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LiRa [457]
2 years ago
11

Setting 7/3 equal to which ratio would result in a valid proportion? 9/49 18/42 42/18 49/9​

Mathematics
1 answer:
Vinvika [58]2 years ago
5 0
49/9 because if you simplify it, it would be 7/3 which is equal to the original ratio.
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The scores on a math test are normally distributed with a mean of 64 and a standard deviation of 8. Tara scored 52 on the test.
Dvinal [7]
A z-score<span> is the number of standard deviations from the mean a data point is.
</span>
Standard deviation explains by how much the members of a group differ from the mean value for the group.
Using the z-score formula:
                                           z = ( x  - μ ) ÷ σ
Where;
            x = score
            μ = Mean
            σ = Standard deviation 

Z- Score (Tara) = ( 52 - 64 ) ÷ 8
                         = - 12 ÷ 8
                         = - 1.5 

Z- Score (Jamal)  = ( 82 - 64 ) ÷ 8
                             = 18 ÷ 8
                             = 2.25 

Z- Score (Samuel) = ( 66 - 64 ) ÷ 8
                               = 2 ÷ 8
                               = 0.25
6 0
2 years ago
Please answer correctly !!!!!! Will mark brainliest !!!!!!!!!!!!!
Leni [432]

Answer:

At the time of launch height of the object was 60 meters.

Step-by-step explanation:

An object was launched from a platform and its height was modeled by the function,

h(x) = -5x² + 20x + 60

Where x = time or duration after the launch

At the time of launch, x = 0

So, by putting x = 0 in this equation,

h(0) = -5×(0) + 20×(0) + 60

h(0) = 60

Therefore, at the time of launch height of the object was 60 meters.

4 0
3 years ago
Which decimal is equivalent to 2/9?<br> A. 2.2<br> B. 2.9<br> C. 22222<br> D. 0.2
goldenfox [79]

Answer:

The answer is 0.2. It is an irrational number with a repeating 2. It should have a line over the two to represent it repeating.

Step-by-step explanation:

First divide 2 by 9.

Use a calculator or do it by hand.

You get your answer.

3 0
3 years ago
Read 2 more answers
Ron started the day with a score of +12.
Naily [24]

+ 12 - 4 + 3 - 15

= 12 + 3 - 4 - 15

=     15   -   19

= - 4

8 0
2 years ago
Read 2 more answers
What is the slope of the line?
Sergeu [11.5K]

Answer:

1

Step-by-step explanation:

\frac{rise}{run}=slope

\frac{1}{1} =1

therefore the slope is 1

plz mark me brainliest. :)

5 0
2 years ago
Read 2 more answers
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