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3 years ago

How to write 820.681 in expanded form

Mathematics

2 answers:

Anna007 [38]3 years ago

7 0

820.681 in expanded form would look like this: $800+20+.6+.08+.001$

WARRIOR [948]3 years ago

3 0

This is the answer
800+ 2O + . 6 +. 8 + 100

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6. a. Sixty students in a class took an examination in Physics and Mathematics. If 17 of them passed Physics only, 25 passed in

Ivahew [28]

Let $C$ be the set of all students in the classroom.

Let $P$ and $M$ be the sets of students that pass physics and math, respectively.

We're given

$n(C) = 60$

$n(P \cap M') = 17$

$n(P \cap M) = 25$

$n((P \cup M)') = n(P' \cap M') = 9$

i. We can split up $P$ into subsets of students that pass both physics and math $(P\cap M)$ and those that pass only physics $(P\cap M')$ . These sets are disjoint, so

$n(P) = n(P\cap M) + n(P\cap M') = 25 + 17 = \boxed{42}$

ii. 9 students fails both subjects, so we find

$n(C) = n(P\cup M) + n(P\cup M)' \implies n(P\cup M) = 60 - 9 = 51$

By the inclusion/exclusion principle,

$n(P\cup M) = n(P) + n(M) - n(P\cap M)$

Using the result from part (i), we have

$n(M) = 51 - 42 + 25 = 34$

and so the probability of selecting a student from this set is

$\mathrm{Pr}(M) = \dfrac{34}{60} = \boxed{\dfrac{17}{30}}$

7 0

2 years ago

Choose the correct graph of the function y= -8(2^x)

andriy [413]

Answer:

The graph should have a y-intercept of -8

Step-by-step explanation:

It seems like your question is incomplete, i can't see any options of graphs.

3 0

3 years ago

Evaluate a(4b + c2) if a = 2, b = 5, and c = 1.

Maksim231197 [3]

Answer:

Step-by-step explanation:

a = 2, b = 5, and c = 1

a*(4b + c²) = ⇒ plug in values
2*(4*5 + 1²) = ⇒ solving exponents
2*(20 + 1) = ⇒ parenthesis
2*21 = ⇒ multiplication
42 ⇒ answer

3 0

3 years ago

Read 2 more answers

What is 89972 rounded by the 3rd significant number

schepotkina [342]

the answer is 90000 or 9e+4. hope I helped!

5 0

3 years ago

Help me do this please

Rom4ik [11]

Use the distributive property.
(3/8)*(16x-24)=(3/8)(16x)-(3/8)(24)
16x*3/8=48x/8=6x
24*3/8=72/8=9
6x+9

Hope this helps!

4 0

3 years ago