A street light is 21 feet high and casts a 40-foot shadow. At the same time, a cell-phone
tower next to the street light casts a 57-foot shadow. Which proportion can be used to find
the height, H, of the cell-phone tower?

For Number one: -xy + 2x = 20, x = 5

To solve this, all we need to do is plugin 5 for every place we have x. So...

- (5)y + 2(5) = 20

-5y + 10 = 20

-5y = 10

y = -2

For number two: 4x - 3y - 10 = 1, x = -1

To solve this, we need to plugin -1 for all of the x variables. So...

4 (-1) - 3y - 10 = 1

-4 - 3y - 10 = 1

-14 - 3y = 1

-3y = 15

y = -5

For number three: 5x + 7y = -1, x = 4

We need to plugin -4 for all of the x variables. So...

5 (4) + 7y = -1

20 + 7y = -1

7y = -21

y = -3

For number four: x = 6 + xy, x = -3

Same as the other ones, just plugin -3 for all of the x variables. So...

-3 = 6 + (-3)y

-3 = 6 - 3y

-9 = -3y

3 = y

I hope this helps :)

Answer:

See below

Step-by-step explanation:

square root of 0.2 is around 0.4472 . . .

square root of 0.4 is around 0.6324 . . .

so, if we are ordering them from least to greatest, the order will go as follows:

1. 0.2

2. 0.4

3. square root of 0.2 (0.4472...)

4. square root of 0.4 (0.6324...)

Answer:

28 ft = 9 yd and 1 ft

Answer:

Part 1 is the 16 square feet

Part 2 is the 128 cube feet

Box 1

x - y = 4

x - 0 = 4

x = 4

Box 2

x = 4

y = 0

(x, y) => (4, 0)

Box 3

x - y = 4

-1 - y = 4

-y = 4 + 1

y = -5

Box 4

x = 0

y = -4

(x, y) => (0, -4)

Answer:

i think its 120

sorry if it might be incorrect

????

Answer: Point W is the answer.

Step-by-step explanation:

Answer:

the answer is w

Step-by-step explanation:

x is 2

y is -5.5

Answer:

x(3y - 1) and (2a - 3)(2a + 3)

Step-by-step explanation:

(1)

3xy - x ← factor out x from each term

= x(3y - 1)

(2)

4a² - 9 ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b) , then

4a² - 9

= (2a)² - 3²

= (2a - 3)(2a + 3)

Answer:

a=9

Step-by-step explanation:

Answer:

b=-12

Step-by-step explanation:

Answer:

question 1 = -4,-2

question 2= you already did it

question 3= do 56+672

question 4= 24 gallons

question 5=28 miles per gallon.

Step-by-step explanation:

to answer this we simply have to divide the miles driven by Chad (308 miles ) by the number of gallons used (11 gallons). Chad's car gets 28 miles per gallon.

hope this helped :b

Answer:

The measure of m∠KNY is;

(D) 105°

Step-by-step explanation:

From the diagram, we have;

The given angle at the circumference = The The angle the arcs makes at the center of the circle

From circle, theorem, angle subtended at the center = Twice the angle subtended at the circumference

Therefore;

Angle ∠D and angle ∠Y = 90°/2 = 45°

Angle ∠O and angle ∠K = 60°/2 = 30°

From angle summation theorem, we have;

m∠KNY + ∠K + ∠Y = 180° (The sum of the interion angles in ΔYNK

∴ m∠KNY = 180° - (∠K + ∠Y)

Plugging in the known values of ∠K and ∠Y gives;

m∠KNY = 180° - (30° + 45°) = 105°

m∠KNY = 105°.

Answer:

The Fourth one

[tex]f(x) = {5}^{x} [/tex]

Step-by-step explanation:

I hope that is useful for you :)

The scatter plot is solved a graph has year on the x-axis, and contribution on the y-axis, from 50,000 to 500,000. Points are at (1, 70,000), (3, 150,000), (5, 190,000), (8, 230,000), (11, 270,000), (14, 290,000).

Dots are used in a scatter plot to show the values of two different numerical variables. Each dot's location on the horizontal and vertical axes represents a data point's values. To view relationships between variables, utilize scatter plots.

The closer the data points come to forming a straight line when plotted, the higher the correlation between the two variables, or the stronger the relationship. If the data points make a straight line going from near the origin out to high y-values, the variables are said to have a positive correlation.

Using end behavior, turning points, intercepts, and the Intermediate Value Theorem, plot the graph of a polynomial function.

Given data ,

Let the scatter plot represents the funds raised by a TV station since its first year of operations

Let the number of years be represented as x

Let the contribution be represented as y

where the values of x and y are

x = { 1 , 3 , 5 , 8 , 11 , 14 }

y = { 70000 , 150000 , 190000 , 230000 , 270000 , 290000 }

The scatter plot is graphed and the linear regression equation is

y = 15901.6x + 88688.5

Hence , the scatter plot for the contribution for x years is plotted

To learn more about scatter plot click :

https://brainly.com/question/29231735

#SPJ3

Answer:

x = 12 cm

Step-by-step explanation:

Based on the tangent and secant theorem,

8² = 4(4 + x)

Solve for x

64 = 16 + 4x

Subtract 16 from both sides

64 - 16 = 4x

48 = 4x

Divide both sides by 4

48/4 = 4x/4

12 = x

x = 12

Answer:

4067

Step-by-step explanation:

Answer:

I believe A is the right answer

Step-by-step explanation:

Answer:

question 2 is i know its not an option but its 0.075

question 1 is 0.0556

Step-by-step explanation:

i took the quiz and got it right.

Answer:

X=24

Step-by-step explanation:

3x+5+2x-4+2x+11=180

7x+12=180

7x=180-12

7x=168

7x/7=168/7

x=24

Answer:

its -2

Step-by-step explanation:

like my answer and gimme brainliest please

Answer:

equation is -3x+4

Step-by-step explanation:

function is linear because x is always constant

Answer:

7.76

Step-by-step explanation:

theres not really an explanation just add them and you'll get the answer

Answer:

7.79

Step-by-step explanation:

 4.56

+3.23

_____

 7.79

Hope this helps    :)

Answer:

It was most likely Tyler who researched it as his range of books is much larger than that of Felix.

Step-by-step explanation:

From the bar graph to the box and whisker plot, the right is always the one with more variety just as in the first plot that was shown.

hope this helps :D

ps: please don't copy it you won't get nearly as good a grade if you do that other than to just take inspiration from it.

Step-by-step explanation:

plz don't forget to add sentences

....