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3 years ago

There are 50 students in the fifth grade one day 20% of them were absent how many fifth graders were in class that day

Mathematics

1 answer:

cricket20 [7]3 years ago

8 0

10 students were absent that day, so 40 students were in class.

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Factorise fully p^3 + p^2

nikklg [1K]

Answer:

$\huge\boxed{p^3+p^2=p^2(p+1)}$

Step-by-step explanation:

$p^3+p^2\\\\p^3=p^{2+1}=p^2\cdot p\\\\p^3+p^2=p^2\cdot p+p^2\cdot1=p^2(p+1)$

Used:

$a^n\cdot a^m=a^{n+m}\\\\\text{distributive property}:\ a(b+c)=ab+ac$

3 0

3 years ago

HELPPPPP!!!!! PLSSSS!!! 10 POINTS!

Serga [27]

Answer:

divide 81 by pi and then by 2

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Let f(x) = -2x - 7 and g(x) = -4x + 6. Find (fxg)(-5). a. -59 b. 3 c. 26 d. -6

DedPeter [7]

Answer:

Step-by-step explanation:

The given functions are:

$f(x) = - 2x - 7$

and

$g(x) = - 4x + 6$

$(f \times g)(x) = f(x) \times g(x)$

$(f \times g)(x) = ( - 2x - 7)( - 4x + 6)$

When we plug in x=-5, we get:

$(f \times g)( - 5) = ( - 4 \times - 5 + 6)( - 2 \times - 5 - 7)$

$(f \times g)( - 5) = ( 20 + 6)( 10 - 7)$

$(f \times g)(5) = ( 26)( 3) =7 8$

3 0

3 years ago

If A and B are independent events and P(A) and P(B) are both greater than 1/2

elixir [45]

Answer:

P(A and B) is greater than 1 is never happened ⇒ C

Step-by-step explanation:

Two events are independent if the result of the second event is not affected by the result of the first event

If A and B are independent events, the probability of both events is the product of the probabilities of the both events P (A and B) = P(A) · P(B)

∵ The probability of any event is less than 1

∵ P(A) < 1

∵ P(A) > $\frac{1}{2}$

- That means P(A) is greater than half and less than 1

∴ $\frac{1}{2}$ < P(A) < 1

∵ P(B) < 1

∵ P(B) > $\frac{1}{2}$

- That means P(B) is greater than half and less than 1

∴ $\frac{1}{2}$ < P(B) < 1

∵ P(A and B) = P(A) . P(B)

- Remember the product of any fractions less than 1 is less than 1

∴ $\frac{1}{4}$ < P(A) . P(B) < 1

- That means any expression equals to P(A) . P(B) must be greater

than $\frac{1}{4}$ and less than 1

∴ $\frac{1}{4}$ < P(A and B) < 1

∴ P(A and B) is greater than 1 is never happened

7 0

3 years ago

How many solutions does 12x + 1 = 12x - 10

MaRussiya [10]

Answer:

No solutions

Step-by-step explanation:

First things first we need to get rid of the variables so we subtract -12x from one side to the other.

Now we have 1= -10

In this case, 1 is not equal to -10 so we get no solutions!

(Side note: if they were the same like 3=3 that would be all solutions.)

3 0

3 years ago