MATHEMATICS HIGH SCHOOL

Robert stands atop a 1,380-foot hill. He climbs down, reaching the bottom of the hill in 30 minutes. What is Robert’s average rate of elevation change in feet per minute?+460
+46
-46
-460

Answers

Answer 1
Answer: Before we calculate we can use some common sence thinknig to narrow down the choices. We know that Robert is gonig DOWN the hill, so it doesnt make sence that he woudl have a positive rate of change (i.e. the number feet up the hill he is is decreasing, not increasing) So right away, A & B are clearly wrong.

If we look at the last two (C & D) we can see that if -460 were right after 10 minutes he would have walked down 4,600 feet. This is WAY more that the total height of the hill and so can't be correct.

So C must be correct.

We can check this with some simple math:
rate = (end-start)/(time) = (0ft-1380ft)/(30mins)= -46(ft)/(min)
Answer 2
Answer:

Answer:

i got c for the answer

Step-by-step explanation:

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Evaluate: f(x) = -2x + 6 for x = 10.

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Answers

answer is b hope this helps

85% of what number equals 17

Answers

percent means parts out of 100
85%=85/100=0.85
'of' means multiply

therefor
85% of x equals 17 means
0.85 times x=17
divide both sides by 0.85
x=20



the number is 20

What does | 3+i | equal

Answers

The straight lines are asking to find the modulus or the size of the complex number.
For a complex number  z = x + iy,  [z] = √(x^2 +y^2)
Where x = Real Number, y = Imaginary number.
For 3 +i,  x = 3, y = 1    (Note y is what number that is attached to i)

[3 + i] = √(3^2 +1^2) = √10 = 3.162

A music festival offers one-day and three-day passes. A one day pass costs $100 and a three-day pass costs $250. write an expression for the total ticket sales if (n) one day passes and (t) three day passes are sold.

Answers

The expression for the total ticket sales if (n) one day passes and (t) three day passes are sold is n + t = $350.

What is an expression?

An expression is a number, or a variable, or a combination of numbers and variables and operation symbols.

Now it is given that,

Cost of one-day passes, n = $100

Cost of three-day passes, t = $250

So, Total ticketssold = Cost of one-day passes + Cost of three-day passes

⇒ Total ticketssold = n + t

⇒ n + t = $100 + $250

⇒ n + t = $350

which is the required expression for total tickets sold.

Thus, the expression for the total ticket sales if (n) one day passes and (t) three day passes are sold is n + t = $350.

To learn more about expressions :

brainly.com/question/21798279

#SPJ2

Answer:

100n+250t

Step-by-step explanation:

cost of the1 one day pass=100

cost of n one day passes=100n

cost of the 1 three day pass=250

cost of t three day passes=250t

Total sale= 100n+250t

A student wrotw a variable expression n-5 for the word phrase n less than 5. explain the students error

Answers

Less than does mean minus, but when the question says less than some number, that number goes first. should have written 5-n

Which two numbers add up to ___ and multiply to ___?1. multiply to -18 add to -17
2. multiply to 36 add to -13
3. multiply to -24 add to -5
4. multiply to -18 add to 7
5. multiply to -36 add to 9
6. multiply to 24 add to 10
7. multiply to 18 add to -9
8. multiply to -36 add to -16

I need help ASAP!

Answers

Ok so let's start :)

Ok so first one, numbers need to add to -17 AND multiply to -18
First of all you need to check the signs which stands near to those numbers. As you see there is (-) next to both of them, it means that ONLY one number needs to be with (-) sign. Why? There is short "instruction" which you need to remember:

(-)*(-)=(+)
(-)*(+)=(-)

If there are to signs next to each other, you can "change" them using "rules" below ;P

(-)+(-)=(+)
(-)+(+)=(-)

So it is possible to add two numbers with (-) sign next to them which would be equal to -17 (for example -5+(-12) but it is impossible to find two numbers which have (-) sign next to them which will give you also negative number after multiplication :)

Ok it's enough theory for now, it should be much easier now :D

1. So you can multiply 1*-18 which is -18
Also -18+1 which is -17

Rules above should help you to understand what I did below :) In case of any questions you can help me anytime :)

It's quite simple :)

1. \ \boxed{-18\ AND\ 1}\ because\ -18+1=-17\ AND\ (-18)*1=-18

2. \ \boxed{-9\ AND\ -4}\ because\ -9+(-4)=-13\ AND\ (-9)*(-4)=36

3. \ \boxed{-8\ AND\ 3}\ because\ -8+3=-5\ AND\ (-8)*3=-24

4. \ \boxed{9\ AND\ -2}\ because\ 9+(-2)=7\ AND\ 9*(-2)=-18

5. \ \boxed{12\ AND\ -3}\ because\ 12+(-3)=9\ AND\ 12*(-3)=-36

6. \ \boxed{6\ AND\ 4}\ because\ 6+4=-10\ AND\ 6*4=24

7. \ \boxed{-6\ AND\ -3}\ because\ -6+(-3)=18\ AND\ (-6)*(-3)=18

8. \ \boxed{-18\ AND\ 2}\ because\ -18+2=-16\ AND\ -18*2=-36
It's quite simple :)
1. -18\ \&\ 1 because -18+1=-17 AND (-18)*1=-18
2. -9\ \&\ -4 because -9+(-4)=-13 AND (-9)*(-4)=36
3. -8\ \&\ 3 because -8+3=-5 AND (-8)*3=-24
4. 9\ \&\ -2 because 9+(-2)=7 AND 9*(-2)=-18
5. 12\ \&\ -3 because 12+(-3)=9 AND 12*(-3)=-36
6. 6\ \&\ 4 because 6+4=-10 AND 6*4=24
7. -6\ \&\ -3 because -6+(-3)=18 AND (-6)*(-3)=18
8. -18\ \&\ 2 because -18+2=-16 AND -18*2=-36
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