Someone plz help meeee

Mathematics

2 answers:

Mekhanik [1.2K]3 years ago

5 0

Answer:

B.) 20.020

C.) 20.02

D.) 20.2

Step-by-step explanation:

2 x 10 = 20

2 x 1/100 + 20 = 20_1/50

20 x 50 + 1 = 1001

1001/50 = 20.02

20.2 (the 0 does not need to be there because the answer is the same without it.)

20.020 (the last 0 does not need to be there because the answer is the same without it.)

Shkiper50 [21]3 years ago

3 0

Step-by-step explanation:

b and c

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4a + 6b= 10 2a - 4b =12 what does 12a=

mixer [17]

4a + 6b = 10
2a - 4b = 12...multiply by -2
----------------
4a + 6b = 10
-4a + 8b = - 24 (result of multiplying by -2)
------------------add
14b = - 14
b = -14/14
b = -1

2a - 4b = 12
2a - 4(-1) = 12
2a + 4 = 12
2a = 12 - 4
2a = 8
a = 8/2
a = 4

so 12a = 12(4) = 48 <==

3 0

3 years ago

On the grid draw a scaled copy of quadrilateral ABCD with a scale factor 2/3

Tamiku [17]

Answer:

Attached diagram A'B'C'D'

Step-by-step explanation:

Given is a quadrilateral ABCD. It says to draw a dilated version with a scale factor 2/3.

We see that scale factor is less than 1 which means it shrinks the image to a smaller one.

To draw a scaled copy, we need to find the lengths of its sides.

To do so, we can draw the diagonals AC & BD, and they intersect at origin O(0,0) such that OA= -2, OB= 2, OC= 4, OD= -4.

Applying a scale factor of 2/3, we get OA' = -4/3, OB' = 4/3, OC' = 8/3, OD' = -8/3.