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Readme [11.4K]
3 years ago
5

marion is twice as old as judy . six years ago marion was three times as old as judy was then . find the age of each girl now

Mathematics
1 answer:
fomenos3 years ago
4 0

Answer:

we mutiply marion age because it is twice

i thick marion is old then judy

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Please. Help me solve this
nikklg [1K]

Answer:

1 < a < 13/5

Step-by-step explanation:

2 < 2a - 3(1 -a) < 10

2 < 2a - 3 + 3a < 10

2 < 5a - 3 < 10

2 + 3 < 5a - 3 + 3 < 10 + 3

5 < 5a < 13

5/5 < 5a/5 < 13/5

1 < a < 13/5

5 0
3 years ago
write an equation to represent the relationship "a number decreased by negative 2 is equal to 21."Then solve the equqtion
Debora [2.8K]
X - (-2) = 21 <== ur equation
x + 2 = 21
x = 21 - 2
x = 19
8 0
3 years ago
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The mean temperature for the first 7 days in January was 6 °C.
balandron [24]

Answer:

6.875° C

the mean of a set of data is calculated using

mean =

For the first 7 days the mean is 8 and the count = 7

8 =  ( cross- multiply )

sum = 8 × 7 = 56

Add on the temperature on the 8 th day to the sum and divide by 8 for mean

sum = 56 - 1 = 55

mean =  = 6.875° C

2nd question

Height of marble from the ground

An independent variable is the variable in an experiment that you change to see if it has an effect on the dependent variable. In this case, Jack wanted to see whether the position of the marble on the ramp (which would be the height) has an effect on the kinetic and potential energy of the marble, then the height would be the independent because it is what is being changed.

The dependent would be the kinetic and potential energy and the constant would be the type of marble.

3 0
3 years ago
7 over 8 devided by 19
Tasya [4]

Answer:

7/152

or 0.046

6 0
3 years ago
!!HELPPP!!Drag each label to the correct location on the figure. Not all labels will be used.
wlad13 [49]

Answer:

it is 46 ,101,79,59 starting from left side angle

6 0
3 years ago
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