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qaws [65]
4 years ago
13

There are 25 students. Average number of siblings for each student is 3. A new student with 8 siblings joins the class. The aver

age number of siblings that each student has is?
Mathematics
2 answers:
LenKa [72]4 years ago
6 0
3.19

To find average you add then divide by how many.
So, we can reverse because ? divided by 25 = 3 75 would be the mystery number because of the equation above. If you add 8 to 75 then divide by 26 ( new student ) you get 3.19230769
Marrrta [24]4 years ago
3 0

Answer

its actually 4 i just took test put 3 was completely wrong its 4!

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Find three consecutive integers whose sum is 558
SIZIF [17.4K]
Those are 185, 186 and 187

What you do is create this system of equations:

x+y+z=558  (three integers add up to 558)
x+1=y  (they are consecutive, so that is translated as a number+1)
y+1=z (same logic as before)

And then you just resolve that system.
8 0
3 years ago
PLEASE HELPP!!! BRAINLIEST AND THANKS AND 5 STARS!!
kirill [66]

Answer:

Step four

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 0
4 years ago
If x is 6, then 7x =​
Mekhanik [1.2K]

Answer:42

Step-by-step explanation:

7 multiplied by 6= 42

5 0
3 years ago
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Whats the answer to 8p squared minus 16 p=10
goblinko [34]
8p² - 16p = 10

8p² - 16p - 10 = 0      Divide through by 2

4p² - 8p - 5 = 0

Multiply first and last coefficients:  4*-5 = -20

We look for two numbers that multiply to give -20, and add to give -8

Those two numbers are 2 and -10.

Check:   2*-10 = -20         2 + -10 = -8

We replace the middle term of -8p in the quadratic expression with 2p -10p


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4p² + 2p - 10p - 5 = 0     

2p(2p + 1) - 5(2p + 1) = 0

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2p = 0 -1              2p = 0 - 5

2p = -1                    2p = -5

p = -1/2                    p = -5/2

The solutions are p = -1/2  or  -5/2
7 0
4 years ago
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