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3 years ago

Which expression is equivalent to 1/2(2n+6

Mathematics

2 answers:

Sati [7]3 years ago

7 0

Answer:

n+3

Step-by-step explanation:

Andrei [34K]3 years ago

4 0

Answer:

n+3

Step-by-step explanation:

1/2(2n+6)= (1/2*2)n+(1/2*6)

1/2(2n+6)=n+3

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-9-(-5) is the same as

Alex_Xolod [135]

Answer:

- 4

Step-by-step explanation:

= - 9 - (- 5)

= - 9 + 5

= - 4

hope it's helpful 

3 0

3 years ago

The furthest angle of elevation to the top of the steeple was 20 degrees and the closest angle elevation to the church was 29 de

Otrada [13]

The angle measure of ACB is 9 degrees

Answer: Option B

Step-by-step explanation:

To find the solution to the given problem, first we need to look into the point B. It consists two angles and both of them are on a straight angle. So, this means that the sum of angle ABC and CBD is 180 degrees, that is

$\angle A B C+\angle C B D=180^{\circ}$

We know that $\angle C B D=29^{\circ}$ . Therefore

$\angle A B C+29^{\circ}=180^{\circ}$

$\angle A B C=180^{\circ}-29^{\circ}=151^{\circ}$

Now, in the triangle ABC, we know that all three angles must sum 180 degrees,

$\angle C A B+\angle A B C+\angle B C A=180^{\circ}$

$20^{\circ}+151^{\circ}+\angle B C A=180^{\circ}$

$\angle B C A=180^{\circ}-20^{\circ}-151^{\circ}=9^{\circ}=\angle A C B$

Therefore, the angle ACB is 9 degrees.

7 0

3 years ago

What is the center and radius of the circle? (x-9)^2 + (y-8) =4

Umnica [9.8K]

Answer:

C(9,8) and r=2

Step-by-step explanation:

k:(x-9)^2 +(y-8)^2 =4

k:(x-p)^2 +(y-q) ^2 =r^2

p=9, q=8, r=2-radius

C(p,q)=C(9,8)-center

8 0

2 years ago

There are 72 students in the gym. 45 students are girls. The rest are boys. What is the ratio of boys to girls?

PIT_PIT [208]

Answer:

3 to 5

Step-by-step explanation:

To find the number of boys, take the total students and subtract the girls

72 -45 =27

We want the ratio of boys:girls

boys:girls

27:45

Divide each number by 9

27/9:45/9

3 : 5

3 0

2 years ago

How many solutions does the following system of equations have?

lesya692 [45]

I think the answer is

A.) infinitely many

8 0

2 years ago

Which expression is equivalent to 1/2(2n+6 ​

Which expression is equivalent to 1/2(2n+6