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poizon [28]
3 years ago
6

Out of 40 students in class 8,20% were absent.How many students were present?​

Mathematics
1 answer:
Alenkasestr [34]3 years ago
3 0

Understanding:

The total number of students is 40. 8.20% of them were absent, which means the rest were present, or in other words, (100-8.20)% were present or 91.8%. We can find the actual number of present students by multiplying the percentage of present students by the total number of students.

Solution:

Present Percentage = 91.8% or \frac{91.8}{100}

Present Students = (\frac{91.8}{100})(40)=36.72, since we are dealing with people we have to round it, so the present students are actually 37.

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Find X and y<br><br> 12, 16
zavuch27 [327]

Answer:

  • x = 6√2
  • y = 6√6

Step-by-step explanation:

The triangles are all similar, so corresponding sides are proportional.

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<h3>x</h3>

  long side/short side = x/6 = 12/x

  x² = 72 . . . . . . . multiply by 6x

  x = 6√2 . . . . . . take the square root

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<h3>y</h3>

  hypotenuse/long side = y/12 = (12+6)/y

  y² = 216 . . . . . multiply by 12y

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8 0
2 years ago
Given: F(x) = 5x - 6 and G(x) = x - 4
fomenos

Answer:

Correct choice is \dfrac{x+26}{5}

Step-by-step explanation:

1. If F(x)=5x-6, then you can find the inverse F^{-1}(x):

y=5x-6,\\ \\5x=y+6,\\ \\x=\dfrac{y+6}{5},\\ \\F^{-1}(x)=\dfrac{x+6}{5}.

2. If G(x)=x-4, then

y=x-4,\\ \\x=y+4,\\ \\G^{-1}(x)=x+4.

3. Hence,

G^{-1}(F^{-1}(x))=G^{-1}\left(\dfrac{x+6}{5}\right)=\dfrac{x+6}{5}+4=\dfrac{x+26}{5}.

7 0
3 years ago
Ms hills travels 2400 miles at a rate of 400 miles per day to visit her grandchild . Write and solve an equation to find the num
Naya [18.7K]

It Would Take her 6 days

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6 0
3 years ago
A rectangular floor is 18 feet long and 12 feet wide. what is the area of the floor in square yards
yaroslaw [1]
You need to find the answer in yards
1 yard=3 feet
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A=bh
A=4*6
A=24 yards ^2
hope this helps:)
please mark thanks and brainliest:)
5 0
2 years ago
Read 2 more answers
What is the equation of the line that has a y-intercept of 5 and is parallel to
victus00 [196]

Answer:

A) 2x + 5

Step-by-step explanation:

First, turn 2x - y = 16 into 2x - 16 = y by adding the <em>y</em> on both sides and subtracting 16 from both sides.

You'll see that option A is the only option that matches the original function that we're comparing to.

Graphs will always be parallel to each other if they have the same slope, and both these functions have the same slope of 2.

7 0
3 years ago
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