Mathematics College

what is the value of k?​

What Is The Value Of K?

Answers

Answer 1

Answer:

(4k+5)+ (6k+10) = 115

Exterior angle of a triangle is equal to the sum of two opposite interior angles

10k=15=115

10k= 100

k = 100/10

k = 10

Step-by-step explanation:

Answer 2

Answer:

k = 10

Step-by-step explanation:

The 3rd angle that's not defined in the equation is supplementary to 115, so the angle is 180-115 = 65.

We can solve for the equation 65+(4k+5)+(6k+10)=180 -> 65+4k+5+6k+10=180 -> 10k+80 = 180 -> 10k = 100 -> k = 10.

To double-check(optional), we can plug k back into the equation, so 65 + 4*10 + 5 + 6*10 + 10 = 180 -> 100 + 65 + 5 + 10 = 180 -> 180 = 180, so we can confirm that k = 10.

Related Questions

In the following diagram which is not drawn to scale, why can't both line AB and line AC be perpendicular to line BC?​

Answers

Answer:

AC and AB both can't be perpendicular to line BC because if they were, then AB and AC would be parallel to each other and would never intersect. In this diagram, AB and AC intersect, so it it not possible.

Perpendicular lines meet at a right angle.

AB and AC cannot be perpendicular to BC because AB and AC are not parallel

From the diagram, we can see that line AB and line AC intersects at point A.

This means that both lines are not parallel

For any two lines to be perpendicular to a third line, the two lines must be parallel to each other.

So, we can conclude that:

Lines AB and AC cannot be perpendicular to line BC because both lines are not parallel.

Read more about parallel and perpendicular lines at:

https://brainly.com/question/12731518


Which of the following exponential equations shows a reflection over the y-axis, a vertical
stretch by a factor of 2, and horizontal shift right 1.
a. y = -2(4)* – 1
b. y = -2(4):-1
c. y = 2(4)-x-1
d. y = 4(2)-x-1

Answers

Answer:

we are given

parent function as

(1)

vertical stretch of factor 2

so, we can multiply y-value by 2

then a shift right of 3 units

so, we can replace x as x-3

(2)

a shift left by 2 units

we can replace x as x+2

then a horizontal shrink factor of 1/2

so, we can multiply by 2 to x-value

then a shift down of 5 units

we can subtract y-value by 5

so, we get

(3)

a shift to the right 1 unit

we can replace x as x-1

stretched vertically by a factor of 1/2

we can multiply y-value by 1/2

then is shifted down 4 units

we can subtract y-value by 4

(4)

reflected across the x-axis

we can multiply y-value by -1

tretched vertically by a factor of 3

multiply y-value by 3

shifted left 7 units

we can replace x as x+7

Step-by-step explanation:

77777777777777777777777777777

Please help asap, no rocky!

Answers

No, because it has a constant rate of change

how do i check 8d-25=3d

Answers

Answer:

d=5

Step-by-step explanation:

That is the answer if that is what you were looking for.

your welcome

8d-25=3d

8d-3d=25

5d=25

d=5

d=5

8d-25=3d

8(5)-25=3(5)

40-25=15

15=15 so it’s right

Jaun has $10 to spend. He needs $13 to purchase the supplies.explain how to find the amount of money juan is short

Answers

Answer:

$10 - $13 is -3, which menas he is $3 short.

Step-by-step explanation:

Answer:

take the amount Jaun has ($10) and subtract it from the amount he needs ($13). you will get 3$ which is the amount of money he is short.

Step-by-step explanation:

Hope this helps you

1 inch = 2.54 centimeters. How many centimeters long is an 18-inch ruler?

Answers

Answer:

45.72 cm

2.54 x 18

Answer:

45.72 centimeters

Step-by-step explanation:

If an inch is 2.54cm, an 18in ruler would be 18 times as many centimeters...

2.54x18=45.72

Hope this helps C:

Convert 36 inches to feet. There are 12 inches in a foot.
A. 432 feet
B. 3 feet
C. 6 feet
D. 360 feet

Answers

Answer:

B

Step-by-step explanation:

36/12=3 feet

B : 3 feet
36 inches • (1 foot/12 inches) = 3

what is a thesis statement?​

Answers

Answer:

A thesis statement is a claim

Step-by-step explanation:

The thesis statement is the sentence that states the main idea of a writing assignment and helps control the ideas within the paper. It is not merely a topic. It often reflects an opinion or judgment that a writer has made about a reading or personal experience. For instance: Tocqueville believed that the domestic role most women held in America was the role that gave them the most power, an idea that many would hotly dispute today.

