hElP plS anD tY :}

I will give brainliest if I can (only to the first person who answers)

Answer:

3r + 3/8 = 1

r = 5/24

Step-by-step explanation:

Working together, sam and charlie can change all the light bulbs in the office building in 3 hours. it would have taken charlie 8 hours to do the job alone.which equation can be used to solve for the rate, r, for sam to change all the light bulbs in the office building by himself?

For the rate, r, for sam to change all the light bulbs in the office building by himself?

One job is involved

3r + 3/8 = 1

3r = 1 - 3/8

r = 1/3 - 3/8÷3

= 1/3 - 3/8 × 1/3

= 1/3 - 1/8

r = 1/3 - 1/8

r= 8-3/24

r = 5/24

B got it right on edge 2020

Answer:

Technically, it already works because you have $16.15

Step-by-step explanation:

Answer:

A.)

Step-by-step explanation:

Answer:

m∠BCD = 90°

∠BCD is a right angle

Step-by-step explanation:

If a ray bisects an angle, that means it divides the angle into two equal parts in measure

∵ Ray CE bisects ∠BCD

→ Means divide it into two angles BCE and ECD which equal in measures

∴ m∠BCE = m∠ECD = [tex]\frac{1}{2}[/tex] m∠BCD

∵ m∠BCE = 3x - 6

∵ m∠ECD = 2x + 11

→ Equate them to find x

∴ 3x - 6 = 2x + 11

→ Add 6 to both sides

∵ 3x - 6 + 6 = 2x + 11 + 6

∴ 3x = 2x + 17

→ Subtract 2x from both sides

∵ 3x - 2x = 2x - 2x + 17

∴ x = 17

∵ m∠BCE =  [tex]\frac{1}{2}[/tex] m∠BCD

→ Substitute x in the measure of ∠BCE to find it, then use it to

   find m∠BCD

∵ m∠BCE = 3(17) - 6 = 51 - 6

∴  m∠BCE = 45°

∵ 45 = [tex]\frac{1}{2}[/tex] m∠BCD

→ Multiply both sides by 2

∴ 90 = m∠BCD

∴ m∠BCD = 90°

→ The measure of the acute angle is less than 90°, the measure of

   the obtuse angle is greater than 90°, and the measure of the

   right angle is 90°

∴ ∠BCD is a right angle

Answer:

B.  8/square root of 89

Step-by-step explanation:

got it right on edge :)

Value of sin(x) =  8 / √89, 0 < x < 90.

Trigonometric functions can be simply defined as the functions of an angle of a triangle where 0 < x < 90°.

Formula used

In right angled triangle ABC , ∠B = 90° , ∠C = x°

cot (x )= ( Base ) / ( perpendicular)

sin ( x) = ( perpendicular ) / ( Hypotenuse )

Pythagoras theorem

(Hypotenuse)² = (Base)² + (perpendicular)²

(AC)² = (AB)² + (BC)²

Given that

cot (x) =5 / 8 , 0< x< 90

Therefore, by comparing the given values of trigonometric function with the formula ,

Base = 5

perpendicular  = 8

Substitute the value in the Pythagoras theorem,

   (Hypotenuse)² = 5² + 8²

⇒ (Hypotenuse)² = 25 + 64

⇒  Hypotenuse   = √89                  

Therefore,

sin(x) =  8 / √89

Hence Value of sin(x) =  8 / √89, 0 < x < 90

To learn about trigonometric function: https://brainly.com/question/26719838

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Answer: this answer makes no sense

Step-by-step explanation:

Answer:No she did not she drove 336 miles

Step-by-step explanation:

Answer:368

Step-by-step explanation:

Answer:

3.4

Step-by-step explanation:

Equation:

12x = 40.8

Isolate the variable:

x = 40.8/12

x = 3.4

Answer:

x = 3.4

Step-by-step explanation:

12x = 40.8

40.8 / 12 = 3.4

x = 3.4

Answer:

h(x) = 4x - 1

Step-by-step explanation:

h(x) = f(x) + g(x)

      = 5x + 2 - x - 3 ← collect like terms

       = 4x - 1

Answer:

4x-1

Step-by-step explanation:

h(x)=5x+2+ (-x-3)

h(x) = 5x+2-x-3

h(x)=5x-x+2-3

h(x)=4x-1

Answer:

7

Step-by-step explanation:

2x+10+11+(x+2)+(3x-2)=63

2(7)+10+11+(7+2)+(3(7)-2)=63

x=7

7 is the value of x

What are sides of a pentagon with different sides ?

If the sides of a pentagon are not equal in measure, it is termed as an irregular pentagon. In this case, the perimeter of the pentagon can be calculated by using the basic formula, Perimeter = sum of its sides.

