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Ann [662]
3 years ago
12

Find the distance between points P(3, -8) and Q(7, 4). Round to the nearest tenth if necessary.

Mathematics
2 answers:
raketka [301]3 years ago
7 0

Answer:

Step-by-step explanation:

igor_vitrenko [27]3 years ago
5 0

Answer:

what i dont under sand

Step-by-step explanation:

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Need help step by step​
shusha [124]
Y = mx + b

8x - 4y - 9 = 0

first you move the nine to the other side of the equal sign (add nine to both sides)

8x - 4y = 9

then you need to also move your 8x over to the other side as well (remember we are trying to get y by itself!)

- 4y = -8x + 9

then we are going to divide -4 to both sides

and you get

y = 2x - 9/4

we can then identify the slope as 2

so B. 2 would be your answer

hope this helped
3 0
3 years ago
Using the dot plot, describe the members of the math
MAVERICK [17]
One club member is 9 years old, one is 11 years old, two are twelve years old and four are fourteen years old.
5 0
3 years ago
Read 2 more answers
A cylinder has a volume of 384 cubic inches and a height of 8 inches, what is the radius
Triss [41]
The answer is:  3.91 inches .
___________________________________________

Note:  Volume of cylinder: V = (base area) * (height);

in which: V = volume = 384 in.³ ;
              h = height = 8 in. ; 
              Base area = area of the base (that is; "circle") = π r² ;
                                         in which; "r" = radius; 
___________________________________________
Solve for "r" :
___________________________________________
 V = π r² * (8 in.) ; 

384 in.³ = (8 in.) * (π r²) ;
___________________________________________
Divide EACH SIDE of the equation by "8" ; 
___________________________________________
 (384 in.³) / 8 = [ (8 in.) * (π r²) in.] / 8 ; 
___________________________________________
 to get: 
___________________________________________
   48 in.³ = (π r²) in.² * in.   ;
___________________________________________
 ↔  (π r²) in.² * in. =  48 in.³  ;  
___________________________________________
Rewrite this equation; using "3.14" as an approximation for: π ;
__________________________________________________
 (3.14 * r²) in.² * in. =  48 in.³ 
_______________________________________
Divide EACH SIDE of the equation by:

"[(3.14)*(in.²)*(in.)]" ;  to isolate "r² " on one side of the equation; 
                                 (since we want to solve for "r") ;
_____________________________________________________
→ [(3.14 * r²) in.² * in.] / [(3.14)*(in.²)*(in.)]  = 48 in.³ / [(3.14)*(in.²)*(in.)] ; 
__________________________________________________
→ to get:   r² = 48/3.14 ;
________________________
      → r² = 15.2866242038216561 ;
_______________________________________
To solve for "r" (the radius; take the "positive square root" of EACH side of the equation:
__________________________________________________
     → +√(r²) = +√(15.2866242038216561)
__________________________________________________
     →  r = 3.9098112747064475286  ; round to 3.91 inches .
___________________________________________________
4 0
3 years ago
Read 2 more answers
A number between 1 and 3 is chosen 30 times. The results are shown in the table below. What is the experimental probability of p
Fudgin [204]
The chances of picking an even number(a number that’s not odd) would be 1 out of 3
5 0
3 years ago
PLEASE HELP ASAP ALGEBRA 2 QUESTION
Jlenok [28]
Let x represent the gallons of water that is 10% salt.

Let y represent the gallons of water that is 25% salt.

Now, write the system of equations:

x + y = 10

.10x +.25y = 0.20 • 10


1) To make the system easier to solve, multiply all the terms in .10x +.25y = 0.20(10) by 100 to make them integers.

10x + 25y = 20 • 10

10x + 25y = 200   

2) Solve for x.

x + y = 10

x = 10 - y

3) Substitute x with 10 - y in the other equation.

10(10 - y) + 25y = 200

100 - 10y + 25y = 200

Combine like terms.

100 + 15y = 200

Subtract 100 from both sides.

15y = 100  

y = 20/3 or 6 2/3

4) Now that we have the numerical value of y, solve for the value of x by substituting once more.

a) x + y = 10

x + 20/3 = 10 or x + 6 2/3 = 10 (either equation is fine)

x = 10/3 or x = 3 1/3

The manager should combine 3 1/3 (3.33) gallons of 10% salt water and 6 2/3 (6.67) gallons of 25% salt water.

5) Always check the answers to make sure.

a) x + y = 10

3 1/3 + 6 2/3 = 10

9 3/3 = 10

10 = 10

b) .10x +.25y = 0.20 • 10

.10(3 1/3) +.25(6 2/3) = 0.20 • 10

1/3 + 5/3 = 2

6/3 = 2

2 = 2
7 0
3 years ago
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