The conversion of ammonium cyanide to urea is a second-order reaction. This means that the concentration C of ammonium cyanide at time t is given by 1/C = kt + 1/C0, where C0 is the initial concentration and k is the rate constant. Assume the initial concentration is known to be 0.1 mol/L exactly. Assume that time can be measured with negligible uncertainty.

a. After 45 minutes, the concentration of ammonium cyanide is measured to be 0.0811 ? 0.0005 mol/L. Estimate the rat? constant k, and find the uncertainty in the estimate.

b. Use the result in part (a) to estimate the time when the concentration of ammonium cyanide will be 0.0750 mol/L, and find the uncertainty in this estimate.

Answers

Answer:

your answer could be A

Step-by-step explanation:

4.131313.... as a fraction and a mixed number

Answers

Answer:

 409/99

 4  13/99

Step-by-step explanation:

Hi there !

4.131313.. = 4.(13) = 4  13/99 = (4*99+13)/99 = 409/99

Good luck !

Complete the sentence.
The amount of energy it takes to move a couch is most likely to be a function
of the
A. age of the couch
B. weight of the couch
C. color of the couch
O O
D. day of the week the couch is being moved

Answers

B. Weight of the couch

The amount of kinetic energy required to move a couch is most likely to be a function of the weight of the couch.

What is kinetic energy?

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity.

Learn more about kinetic energy here

https://brainly.com/question/12669551

#SPJ3

-9(-2 -9)+(-16)-
——————
-8

Answers

Answer:[tex]-10\frac{3}{8}[/tex]

Step-by-step explanation:

I dont know if the live on the other side of 16 is a mistake but if it is than thats the answer above.

Need Help please i will mark brainliest when it lets me

Answers

Answer:

The answer is C, reflection over the y-axis.

Step-by-step explanation:

It is reflection because everything was flipped over the y-axis.

Find the distance FG between the points F (0,-7) and G (-6,-3) . Round your answer to the nearest tenth, if necessary

Answers

Answer:

7.2

Step-by-step explanation:

help ????????!???????????!???????

Answers

Answer:

1/8= 12.50

1/4 =250 apologize for not being able to answer the last one

1
3
5
× 1
1
3
=
8
5
×
4
3
=
Find the product of the mixed numbers. Choose the correct answer.
StartFraction 4 Over 5 EndFraction
1 and StartFraction 3 Over 15 EndFraction
2 and one-half
2 and StartFraction 2 Over 15 EndFraction

Answers

Answer:

2 2/15

Step-by-step explanation:

Solve the system and explain what the answer means Y-5=3x, -2Y+6x=4

Answers

Answer:

NO SOLUTION

Step-by-step explanation:

solve for  y in :  y-5=3x which is then y=3x+5

then substitute y=3x+5 into -2y+6x=4 which is then -10=4

and then lastly since -10=4, it is not true, this is an inconsistency system,

SO NO SOLUTION

Round 1(4),883 to the place value in parenthesis.
1. 15,000
2. 10,000
3. 14,000
4. 14,900

Answers

Answer:

the answer is number 4 because you just put all of them in parenthesis

PLEASE HELP ME!!!
Solve the following system of equations using the elimination method.
2x + 4y = 10

–2x + y = –15
Question 9 options:

A)

(–2,7)

B)

(3,1)

C)

(8,–3)

D)

(7,–1)

Answers

Answer:

The answer is D

Step-by-step explanation: I solved by subsitution and found y=2x-15 So therefore 2x+4(2x-15)=10 and then x=7 and that was the only answer with7 as x but to check I did y=2(7)-15 and y=-1

Need help with question 5!!!!! ASAP PLEASE!!!

Answers

Answer:

B. 2-5 the answer is B. 2-5

Answer:

I think b

Step-by-step explanation:

2. Jack’s parents were planning a big birthday party for him. Answer the questions below. Show your work for all parts.
a. His parents spent $4.49 on each of 6 goodie bags. How much did they spend on goodie bags?

b. They spent $150 to rent a bounce house for 8 hours. How much is the hourly rate for the rental?


c. If the parents spent a total of $400 on everything for the party, how much more did they spend in addition to what was spent in parts (a) and (b)?

Answers

A. Do 4.49 times 6 B. Do 150 divided by 8 C. I belive you add the answers for A and B and then subtract that from 400 and then that’s your answer for part C

A. Do 4.49 times 6 B. Do 150 divided by 8 C. I belive you add the answers for A and B and then subtract that from 400 and then that’s your answer for part C

I will give you branilest!

