Charles decides to use the method of proportions and similar
triangles to find the height of a lamppost. He measures the length of
the post's shadow and finds it is 10 feet long. Then he holds a 12-inch
ruler perpendicular to the ground and finds that it casts a 4-inch
shadow. How tall is the lamppost?
a. 2.5 ft c. 30 ft
b. 4.8 ft d. 120 ft

Answers

Answer 1

Answer:

C. 30 ft.

Step-by-step explanation:

10 = x

12 = 4

Divide by 4

1inch shadow = 3 inches height

1 inch of a shadow is 3 inches

10 feet is 120 inches

120 * 3

360 inches height = 30 ft

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Answer 2
I think it might be A. Since sometimes shadows can come off longer than the actual object.

Related Questions

Relationship B has a lesser rate than Relationship A. Does this graph represent Relationship A. What table could represent Relationship B?

{Time (weeks) 3 6 8 10
{ Plant growth (in.) 4.8 9.6 12.8 16

{Time (weeks) 3 4 6 9
{Plant growth (in.) 6.3 8.4 12.6 18.9

{Time (weeks) 3 6 8 10
{Plant growth (in.) 2.25 4.5 6 7.5

{Time (weeks) 3 4 6 9
{ Plant growth (in.) 5.4 7.2 10.8 16.2

The first-quadrant graph showing a ray from the origin through the points begin ordered pair 2 comma 3 ends ordered pair and begin ordered pair 4 comma 6 end ordered pair. The horizontal axis label is Time in weeks. The vertical axis label is Plant growth in inches.

Answers

Answer:

The answer it’s 77

Answer:

the answer im pretty sure is A. (weeks) 3 6 8 10    (in) 4.8 9.6 12.8 16

Step-by-step explanation:

Show step by step In a day there are 86,400 seconds. Write this number in scientific notation.

Answers

Answer:

8.64 × 104

Step-by-step explanation:

Answer:

864 x 10³

Step-by-step explanation:

A plant grew 7 inches in 5 months. The plant grows the same amount each month. Use this rate to complete this table.
(Redo since the last photo was all wonky and stuff)​

Answers

Answer:

1 | 1.4

2 | 2.8

3 | 4.2

4 | 5.6

5 | 7

6 | 8.4

Step-by-step explanation:

7 inches in 5 months

7/5 = 1.4

It grows 1.4 inches a month

This is the table

1 | 1.4

2 | 2.8

3 | 4.2

4 | 5.6

5 | 7

6 | 8.4

PLEASE HELP!!!!!!!!!!!!!!!!!

Answers

Answer:

The photo isn't clear repeat it again

6.39E-26 in scientific notation please help

Answers

6.39 * 10^-26
I believe that’s the answer

Answer:

I'm so sorry I just need points :) bjsdbhdjfhedf8biehuj3

Step-by-step explanation:

Thanks

Rewrite the absolute value function y=|x|-3 as two linear functions, one that has the domain x<0, and one that has the domain x≥0.

Answers

seems the answer has been figured out

Two linear functions, one that has the domain x < 0 is y = - x - 3

And, one that has the domain x ≥ 0 is y = x + 3.

What is linear expression?

A linear expression is an algebraic statement where each term is either a constant or a variable raised to the first power.

We have to given that;

The absolute value function is,

⇒ y = |x| - 3

So, The linear function which has the domain x < 0 is,

⇒ y = - x - 3

And,  The linear function which has the domain x ≥ 0 is,

⇒ y = x - 3

Learn more about the linear function visit:

https://brainly.com/question/2408815

#SPJ2

The population of Austin, Texas in 1980 was 346,000 people. The population in 1990 was 472,000 people. What is the rate of change of the population with respect to the year for this function?

Answers

Answer:

12.6 thousand a year

Step-by-step explanation:

take the 346 add 126 thousand to it equaling a good 472 thousand divide 126 thousand by 10 cause it is a ten year span that equals you get 12.6 thousand.

I need brainliest please

We want to find the rate of change of the population of Austin, Texas in the years between 1980 and 1990.

The answer is: r = 12,600 people/year.

We will assume that this increase in population is modeled with a linear equation, remember that a general linear equation is:

y = a*x + b

Where the rate of change, or slope, is a.

We know that if a line passes through two points (x₁, y₁) and (x₂, y₂) the slope is given by the formula:

[tex]a = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

For this case we have two points, these are:

(1980, 346,000)

(1990, 472,000)

Then the slope or rate of change is just:

[tex]a = \frac{472,000 - 346,000}{1990 - 1980} = 12,600[/tex]

To be complete we need to add the correspondent units, which are people per year.

Then the rate of change is:

r = 12,600 people/year.

If you want to learn more, you can read:

https://brainly.com/question/18904995

please help i don't understand. will mark brainliest. answer the both questions

Answers

Answer:

1-Undefined

2-Positive

Step-by-step explanation:

Answer:

The slope of a vertical line will always be 0

A graph with a negative slope increases from right to left

Step-by-step explanation:

what is 35.6 multiplied by 4.9.