Given,

side 1 = 2x

side 2 = 10

side 3 = x+2

side 4 = 11

side 5 = 3x-2

Sum of all the sides of the pentagon,

2x+10+(x+2)+11+(3x-2)=63

2x+10+x+2+11+3x-2=63

6x+21=63

6x=63-21

6x=42

x=42/6

x=7

Read more about pentagon here :

https://brainly.in/question/17054992

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Answer:

A

Step-by-step explanation:

the reason for this equations answer to be A is because if you take the inches in one mile 63,360 and multiple it by the miles that it takes to get the school 12.8 you'll get 811,008.  

Answer:

Explained below.

Step-by-step explanation:

The correlation coefficient for the portfolio with each of the other stocks is 0.40.

This correlation coefficient is less than 1. This implies that the portfolio’s assets are weakly correlated with each other.  

The portfolio profits from modification. Randomly selected stocks are added to the portfolio.  

The correlation coefficient of these stocks with the other stocks in the portfolio is about 0.30.  

Therefore adding these randomly selected stocks will decrease the portfolio’s standard deviation.  

Company-specific risk in portfolio can be reduced by this diversification but systematic or market risk can’t be eliminated. Thus the risk will (σ) decrease slowly until σp reaches to the average standard deviation of returns on the market i.e. about 20 %.

Answer: 4.15 degrees

Step-by-step explanation:

-6 + 6.5 + 3.9 - 4/25 = -6 + 6.5 + 3.9 - 0.25 = 4.15 degrees (assuming that the am in the fourth sentence is a typo)

Answer:

2,796.

Step-by-step explanation:

First, I added 619 + 313, which is 932. Since she is able to use more, I multiplied it by two to get me 1,864. If I tried multiplying it by three, I would get 2,796, which is a perfect amount.  

0.92

The table below shows it's time to make a prototype cars to travel to different distances what is a constant rate of change in the situation in miles per hour

Answer: False

Explanation:

X is input, y is output

Answer:

length is 15 cm

Step-by-step explanation:

4 * 4 * x = 240

16x=240    : divide by 16 on both sides

x = 15

then to check

15 cm x 4 cm x 4 cm = 240 cm^3

Answer: 6 in by 8 in

Step-by-step explanation:

Answer:

78 Degrees

Step-by-step explanation:

Two supplementary angles:

4x + 2 + 3x + 3 = 180

Combine like terms:

7x + 5 = 180

Simplify

7x = 175

x = 25

(25)3 + 3 = 75 + 3 = 78

Angle DCB is 78 degrees

Answer:

78 Degrees

Step-by-step explanation:

Two supplementary angles:  (GIven)

4x + 2 + 3x + 3 = 180

Combine like terms:

7x + 5 = 180

Simplify

7x = 175

x = 25

(25)3 + 3 = 75 + 3 = 78

So,

Angle DCB is 78 degrees.

I hope it will help you :)

Answer:

Simplest

1)Epithelial stomach cell

2)Stomach lining tissue

3)Stomach

4)Digestive system

Most complex

Answer:

1)Epithelial stomach cell

2)Stomach lining tissue

3)Stomach

4)Digestive system

I hope this helps

-1 1/5 * 6      -1 5/6 * 5

-1 6/30    divided by     -1 25/30

-4/30

i think thats the answer sorry if im wrong :(

Answer:

9c + 8 = 7

Step-by-step explanation:

Answer:

Subtract 15 from both sides.

5t > 35

Divide both sides by 5.

t > 7

(Sorry, I can't do the > with the _ under it.)

Please mark me Brainliest; I need it to move onto the next level. =D

Answer:

Angle BCD is 13 degrees

Step-by-step explanation:

Here, we want to find the measure of angle BCD

To get this, we need an appropriate diagram. The diagram can be seen in the attachment.

To find the value of BCD, we can use an important triangle theorem.

This is that the sum of opposite interior angles of a triangle equals the exterior angle.

Thus, we have that;

BCD + DBC = CDE

hence;

3x + 5 + 2x + 3 = 9x-12

5x + 8 = 9x -12

9x-5x = 8 + 12

4x = 20

x = 20/4

x = 5

So the measure of BCD will be 2(5) + 3 = 10 + 3 = 13

Answer:

13°

Step-by-step explanation:

just solved on delta math

Answer:

If your question is [tex]\sqrt{80}[/tex], your answer is 8.94 or [tex]4\sqrt{5}[/tex]

Hope this helps!

Answer:

EF ≈ 1.98

Step-by-step explanation:

Using the sine ratio in the right triangle

sin26° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{EF}{FD}[/tex] = [tex]\frac{EF}{4.5 }[/tex] ( multiply both sides by 4.5 )

4.5 × sin26° = EF

4.5 × 0.44 = EF , that is

EF ≈ 1.98 ( to 2 dec. places )

Answer:6 miles

Step-by-step explanation:

Answer:

First Day: 8

Second Day: 12

OF COURSE CORRECT.