The EPA estimated that in 2013, the average amount of garbage produced in the United States was 4.4 pounds per person per day. At that rate, how long would it take YOUR family to produce a ton of garbage? (A ton is 2,000 pounds.)

Answers

Answer:

my family has six people so 75.76 days

Step-by-step explanation:

multiply 4.4 with the number of people in your family, then divide 2000 by that number

example:

4.4 x 6= 26.4

2000/26.4 = 75.75 which rounds to 75.76

What is the effective annual rate for an APR of 10.60 percent compounded quarterly?

Answers

Answer:

The effective annual rate is 11.03%

Step-by-step explanation:

The effective interest rate is calculated through the formula:

[tex]r = (1 + i/n)^n - 1[/tex]

In this formula, r represents the effective interest rate, i represents the stated interest rate or APR, and n represents the number of compounding periods per year.

For a quarterly compounded interest, n=4. The APR i=10.60%=0.106

Given an APR r, the effective annual rate for a quarterly compound is:

[tex]r = (1 + 0.106/4)^4 - 1=1.0265^4-1[/tex]

[tex]r=1.11029-1=0.1103[/tex]

The effective annual rate is 11.03%

What’s a better buy? 3 pounds of apples for $1.89 or 1 pound of apples for $.79?
WILL MARK BRAINLYIEST ANSWER ASAP PLZ!

Answers

Answer:

3 pounds of apples for $1.89

Step-by-step explanation:

1 pound of apples for $.79

so 3 pound x 0.79= 2.37

So 1.89 for 3pound is the better buy

I really need help with this question, please!

Answers

Answer:

The triangles are not similar to each other .

What are the coefficients for the binomial expansion of (a + b)3?
O 1, 4, 6, 4, 1
O 1,1
O 1, 2,1
O 1,3,3, 1

Answers

The fourth option I got that last time

Answer:

D

Step-by-step explanation:

The volume, V, of a rectangular prism is determined using the formula V=lwh, where l is the length, w is the width, and h is the height of the prism.


Using this formula, what is the width of a rectangular prism that has a volume of 138.24 cubic inches, a height of 9.6 inches, and a length of 3.2 inches? Round to the nearest tenth.


0.2 inches

4.5 inches

46.1 inches

414.7 inches

Answers

Answer:

4.5inches

Step-by-step explanation:

Given the volume of a prism expressed as:

V =lwh where:

l is the length

w is the width,

h is the height of the prism.

Given

V = 138.24in³

h = 9.6in

l = 3.2in

w = ?

Substitute the given values into the formula to get the width

138.24 =  9.6*3.2*w

138.24 = 30.72w

w = 138.24/30.72

w = 4.5in

Hence the width of the rectangular prism is 4.5inches

The width of the rectangular pyramid that has a volume of 138.24 cubic inches, a height of 9.6 inches, and a length of 3.2 inches is 4.5 inches.

Volume of a rectangular pyramid:v = lwh

where

l = length

w = width

h = height

v = 138.24 inches³

h = 9.6 inches

l = 3.2 inches

w  = ?

138.24 = 9.6 × 3.2 × w

138.24 = 30.72w

w = 138.24 / 30.72

w = 4.5 inches

learn more on volume of a rectangular pyramid here: https://brainly.com/question/13410734?referrer=searchResults

a tank holds 480 gallons of fuel. if it drained at a rate of 120 gallons Per minute, it will be empty in __ seconds

Answers

240 seconds, 60 times 4 is 480. there is 60 seconds in a minute, times that by 4.

Answer:240 seconds

Step-by-step explanation:


A car travels 26.35 miles with one gallon of gas. The tank
can hold 21.5 gallons of gas. How many miles can the car
travel on a full tank of gas.
Explain the error in the problem and then solve correctly.

Answers

Answer:

566.525

Step-by-step explanation:

26.35 × 21.5

Certain answers only and I will mark you as brain crown! Hopefully it isnt too hard. There are 12 questions in total.

Answers

I don’t necessarily see any questions so I’ll come up with my own.

1. When was the first phone invented.
2. When was the state or Georgia founded.
3. How can you prevent bleeding from a scrape.
4. Do I have 40$ in my pocket.
5. What is the meaning of life.
6. Is breathing a metaphor for something.
7. How can I enter a bank vault without getting arrested.
8. Is murder legal in the middle of 4 different states.
9. What is the standard cost of a .45 Handgun.
10. Where is the nearest Arby’s to my location in Birmingham, Alabama.
11. Why does mint make everything taste bad.
12. Are you even gonna answer these questions.

Answer:

Don't know sorry

Step-by-step explanation:

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