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mariarad [96]
2 years ago
15

A map is drawn using a scale of 40 kilometers to 1 centimeter. The distance between two cities is 300 kilometers. How far apart

are the two cities on the map? ​
Mathematics
1 answer:
Morgarella [4.7K]2 years ago
8 0

Answer:

7.5 cm

Step-by-step explanation:

40:1

× by 7.5 to get 300 km so do the same to the other side (1) and you get 7.5 cm

sorry if its incorrect

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Multiply This Expression: -10 ( -a + 5 )
Dovator [93]
You would use distribution. So, in this case, it would be 10a - 50. You use -10 to multiply -a and 5, and you get 10a, and -50.
4 0
3 years ago
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The product of 3 consecutive even integers is equal to the cube of the first plus the square of the second plus twice the square
algol [13]

Answer:

6, 8 and 10  and  -2, 0, 2

There are two roots x = -2 and 6,    

but the since I don't believe 0 is an even number the answer is 6, 8 and 10

I was incorrect according to G0ggle zero is an even number so another answer is  -2, 0, 2

Step-by-step explanation:

read the question and convert the English to mathematics

x, y and z    even consecutive number

y = x+2

z = y+2 = x+4

and

xyz = x³ + y² + 2z²                                   substitiute x terms  in for y and z

x(x+2)(x+4)  = x³ + (x+2)² + 2(x+4)²           solve for x by graphing on DEMOS

                                                                 x = -2, 6  solved algebraically below

x = -2   y=0   z=2

x = 6    y=8   z=10

Checked both answers

xyz = x³ + y² + 2z²

-2(0)2 = -8 + 0 + 8                  when x = -2

   0   =  0

and

6(8)(10)  =  6³ + 8² +2(10)²      when x = 6

   480   =  216+64+200

             =  480

x(x+2)(x+4)  = x³ + (x+2)² + 2(x+4)²                           solved algebraically

(x²+2x)(x+4)   = x³ + x² +4x +4 + 2x² + 16x + 32

x³ + 6x² + 8x = x³ + x² +4x +4 + 2x² + 16x + 32

x³ + 6x² + 8x = x³ + 3x² + 20x + 36

      3x² - 12x - 36 = 0         factor out the 3

      3[x² - 4x - 12] = 0

       3(x+2)(x-6) = 0     x = -2 and -12

6 0
2 years ago
Need help for 12 please​
igomit [66]

Ummmm where is it? I dont see 12

8 0
2 years ago
1. Jane went shopping and bought a shirt for $27, a skirt for $32, and a pair of shorts for $14. Choose the answer that is the b
Natasha2012 [34]

Answer:

70

Step-by-step explanation:

First add the tens: 20 + 30 + 10= 60

Now add the Ones: 7 + 2 + 4= 13

now add them all together: 60+13=73

so the best estimate is 70

                                         Your Welcome

5 0
3 years ago
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Solve for x: -5/6(8+-5/3x)=-10
Anon25 [30]
X=-2 2/5
X=-2.4
X=-12/5
6 0
3 years ago
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