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goldfiish [28.3K]
3 years ago
7

the athletics department paid $1,417.50 for all the dinners at the spring sports banquet. If each dinner cost $13.50,how many we

re purchased?
Mathematics
2 answers:
stealth61 [152]3 years ago
8 0
<span>The athletics department paid $1,417.50 for all the dinners at the spring sports banquet. If each dinner cost $13.50,how many were purchased?

A. 105</span>
umka2103 [35]3 years ago
5 0
Hi this is my first time on brainly.com can someone tell me how this works


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The dimensions of a rectangle are 20' by 40'. If a model rectangle with a scale of 5' = 10'' is to be made, find the dimensions
VMariaS [17]

20’ / 5’ = 4

4 x 10” = 40”

40’ /5’ = 8

8 x 10” = 80”

Scaled dimension: 40” x 80”

6 0
3 years ago
Which statements are true?<br>(look at picture)​
Makovka662 [10]

Answer:

D is true, E is true, F is true

Step-by-step explanation:

Hello,

n is an odd number it means that n = 2a+1 where a is integer

A

n^2-1=(2a+1)^2-1=4a^2+4a+1-1=4a(a+1)

this is <u>not</u> an odd number

B

n(n-1)=(2a+1)2a

this is <u>not</u> an odd number

C

(n-1)^2=(2a+1-1)^2=4a^2

this is <u>not</u> an odd number

D

n^2+2=(2a+1)^2+2=4a^2+4a+1+2=4a^2+4a+3= 2(2a^2+2a+1)+1

so this is an odd number

E

n(n-2)=(2a+1)(2a-1)=4a^2-1=4a^2-2+1=2(2a^2-1)+1

so this is an odd number

F

(n-2)^2=(2a+1-2)^2=(2a-1)^2=4a^2-4a+1 = 2(2a^2-2a)+1

this is an odd number

hope this helps

7 0
3 years ago
Try Solve<br> 4/7 + -8/9 + -5/21 + 1/3 = ???
erica [24]

Answer:

hey:)

the answer is -8.11

there is no step-by-step explanation, because you have to either do it with a calculator or do it by yourself

8 0
3 years ago
Read 2 more answers
Carley owns an ice cream stand. She wants to predict how many ice cream cones she will sell as a function of the average daily h
Degger [83]

Answer:

can you show me the data so i can see the temperature

7 0
3 years ago
Read 2 more answers
Train tracks are made of metal. Consequently, they expand when it's warm and shrink when it's cold. When riding in a train, you
Nadya [2.5K]

The height of the triangle that forms the train track is 145,38 ft

<h3>How to calculate the height of the triangle?</h3>

To calculate the height of the triangle we must take into account the information provided by

  • Base of the triangle = 1 mile = 5280 feet
  • Railroad track expansion = 8 feet

According to the above, we must perform the following operations:

  • 5280 ÷ 2 = 2640
  • 8 ÷ 2 = 4
  • 2640 + 4 = 2644

Subsequently, we must apply the Pythagorean theorem to find the height of the triangle having 2 data:

  • Base: 2640ft
  • Hypotenuse: 2644 ft

  • 2644² = x² + 2640²
  • x² = 2644² - 2640²
  • x = \sqrt[2]{2644^{2} + 2640^{2}}.
  • x = \sqrt[2]{21137}
  • x = 145,38 ft

That makes x approximately 145,38 ft.

Learn more about triangles in: brainly.com/question/2269348

4 0
2 years ago
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