)=*k[0,b+d]=[0,k(b+d)]=[0,kb]+[0,kd]=*kx+*ky.

6) (s+t)*x=(*sx)+(*tx) for any scalars s and t and any x in V. Yes

Let x=[a,b]. Then (s+t)*x=[0,(s+t)b]=[0,sb]+[0,tb]=*sx+*tx

7) (*s)(*tx)=*(st)x for any scalars s and t and any x in V. Yes

Let x=[a,b]. Then (*s)(*tx)=*s[0,tb]=[0,stb]=*(st)x

8) *1x=x for all x in V. No

*1[1,2]=[0,2]≠[1,2]

8 0
3 years ago
The diagram below shows the radius of the circular opening of a drinking cup.
ss7ja [257]

Answer:

25 cm

Step-by-step explanation:

C=2\pi r where r is the radius of the circle

Plug in the given radius (4 cm)

C=2\pi (4)\\C=8\pi\\C=25

Therefore, the circumference of the opening is approximately 25 cm.

I hope this helps!

3 0
3 years ago
Which line represents the linear equation-3y = 15
Lunna [17]

Answer:

A straight horizontal line through the point -5 on the y axis

Step-by-step explanation:

If solved, the y value is 5, so the line is on that point.

6 0
3 years ago
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