Answers

Answer:

Step-by-step explanation:

35.6×4.9

=174.44

Answer is 174.44

Answer:

174.44

Step-by-step explanation:

35.6 x 4.9 = 174.44

  356 (take away decimal)

x    49 (take away decimal)

17,444

Don't think 17,444 is our final answer. We still have to add the decimal places. Since there was two decimals in both numbers, we add two decimals places. So:

17,444 turns into 174.44

Final Answer:

174.44

Hopefully this helps! Sorry if wrong. You are loved, and you are beautiful/handsome!

-Bee

Quadrilateral Q’R’S’T is a dilation if quadrilateral QRST, with the origin as the center of dilation.

What appears to be the scale factor used to create this dilation?

4

0.5

2

0.25

Answers

0.5 I think I hope I’m right

The body of a 154-pound person contains approximately 2×102 milligrams of gold and 6×103 milligrams of aluminum. Based on this information, the number of milligrams of aluminum in the body is how many times greater than the number of milligrams of gold in the body?

can you show your work too?

Answers

Answer:

2 x 1 0^2 and  6 x 10^

Step-by-step explanation:

Hope I helped

Brainliest plz :)

Is this right? I chose the last 3. Please read all of them though.

Answers

Answer:

Yes that is correct

Step-by-step explanation:

The two opposite vertices of a square
are (-2, 2) and (1, -1). What are the other two vertices of the square?

Answers

Answer:

(-2, -1), and (1, 2)

Step-by-step explanation:

i made a grid and i made a square with the -2, 2 and 1, -1.

What is 2 8 10 +(−3.5) in decimal form? Show your work

Answers

Answer:

2806.5

Step-by-step explanation:

Mark me as brainliest

it's 2806.5 because i multiplied

Can someone help me please

Answers

Answer:

The slope is  [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

If you graph out the points on a line, you can clearly see that the rise between the points on the graph is 2, while the run is 4. This would give you [tex]\frac{2}{4}[/tex], so if you simplify the fraction, you would get [tex]\frac{1}{2}[/tex].

Select all the correct answers.
Terry is an up-and-coming florist who specializes in weddings. He uses 5 roses, 3 daisies, and 4 bundles of green filler to make one bouquet. If r is the cost of a rose, d is the cost of a daisy, and f is the cost of a bundle of green filler, which expression represents the cost for making 75 bouquets?
75r +75d + 75f + 12
(5r + 3d + 4f) + 75
75(5r) + 75(3d) + 75(4f)
75(5r + 3d + 4f)

Answers

Answer: The last two are right

Step-by-step explanation: 75x5= $375, 75x3=$225, 75x4=$300.

Add all the sums together and you will get the cost of 75 bouquets, which is $900. - NUMBER 3

5+3+4=12, 12x75=$900

Sorry if I'm wrong first time doing this.

Answer:

option (4) is correct. 75( 5r + 3d + 4f ) expression represents the cost for making 75 bouquets.

Step-by-step explanation:

Given: r is the cost of a rose, d is the cost of a daisy, and f is the cost of a bundle of green filler.

Terry uses 5 roses, 3 daisies, and 4 bundles of green filler to make one bouquet.

Thus, cost of one bouquet = cost of each flower used × number of flower used.

Total cost of one bouquet= 5r+3d+4f

Thus, cost for making 75 bouquets = 75 × cost of one bouquet

= 75( 5r + 3d + 4f )

Thus, option (4) is correct. 75( 5r + 3d + 4f ) is the correct expression to represents the cost for making 75 bouquets

The shaded area of the picture shows what part of the yard Rashon mowed in 15 minutes. He wonders how long it will take him to mow the whole yard.

How long will it take Rashon to mow the entire yard?


30 mins.




60 mins.



90 mins.

180 mins.

Answers

Answer:60

Step-by-step explanation:

60 because I’m big brain

Triangle ABC is dilated to produce triangle A ' B ' C' with scale factor of 3/4. Which describes the relationship between the two triangles?

A - Triangle A ‘ B ‘ C’ is an enlargement of triangle ABC

B - Triangle A ‘ B ‘ C’ is a reduction of triangle ABC

C - Triangle A ‘ B ‘ C’ is congruent to triangle ABC

D - Triangle A ‘ B ‘ C’ is a mirror image of triangle ABC

Please answer this question correctly. Please

Answers

B. Triangle A’B’C is a reduction of triangle ABC.

Explanation: Since the scale factor is smaller then one it would be a reduction.
Maybe B?........................

5(−3.4k−7)+(3k+21) find the sum

Answers

Answer:

-14k - 14

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Combining Like Terms

Step-by-step explanation:

Step 1: Define expression

5(-3.4k - 7) + (3k + 21)

Step 2: Simplify

Distribute 5:                         -17k - 35 + 3k + 21Combine like terms (k):       -14k - 35 + 21Combine like terms (Z):       -14k - 14

Answer:

−14k−14

Step-by-step explanation:

View attached picture!

