MATHEMATICS HIGH SCHOOL

Charlotte measured the temperature at 7:00 A.M. and again at 3:00 P.M. She placed both measurements on a number line.How did the temperature change between 7:00 A.M. and 3:00 P.M.?

A.
It increased by °C.


B.
It decreased by °C.


C.
It increased by °C.


D.
It decreased by °C.

Answers

Answer 1
Answer:

It is increasing because at 7: A.M the temperature is colder and instead at 3: P.M the temperature rises (sorry for the grammar)
Answer 2
Answer:

Answer: C, 11 and 3/4

Step-by-step explanation:

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A skier has decided that on each trip down a slope, she will do 2 more jumps than before. On her first trip she did 6 jumps. Derive the sigma notation that shows how many total jumps she attempts from her fourth trip down the hill through her twelfth trip. Then solve for how many total jumps she attempts from her fourth trip down the hill through her twelfth trip.I tried to answer, but I don't really know how to even set it up... :/

Answers

The correct answers are:

Explanation:

Since she is adding two more jumps every time she goes down hill, this is an arithmetic sequence. The general form of an arithmetic sequence is

Since we want the number of jumps on her 4th through 12th trips, we will set n in the summation from 4 to 12. n=4 goes at the bottom of Σ and 12 goes at the top, to represent the values we are interested in.

Beside this, we write our general form. The first term is 6 and d, the common difference, is 2. This gives us 6+2(n-1) beside the summation:

\Sigma_(n=4)^(12) 6+2(n-1)

To evaluate this, we substitute the values 4, 5, 6, 7, 8, 9, 10, 11 and 12 in for n, adding all of the values together:

6+2(4-1)+6+2(5-1)+6+2(6-1)+6+2(7-1)+6+2(8-1)+6+2(9-1)+6+2(10-1)+6+2(11-1)+6+2(12-1)

=6+6+6+8+6+10+6+12+6+14+6+16+6+18+6+20+6+22

=180
I'll just manually compute this one. Every attempt she will add 2 more jumps.

Attempt           Jumps       Accumulated Jumps
1                          6                         6
2                          8                       14
3                         10                      24
4                         12                      36
5                         14                      50
6                         16                      66 
7                         18                      84
8                         20                    104
9                         22                    126
10                       24                    150
11                       26                    176
12                       28                    204

Total jumps from 4th trip through 12th trip: 204 - 24 = 180 jumps

What is .73 repeating as a fraction

Answers

Answer:

The decimal 0.73 repeating is equal to 73/99

Step-by-step explanation:

This is because the repeating 3 is in the hundredths place, so we put it over 99

8+4i
———
2i

please show work!!

Answers

Please brainliest this what Siri said

A circle is centered at the point (-3, 2) and passes through the point (1, 5). The radius of the circle is ______ units. The point (-7, ______) lies on this circle.How would I do this?

Answers

circle formula
(x-h)^2+(y-k)^2=r^2 where (h,k) is the center
and r=radius

to find the radius
we are given one of the points and the center
distnace from them is the radius
distance formula
D=\sqrt{(x2-x1)^(2)+(y2-y1)^(2)}
points (-3,2) and (1,5)
D=\sqrt{(1-(-3))^(2)+(5-2)^(2)}
D=\sqrt{(4)^(2)+(3)^(2)}
D=√(16+9)
D=√(25)
D=5

center is -3,2
r=5
input
(x-(-3))^2+(y-2)^2=5^2
(x+3)^2+(y-2)^2=25 is equation
radius =5
input -7 for x and solve for y
(-7+3)^2+(y-2)^2=25
(-4)^2+(y-2)^2=25
16+(y-2)^2=25
minus 16
(y-2)^2=9
sqqrt
y-2=+/-3
add 2
y=2+/-3
y=5 or -1

the point (-7,5) and (7,-1) lie on this circle



radius=5 units
the points (-7,5) and (-7,1) lie on this circle

Which polynomial identity will prove that 64+27=91

Answers

Add 64 and 27 and you will get 91 So the problem will read: 64+27=91 91=91

Answer:

Sum of cubes

Step-by-step explanation:

How many lines of symmetry does the letter S have?

Answers

The letter S in the alphabet does not have any lines of symmetry. Therefore, the answer to this question is: Zero (0). This is because letter S is not symmetrical when it is cut or divided into 2 parts.
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