Unit 8 homework 2 special right triangles

Answers

Answer 1
what grade you in ? Because we can help eachother !!

Related Questions

−6p=48

Help a kid out

Answers

Answer:

p = -8

Step-by-step explanation:

-6p = 48

divide both sides by -6

p = -8

Is −5 a solution to the equation 6 + 5 = 5 + 8 +2? PLS HELP

Answers

Answer:

it is false

Step-by-step explanation:

Answer:

False

Step-by-step explanation

6+5 ?= 5+8+2

11≠15

False

With this equation it was asking you is 6+5 equal to 5+8+2

and the answer is no, false.

The cost of 3 boxes of envelopes and 4 boxes of notebook paper is $13.25. Two boxes of envelopes and 6 boxes
of notebook paper cost $17. Find the cost of each. 8.
(Need step by step please!)

Answers

Answer:

Step-by-step explanation:

E for Envelopes

N for Notebook Paper

3E + 4N = $13.25

2E + 6N = $17

N = $2.45

E = $1.15


Increase £55 by 37%
Give your answer rounded to 2 DP.

Answers

Answer:

75.35

Step-by-step explanation:

I hope this helped

An account is gaining value rate of 4.94 per year. The account held $113 in 2005 which statement is "false"

A. The account had 124.44 in 2007.

B. The account gained more money from 2013-2015 than it did 2005-2007.

C. The account gains $5.72 every year.

D. This relationship is an example of exponential growth.

Answers

Answer:

d

Step-by-step explanation:

The false statement is option (d) This relationship is an example of exponential growth.

What is Slope?

Slope of a line is the ratio of the change in y coordinates to the change in the x coordinates of two points given.

The graph shows the value in the account after 2005.

0 indicates the year 2005.

1, 2, ...... indicates 2006, 2007, etc.

A) The value in 2007 corresponds to value of 2, which is 124.44.

True statement.

B) From 2013-2015 means that x values from 8 to 10.

Value of money during 2013-2015 = 180 - 166.19 = 13.81

From 2005-2007 means that x values from 0 to 2.

Value of money during 2005-2007 = 124.44 - 113 = 11.44

So Value of money during 2013-2015 is greater than that of 2005-2007.

True statement.

C) To find the amount account gained per year, find slope.

Slope = Change in y coordinates / Change in x coordinates

Take two points on the line (0, 113) and (2, 124.44)

Slope = (124.44 - 113) / (2 - 0) = 5.72

Hence the account gains $5.72 every year.

True statement.

D) Clearly the function is linear since the graph is a straight line.

Hence this is not a exponential growth.

Hence D is the false statement.

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What number is 56% of 400? Show ALL of your work.

Answers

Answer: 224

Step-by-step explanation:

56% is the same as saying (56/100). When finding a percent of a number, you’re really setting up a ratio with the value x:

(56/100)=(x/400)

Then you just cross multiply:

(56 x 400)/100=x

x=224

36 is 80% of what number?


Enter your answer in the box

Answers

Answer:

36 is what percent of 80? = 45.

Answer:

45

Step-by-step explanation:

46/80%

pretty simple I hope this helps you

The distance traveled by a toy car can be modeled by D(t) = t3 − 3t2 + t − 3, where t > 3 represents time in seconds. If the car traveled for t − 3 seconds, identify the expression that represents the speed of the toy car.

Answers

Answer:

[tex]t^2+1[/tex]

Step-by-step explanation:

We are given that

Distance traveled by a toy car

[tex]D(t)=t^3-3t^2+t-3[/tex]

Where t>3

Time taken by car =t-3 seconds

We have to find the expression which represents the speed of the toy car.

We know that

[tex]Speed=\frac{Distance}{time}[/tex]

Using the formula

[tex]Speed=\frac{(t^3-3t^2+t-3)}{t-3}[/tex]

[tex]Speed=\frac{t^2(t-3)+(t-3)}{t-3}[/tex]

[tex]Speed=\frac{(t-3)(t^2+1)}{t-3}[/tex]

[tex]Speed=t^2+1[/tex]

Hence, the expression  which represents the speed of the toy car

[tex]t^2+1[/tex]

The expression  that represents the speed of the toy car is [tex]t^2 + 1[/tex].

The calculation is as follows:

Given that,

The distance traveled should be [tex]D(t) = t^3 - 3t^2 + t - 3[/tex]

Here t>3

Time taken by car = t -3 seconds

Now the expression should be

[tex]Speed = Distance \div time\\\\= ( t^3 - 3t^2 + t - 3) \div (t - 3)\\\\= t^2(t - 3) + (t - 3) \div (t - 3)\\\\= (t - 3) (t^2 + 1) \div (t - 3)\\\\= t^2 + 1[/tex]

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Which value of y makes the inequality 3y^2+2(y-5)>8 true


A y=0
B y= -1
C y= -2
D y= -3

Answers

Answer:

Conclusion:

As y = -3 MAKES the inequality TRUE.

Therefore, option D i.e. y = -3 is true.

Step-by-step explanation:

Given the inequality

3y² + 2(y - 5) > 8

For y = 0

substitute y = 0 in the inequality

3y² + 2(y - 5) > 8

3(0)² + 2(0 - 5) > 8

3(0) + 2(-5) > 8

0 - 10 > 8

-10 > 8

FALSE!

-10 can not be greater than 8.

Hence, y = 0 does not make the inequality true.

For y = -1

substitute y = -1 in the inequality

3y² + 2(y - 5) > 8

3(-1)² + 2(-1 - 5) > 8

3(1) + 2(-6) > 8

3 - 12 > 8

-9 > 8

FALSE!

-9 can not be greater than 8.

Hence, y = 1 does not make the inequality true.

For y = -2

substitute y = -2 in the inequality

3y² + 2(y - 5) > 8

3(-2)² + 2(-2 - 5) > 8

3(4) + 2(-7) > 8

12 - 14 > 8

-2 > 8

FALSE!

-2 can not be greater than 8.

Hence, y = -2 does not make the inequality true.

For y = -3

substitute y = -3 in the inequality

3y² + 2(y - 5) > 8

3(-3)² + 2(-3 - 5) > 8

3(9) + 2(-8) > 8

27 - 16 > 8

11 > 8

TRUE!

11 is indeed greater than 8.

Hence, y = -3 MAKES the inequality TRUE.

Conclusion:

As y = -3 MAKES the inequality TRUE.

Therefore, option D i.e. y = -3 is true.

Answer:

D

Step-by-step explanation:

Solve the following equations:
A) 3x = 15
B) y + 7 = 13​

Answers

Answer:

x=5

y=6

Step-by-step explanation:

a) 3x=15

      /3

x=5

b) y+7=13

      -7

y=6

Simplify the linear expression by subtracting,
(9x - 8) - (x +4)
O 10x -4
O 10x + 12
O 8x -12
-3x

Answers

The answer is x = 1.5

What is the value of X?

Answers

Answer:

x=12°

Step-by-step explanation:

180 - 90 = 4x - 2° + 3x + 8 °

90°= 7x + 6

90° - 6 = 7x

7x = 84

x= 84/7

x = 12

Please help me graph
Y=1.5x
Will mark brainliest!!

Answers

Thank you! The line should pass through points (2,3), (4,6), (6,9), (8,12)

Hi can someone help me plz??????

Answers

the bottom pointy part should be at (-4,0) i think

Seven people are going to share an 84-ounce bottle of soda. How many ounces will each person get to drink? Choose the correct equation and answer for this situation. I THINK THIS IS ABOUT RASIOS SO PLS HELP

Answers

Answer:

7 ÷ 84 = 84 = 12 ounces

             _

             7

Step-by-step explanation:

The equation will be 7x = 84. Then the number of ounces will each person get to drink will be 12.

What is the linear system?

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

Seven people are going to share an 84-ounce bottle of soda.

Let x be the number of the ounces bottle of soda of each person.

Then we have the equation will be

7x = 84

 x = 84 / 7

 x = 12

Then the number of ounces will each person get to drink will be 12.

