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3 years ago

Which table represents a proportional relationship that has a constant of proportionality equal to 0.8?

Mathematics

2 answers:

dybincka [34]3 years ago

4 0

Answer:

correct answer is B

Step-by-step explanation:

Otrada [13]3 years ago

3 0

The correct answer is the second answer choice.

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The 9th graders are selling tickets to raise money for a class field trip. They are selling student tickets for $5 and adult tic

Marina CMI [18]

Answer:

Total number of adult tickets sold = 10

Total Number of Students tickets sold = 30

Step-by-step explanation:

Let $x$ be the number of student tickets sold.

Let $y$ be the number of adult tickets sold.

As per the question statement, total tickets sold are 40.

$x +y =40 ...... (1)$

Price of each student ticket = $5

Sales from students' tickets = Price of each students ticket $\times$ Number of students tickets sold

Sales from student's tickets = 5 $\times x$

Price of each adult ticket = $9

Sales from adult's tickets = Price of each adult's ticket $\times$ Number of adult tickets sold

Sales from student's tickets = 9 $\times y$

Total sales is done by students and adult tickets is $240 as per the question statement.

$\Rightarrow 5x + 9y = 240 ......(2)$

Solving equations (1) and (2) using elimination method:

Equation $(2) - 5 \times (1)$ :

$5x + 9y -5x-5y = 240-200\\\Rightarrow 4y = 40\\\Rightarrow y =10$

Total number of adult tickets sold = 10

Putting $y=10$ in equation (1):

$x+10 = 40\\\Rightarrow x = 30$

Total number of students tickets sold = 30

Total number of adult tickets sold = 10

Total Number of Students tickets sold = 30

8 0

4 years ago

1. A rectangle has a length of 15 centimeters and a width of 8

Ksivusya [100]

Answer: radius = 6.18 (I don't know what solutions you have, but the actual answer for the radius is about 6.18 cm so which ever is closest.)

Step-by-step explanation:

the area of a circle is \pi r^{2}

*rewrite your equation solving for radius

r=\sqrt{A/\pi } =\sqrt{120/\pi } = 6.18

6 0

3 years ago

Can u guys answer these 2 questions for me w/ work shown and also label the ones u guys did so I won’t get them mixed up

almond37 [142]

Answer:

The answer for number 9 is 11 and number 11 the answer is 6.

Step-by-step explanation:

9) x + 8 -y, use x = 20 and y=17

First, plug in your numbers for each variable.

20 + 8 - 17

Then, use PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction) to solve your equation which in this case goes straight across like this.

20 + 8 = 28 - 17 = 11.

11) 10 - x + y divided by 2; use x=5 and y=2

Once again, plug in your numbers.

10 - 5 + 2 divided by 2

In this problem, you do the division first which brings you to:

10 - 5 + 1

Then, you subtract and then add to get your answer of 6.

10 - 5 = 5 + 1 = 6.

6 0

3 years ago

True or False: A trapezoid is a polygon that has two bases, each with a different length.

elixir [45]

……….Yes it is true that trapezoid is a polygon that has two bases

8 0

3 years ago

Read 2 more answers

How high is the ramp?

Vinil7 [7]

Answer:

Step-by-step explanation:

it's a right triangle so we can use the pythagorean theorem to find h

pythagorean theorem: a^2+b^2=c^2

h^2+19^2=21^2

h^2+361=441

h^2=80

h≈ 8.9ft

6 0

3 years ago

Read 2 more answers