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3 years ago

Please help, if you do not know do not answer please!

Mathematics

2 answers:

Paul [167]3 years ago

6 0

Answer:

1,3 are functions

2,4 are not

Ad libitum [116K]3 years ago

4 0

Answer:

Relation 1 & 3 are function

Relation 2 & 4 are not function.

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The military academy is placing cadets in rows for the parade. All rows must have the same number of cadets. If A company has 64

scoray [572]

Answer:

Step-by-step explanation:

If we find the average for both companies, it is 72, therefore there are two rows each with 72 cadets

4 0

2 years ago

Read 2 more answers

The function f(x) = –x2 + 20x – 75 models the profit from one customer, in dollars, a shop makes for printing photos, where x is

trasher [3.6K]

The function is graphed as shown below

Part A:

We use the formula $- \frac{b}{2a}$ to find the vertex of the function. A quadratic function of the form of $a x^{2} +bx+c$ and equating this form to the given function $- x^{2} +20x-75$ , we have
$b=20$ and $a=-1$ .

Substituting $a$ and $b$ into the vertex formula, we have
$x=- \frac{20}{2(-1)}=10$ , as shown in the graph

This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos

Part B:

We can find solution to this equation by factorising

$- x^{2} +20x-75=0$
$-( x^{2} -20x+75)=0$
$x^{2} -20x+75=0$
$(x-5)(x-15)=0$
$x=5$ and $x=15$ , as shown in the graph

The two values means that the company makes no profit when they either produce 5 or 15 photos

8 0

3 years ago

Minas time for running the mile 9.4 minutes. If her friends ran the mile in 11.02 minutes, how much faster was Mina?

MrMuchimi

First you would subtract Minas friends mile time from Minas mile time.
11.02-9.4
Mina is 1.62 minutes faster than her friend

5 0

3 years ago

If eggs cost $3 per dozen. how much would 8 eggs cost?

weeeeeb [17]

12 eggs = $3
8 eggs = (8÷12) × $3

hope this was helpful! :)

3 0

3 years ago

Read 2 more answers

PLEASE ANSWER AS SOON AS POSSIBLE!

Tcecarenko [31]

The y- intercept has to be a point in the line where x is 0. Which means that in this case it would be -4.
To find the slope, use the formula: rise over run —> y2 - y1/x2 - x1
Choose any two coordinates and plug them in. Then simplify. Let me know if you have any questions by commenting:)
Hope I helped:)

6 0

3 years ago