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What is the value of f(-1/4)?

Answers

Answer:

i think its -0.25

Step-by-step explanation:

i dont really ave an explanation a just used a calculator

Please help quick

10 points

Answers

Answer:

[tex]y = x - 1[/tex]

:))))))))))

Answer:

-1

Step-by-step explanation:

the line goes through the y axes and it goes over -1 as it passes

Jayla has 500 stickers in a collection. She wants at least y stickers in her collection at the end of the month. She buys 25 stickers each day. Write an inequality tha
number of days. Enter your answer in the box provided.

Answers

Answer:

20

Step-by-step explanation:

500 divided by 25=20

The required inequality is 500 + 25x ≥ y which represents the given situation.

What is inequality?

Inequality is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are not equal.

Let x be the number of days Jayla buys stickers.

The total number of stickers Jayla has at the end of the month is 500 + 25x.

To represent the inequality that Jayla wants at least y stickers in her collection at the end of the month, we can write:

500 + 25x ≥ y

This inequality states that the total number of stickers Jayla has (500 + 25d) is greater than or equal to the number of stickers she wants (y) at the end of the month.

It gives the minimum number of days Jayla should buy stickers to achieve her goal.

Learn more about inequalities here:

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Select all the correct tables.
This table gives information on types of rooms occupied at a hotel in a day.

King Bed Queen Bed
Mountain View 25 18
Ocean View 12 20

Identify the tables that represent the relative frequencies of this data by rows or by columns. Round your answers to the nearest hundredth.

Answers

Answer:

the middle left and right

The table representing the relative frequencies by rows would be:

                    King Bed     Queen Bed

Mountain 0.58       0.42

Ocean         0.38             0.62

The table representing the relative frequencies by columns would be:

                King Bed Queen Bed

Mountain      0.68             0.47

Ocean       0.32             0.53

What is a relative frequency?

Relative frequency is a statistical term that describes the proportion or percentage of times that an event or value occurs within a dataset or sample.

It is calculated by dividing the number of times the event occurs by the total number of observations in the dataset or sample.

We have,

To find the relative frequencies of this data by rows or by columns, we need to divide each count by the total number of rooms occupied. The total number of rooms occupied is:

25 + 18 + 12 + 20 = 75

To find the relative frequencies by rows, we divide each count by the total for that row:

For Mountain View rooms:

King Bed: 25/(25+18) ≈ 0.58

Queen Bed: 18/(25+18) ≈ 0.42

For Ocean View rooms:

King Bed: 12/(12+20) ≈ 0.38

Queen Bed: 20/(12+20) ≈ 0.62

The table representing the relative frequencies by rows would be:

                    King Bed     Queen Bed

Mountain 0.58       0.42

Ocean         0.38             0.62

To find the relative frequencies by columns, we divide each count by the total for that column:

For King Bedrooms:

Mountain View: 25/(25+12) ≈ 0.68

Ocean View: 12/(12+20) ≈ 0.38

For Queen Bedrooms:

Mountain View: 18/(18+20) ≈ 0.47

Ocean View: 20/(18+20) ≈ 0.53

The table representing the relative frequencies by columns would be:

                King Bed Queen Bed

Mountain      0.68             0.47

Ocean       0.32             0.53

Note that we round the relative frequencies to the nearest hundredth.

Thus,

The table representing the relative frequencies by rows and columns is given above.

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Please help meee. Look at te box

Answers

Answer:

(-4,0)

Step-by-step explanation:

If y=0 that means substitute the y into the top equation as 0. 0=x+4, subtract 4 on both sides. x=-4. Now we know y is 0 and x is -4 so the coordinate point is (-4,0). Hope this helps!

