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jeyben [28]
2 years ago
5

Can somebody help me with these 3 problems

Mathematics
1 answer:
kirill [66]2 years ago
7 0
I suggest downloading the app “conects”
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2<br>Decrease R420 in the ratio 4:7​
Oxana [17]

Step-by-step explanation:

Let the numbers are 4x and 7x. According to the question if each number is increased by 20, the ratio becomes 7 : 9.

Then,

( 4x + 20 ) : ( 7x + 20 ) = 7 : 9

9( 4x + 20 ) = 7( 7x + 20 )

9( 4x ) + 9( 20 ) = 7( 7x ) + 7( 20 )

9( 20 ) - 7( 20 ) = 7( 7x ) - 9( 4x )

2( 20 ) = 49x - 36x

40 = 13 x

40 / 13 = x

Therefore, number are :–

4 x = 4( 40 / 13 ) = 160 / 13

7 x = 7( 40 / 13 ) = 280 / 13

4 0
3 years ago
A square pyramid has a base side length of 8 feet. The height of each lateral face is 12 feet. What is the surface area of the p
iragen [17]
I am not sure but answer can be 1,5 or 96 and ir Can be wrong but ı am trying to help you
3 0
3 years ago
nikki has four clients and each appointment is 90 minutes how long will it take her to serve four clients​
Masteriza [31]

Answe360

Step-by-step explanation

If you multiply 90 by 4, you get 360 think of it as for groups with 90 in them.

8 0
2 years ago
The sum of three consecutive integers is −42. find the three integers.
erica [24]
Let the integers be x - 1, x and x + 1, then
x - 1 + x + x + 1 = -42
3x = -42
x = -42/3 = -14

The three consectutive integers are -15, -14 and -13
4 0
3 years ago
I need help asp
Fynjy0 [20]

Answer:

3627

Step-by-step explanation:

assuming it is 13*(-32.48-14.02)*6

4 0
3 years ago
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