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melamori03 [73]
2 years ago
8

Select the equivalent expression. 2^-4 = ?​

Mathematics
1 answer:
mrs_skeptik [129]2 years ago
7 0

Answer:

1/16

Step-by-step explanation:

This means 1/2x2x2x2  = 1/16

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Out of students appeared in an examination 75% passed in English, 55%. passed in Mathematics, 5% failed in both subjects and 21
rusak2 [61]

Based on the percentage that passed English and those who passed Mathematics and those who failed and passed both, the total number of students who appeared in the examination are 60 students.

The number of students who passed only in Math are 12 students.

<h3>What number of students sat in the exam?</h3>

This can be found as:

= Total who passed English only + Total who passed Math only + Total who failed both + Total who passed both

Assuming the total is n, the equation becomes:

n = 0.75n - 21 + 0.55n - 21 + 21 + 0.05n

n = 1.35n - 21

21 = 0.35n

n = 21 / 0.35

= 60 students

The number who passed mathematics only is:

= (60 x 55%) - students who passed both

= 33 - 21

= 12 students

Find out more on Venn diagrams at brainly.com/question/24581814

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4 0
1 year ago
PLEASE HELP ASAP GIVING 100 POINTS
Inessa [10]

Answer:

3.98 meters

Step-by-step explanation:

First we need to know the formula for finding the height of a cylinder

h=\frac{V}{\pi r^2}

Now That we know our formula, we just need to put in our numbers and simplify

h=\frac{5000}{\pi 20^2}

h=\frac{5000}{1256.637}

h=3.97887

4 0
2 years ago
Is there any app which helps solve pure maths questions?​
allochka39001 [22]

Answer:

math a app good luck with the question

4 0
2 years ago
Heyy! i’ll give brainliest please help
nydimaria [60]
The answer is absolute dictator
8 0
3 years ago
Plz help me and answer right
azamat
I think it might be 30 but I don’t know
3 0
3 years ago
Read 2 more answers
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