2x+y=-2
5x+3y=-8
Solve the following systems

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

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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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

Answer:

x - 4

Step-by-step explanation:

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

Answer:

75.35

Step-by-step explanation:

I hope this helped

Answer:

18

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

30/5 = 6

6 * 3 = 18

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:

Answer:

i think its -0.25

Step-by-step explanation:

i dont really ave an explanation a just used a calculator

Answer:

x=5

y=6

Step-by-step explanation:

a) 3x=15

      /3

x=5

b) y+7=13

      -7

y=6

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.

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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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

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.

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

Answer:

p = -8

Step-by-step explanation:

-6p = 48

divide both sides by -6

p = -8

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].

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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Answer:

d yes that is the correct answer

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

Answer:

36 is what percent of 80? = 45.

Answer:

45

Step-by-step explanation:

46/80%

pretty simple I hope this helps you

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.

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Answer:

5

Step-by-step explanation:

8 = y + 3

5 + 3 = 8

Therefore y = 5

Answer:

y = 5

8=y+3

8-3=y+3-3

5=y

hope it's helpful ❤❤❤❤

THANK YOU.

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

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

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.

Answer:

y=20x+217

Step-by-step explanation:

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

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: