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g100num [7]
3 years ago
11

What is the slope of the line that passes through the points (5, 4) and (13.25, -18) ?

Mathematics
1 answer:
Murrr4er [49]3 years ago
7 0

Answer:

<u>Answer</u><u>:</u><u> </u><u>D</u><u>.</u><u> </u><u>8</u><u>/</u><u>3</u>

Step-by-step explanation:

Formular for slope:

[ consider points (x1, y1) and (x2, y2) ]

slope =  \frac{y_{2}  - y _{1} }{x _{2} - x _{1} }  \\

x1 » 5, y1 » 4

x2 » 13.25, y2 » -18

sloe =  \frac{ - 18 - 4}{13.25 - 5}  \\  \\  =  \frac{22}{8.25}  \\  \\ { \boxed{ \boxed{slope \:  =  \frac{8}{3} }}}

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Find x, y and z for the following triangle. ​<br>Please show the steps with details, Thanks!
Lubov Fominskaja [6]

Answer:

x = 100°

y = 125°

z = 55°

Step-by-step explanation:

A straight line is 180°

A triangle is 180°

Solve in this order:

X: 180 - 80 = 100

Z: 180 - 80 - 45 = 55

Y: 180 - 55 = 125

5 0
3 years ago
Here is my question i need help answering it
ollegr [7]
Ur answer will be C… basically u make the equation equal to zero and then use the quadratic formula to find ur answers…. x = -3 and 9
5 0
2 years ago
Joel made egg sandwiches and tuna sandwiches in the ratio 2:3. He then made 15 more tuna sandwiches and the ratio changed to 1:3
Aleksandr [31]

Answer:

40 sandwiches

Step-by-step explanation:

egg sandwiches : tuna sandwiches

 2                         : 3

Multiply by x  because we do not know how many sandwiches, just the ratio

2x                       : 3x


Add 15  tuna sandwiches

2x                       : 3x+15

Now the ratio is 1:3


egg sandwiches : tuna sandwiches

 1                         : 3

Multiply by y  because we do not know how many sandwiches, just the ratio

y                           : 3y


Set the number of egg sandwiches equal

2x =y

then set the number of tuna sandwiches equal

3x+15 = 3y

We know have a system of 2 equations and 2 unknowns

Substitute y =2x into the second equation

3x+15 = 3(2x)

Distribute

3x+15 = 6x

Subtract 3x from each side

3x-3x+15 = 6x-3x

15 =3x

Divide by 3

15/3 = 3x/3

5 =x


egg sandwiches : tuna sandwiches

 2                         : 3

Multiply by x  because we do not know how many sandwiches, just the ratio

2x                       : 3x

2*5                        3*5

10                             15


He originally made 10 egg sandwiches and 15 tuna sandwiches

Then he made 15 more tuna sandwiches

The total number of sandwiches he made is

10+15+15 = 40 sandwiches  




5 0
3 years ago
Help asap plz ill give a gold medal. the label on cars antifreeze claims to protect the car between -30celsius and 130celsius. t
irga5000 [103]
The inequality would start out looking like this:
-30\ \textless \  \frac{5}{9} (F-32)\ \textless \ 130
Now it's just a matter of solving the inequalities simultaneously. Get rid of the fraction by multiplying everything by 9:
-270\ \textless \ 5(F-32)\ \textless \ 1170
Then distribute the 5 into the parenthesis:
-270\ \textless \ 5F-160\ \textless \ 1170
Now add 160 everywhere:
-110\ \textless \ 5F\ \textless \ 1330
and finally divide everything by 5:
-22<F<266


4 0
3 years ago
PLS HELP ME ASAP FOR 8. A and B (SHOW WORK!!) (for graph PLS use pic) LOTS OF POINTS!
lilavasa [31]
10 books cost $30. To figure it out, it's just 3 times the number of books. XD
3 0
3 years ago
Read 2 more answers
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