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olga_2 [115]
4 years ago
10

On a map, the distance between two cities is 4.3 centimeters. If the map scale is 1 cm = 25 km,

Mathematics
1 answer:
stira [4]4 years ago
6 0
The real distance is 107.5km
You might be interested in
Numbers to add
Sindrei [870]

Answer:

1. 5

2. 10

3. 15

4. 5

5. 475

6. 15

7. 479/5

8. 479/5

9. -5

10. 459

Step-by-step explanation:

you multiply them and then subtract.

5 0
3 years ago
Find the slope of the line that passes through each pair of points.
ICE Princess25 [194]
Answer: 4/7
This is a fraction

---------------------------------------------------

The two points are (x1,y1) = (2,3) and (x2,y2) = (9,7)

Which breaks down to these four facts
x1=2
y1=3
x2=9
y2=7

Plug those values into the slope formula below and simplify
m = (y2 - y1)/(x2 - x1)
m = (7 - 3)/(9 - 2)
m = 4/7

The slope is 4/7

Side Note: slope = rise/run = 4/7 so rise = 4 and run = 7. Meaning that each time we go up 4, we also go to the right 7

7 0
4 years ago
How many combinations of pennies (1 cent), nickels (5 cents) and/or dimes (10 cents) are there with a total value of 25 cents?
Dmitriy789 [7]
Hello ,
there are 12 combinations

 num           x             y             z
 1             0             1             2
 2             0             3             1
 3             0             5             0
 4             5             0             2
 5             5             2             1
 6             5             4             0
 7             10            1             1
 8             10            3             0
 9             15            0             1
 10            15            2             0
 11            20            1             0
 12            25            0             0

 



DIM x AS INTEGER, y AS INTEGER, z AS INTEGER, k AS INTEGER
'OPEN "c:\nosdevoirs\monnaie.sol" FOR OUTPUT AS #1
k = 0
FOR x = 0 TO 25
    FOR y = 0 TO 5
        FOR z = 0 TO 3
            IF x + 5 * y + 10 * z = 25 THEN
                k = k + 1
                PRINT k, x, y, z
'                PRINT #1, k, x, y, z

            END IF
        NEXT z
    NEXT y
NEXT x
'CLOSE #1
END


7 0
3 years ago
4x+3y=12
77julia77 [94]

Answer:

B, C, F

Step-by-step explanation:

Given:

\left\{\begin{array}{l}4x+3y=12\\ \\2x+3y=-6\end{array}\right.

Subtract the second equation from the first equation:

(4x+3y)-(2x+3y)=12-(-6)\\ \\4x+3y-2x-3y=12+6\\ \\2x=18\\ \\x=9

Option B "The x coordinate of the solution is 9" is ture

Substitute it into the first equation:

4\cdot 9+3y=12\\ \\36+3y=12\\ \\3y=12-36\\ \\3y=-24\\ \\y=-8

Option F "The y coordinate of the solution is -8" is true.

Point (9,-8) is in the IV quadrant, so option C is true.

8 0
3 years ago
Find the distance between (8,-4,7) and (8,5,3)
Tems11 [23]

Answer:

sqrt(97)

Step-by-step explanation:

Since the x for both of the points are the same, we can reduce the problem to "find the distance between (-4, 7) and (5, 3)".

To do that, we can use the Pythagorean theorem, where <em>(change in x)^2+(change in y)^2 = (distance)^2:</em>

(5-(-4))^2+(3-7)^2=d^2

(9)^2+(-4)^2=d^2

81+16=d^2

97=d^2

d=sqrt(97).

4 0
3 years ago
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