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Solve and then tell how many solutions there are. 4v – 13 – 10v = 12 – 24v + 5 + 18v

Answers

there are no solutions

{0,1,-3}
---------------------------
-3 -2 -1 0 1

0n the number line.

Answers

Answer:Whats the question?

Ya what’s the question

A restaurant orders corn tortillas and flour tortillas. The ratio of the number of corn tortillas to the number of flour tortillas is 2 : 3. What is the ratio of the number of flour tortillas to the total number of tortillas?
3 : 8

3 : 5

2 : 8

2 : 5

Answers

Answer:

The answer  is 3:5

Step-by-step explanation:

Since the Ratio is to flour tortillas to total, we already know that the number of flour tortillas is 3.  

The total number is 5. If you add up both flour tortillas and corn tortillas the total number would be 5.

The ratio would be 3:5

Corn to flour
2:3
Flour to total
3:5
You answer is 3:5

help im not good with fractions!!!

Randy has 2/3 of a bag of candy left. He has 3 friends he wants to give his leftovers to. If he splits the remaining 2/3 of a bag among his 3 friends equally, what part of the bag will each friend get?

Answers

2/9 because I know that’s it

Answer:

2 please follow me fast and vote me

Step-by-step explanation:

2/3*3

= 6/3

= 2

whats 2+2+2+2+2+2+2 idk know i do but someone wants 200 so ur welcom

Answers

14 ty for the points lol

Answer: 14

Step-by-step explanation:

Following the principle of PEMDAS, 2+2/2*2–2 will be calculated as 2+[(2/2)*2]-2, that is 2+[1*2]-2 and followed by (2+2)-2 which is 4–2 and the result is 2. As we know about BODMAS rule i.e brackets of division multiplication addition subtraction.

plz mark brainlest

A local donut shop sells a dozen donuts for $8.64 . At this rate , how much would 14 donuts cost ?

Answers

Answer:

10.08

Step-by-step explanation:

8.64 divided by 12 is 0.72

then you multiply .72 by 14 and you get

10.08

10.08 is the answer. you simply divide the cost by the dozen which is 12, then you times it by the amount of donuts

k + 9 = 17

What does k value?
k=8
k=9
k=17
k=26

Answers

Answer:

8

Step-by-step explanation:

k + 9 = 17

subtract 9 from both sides:

k = 8

Answer: k=8 so I guess A haha

Step-by-step explanation:

you would just subtract 9 from each side so 17-9= 8 and boom.

You’re welcome :)

I need help with this. Someone told me that the answer was 52 but idk how to explain how I got it. Can you please help me out. THANK YOU SO MUCH IF YOU DO!

Part A: James bought a cake that weighs 3 and 1 over 4 pounds. How many ounces does the cake weigh? Show your work. (5 points)

[16 ounces = 1 pound]

Answers

Answer:

3 pound cake=48 ounces)4 pound cake=64 ounces

Step-by-step explanation:

[16 ounces = 1 pound]-so you got this

James bought a cake that weighed over 4 pounds.

And one that is 3 pounds,so you wanna multiply 16 x 3 and you get 48

So that leaves the 3 pound cake to be 48 ounces

Just like the first one,you wanna multiply 16 x 4 and you get 64

It is 52 because:
16 oz. are in every 1 lb., so we multiply
3 x 16 which gives you 48.
Adding the 1/4, 1/4 of 16 is 4, so add 4 to 48.
There’s your answer, hope I helped!

How do I do Distance Formula? Here is the equation ( or equations I don't know if it is a equation or 2 different ones) that I need help with
They are late and I need to turn them in [tex]C(-5, -3), D(-4, -2)\\K(8 1/2, 12), L( -63/4, 7 1/2)[/tex]

Answers

Answer: view image below

Step-by-step explanation:

Hope this helps you, love!

Answer:

c and d = square root of 26 or 5.09901 in decimal

k and l = square root of 59461/2 or 60.9615 in decimal

Step-by-step explanation:

hope this helps:))

Mrs. Nygaard’s class has 12 boys and 14 girls. She asked the class members if they prefer a field trip to the local zoo or to an aquarium. She set up a two-way table to summarize the results. Which could describe the row and column headings for Mrs. Nygaard’s table? gender and field trip preference gender and number of students who prefer the aquarium number of boys and number of students who prefer the aquarium number of girls and field trip preference

Answers

Answer:

A.)  gender and field trip preference

Step-by-step explanation:

got it right on edge2020

Answer:

A.gender and field trip preference

Step-by-step explanation:

Just did test

An arithmetic sequence has a first term of 8 and sixth term of 38. What is the 50th term of this sequence?

Answers

Answer:

74

Step-by-step explanation:

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