A mechanic charges $20.00 an hour, h for labor plus parts. If the parts cost $217.00, write a linear equation that will find the total cost, c. ​

Answers

Answer:

y=20x+217

Step-by-step explanation:

Pls help semester ends to day pls help with both 16 and 17

Answers

Answer:

Step-by-step explanation:

16. -73.5 ft / 3 min = -24.5 ft/min

17. ($50.25 - $22.50 + $50.25 - $22.50 - $22.50) / 5 = $33 / 5 = $6.60

Answer:

16.-73.5÷3=-24.5 feet per minute

17.(50.25-22.5+50.25-22.5-22.5)÷5=6.6

You are paid $82.50 for 712 1/2 hours of work. What is your rate of pay?

Answers

Answer:

11.6 cents per hour.

Step-by-step explanation:

To find the rate per hour we divide the money paid by the number of hours: $82.50/712 = $0.116 per hour or 11.6 cents per hour.

Answer: 11.6 cents per hour.

Step-by-step explanation:

Divide the polynomials.
Your answer should be a polynomial.
22 - 71 +12
I-3

Answers

Answer:

x - 4

Step-by-step explanation:

Brian can iron 3 shirts in 5 minutes. If Brian irons at a constant rate, how many shirts can he iron in 30 minutes? WILL GIVE BRANLIEST

Answers

Answer:

18

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

30/5 = 6

6 * 3 = 18

(06.01)
Solve the following system of equations and show all work.

y = x2 + 3
y = x + 5

Answers

By substitution
2x+3 = x+5
2x-x=5-3
X=2

And y=2(2) +3
Y=7

tan 235° = 2tan20°+ tan215°​

Answers

Given :  tan 235 = 2 tan 20 + tan 215

To Find : prove that

Solution:

tan 235 = 2 tan 20 + tan 215

Tan x = Tan (180 + x)

tan 235 = tan ( 180 + 55) = tan55

tan 215 = tan (180 + 35) = tan 35

=> tan 55 = 2tan 20 + tan 35

55 = 20 + 35

=> 20  = 55 - 35

taking Tan both sides

=> Tan 20 = Tan ( 55 - 35)

=> Tan 20  = (Tan55 - Tan35) /(1 + Tan55 . Tan35)

Tan35 = Cot55 = 1/tan55 => Tan55 . Tan35 =1

=> Tan 20  = (Tan 55 - Tan 35) /(1 + 1)

=> Tan 20  = (Tan 55 - Tan 35) /2

=> 2 Tan 20  = Tan 55 - Tan 35

=> 2 Tan 20 +  Tan 35 = Tan 55

=>  tan 55 = 2tan 20 + tan 35

=>  tan 235 = 2tan 20 + tan 215

QED

Hence Proved

Salim bought a fruitcake, cut off a piece from it, and ate the piece. The dimensions of the cake before and after he cut it, are shown below. What was the volume of the piece that Salim ate?

Answers

Answer:

C. 75 cu cm

75 cm³

Step-by-step explanation:

Volume of the cake when Salim bought it = length × width × height

= 15 cm × 6 cm × 5 cm

= 450 cm³

Volume of the cake after Salim cut a piece = length × width × height

= 12.5 cm × 6 cm × 5 cm

= 375 cm³

volume of the piece that Salim ate = Volume of the cake when Salim bought it - Volume of the cake after Salim cut a piece

= 450 cm³ - 375 cm³

= 75 cm³

volume of the piece that Salim ate = 75 cm³

which expression is equivalent to 3 x 3 x 3 x 3

Answers

Answer:

I can’t c anything where are the answers we’re choosing ?

Step-by-step explanation:

Answer:

raise 3^4 and ans is 81 or u can simply multiply.

can you help me plz

Tim and Kevin each sold candies and peanuts for a school fund-raiser. Tim sold 16 boxes of candies and 4 boxes of peanuts and earned $132. Kevin sold 6 boxes of peanuts and 20 boxes of candies and earned $190. Find the cost of each.

Answers

Answer:

Tim's Cost of the box of candy: 7$ for one box

Tim's Cost for the peanuts: $5 for one box

Kevin's Cost for the candy is: $8 for one box

Kevin's Cost for the peanuts are: $5 for one box

Step-by-step explanation:

Tim:

7x16=112

5x4=20

112+20=132

Kevin:

20x8= 160

5x 6=30

160+30 =190

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