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4 years ago

Please answer this correctly

Mathematics

2 answers:

avanturin [10]4 years ago

6 0

Answer:

4 weeks 5 days

Step-by-step explanation:

mash [69]4 years ago

3 0

Answer: 4 weeks and 5 days

Step-by-step explanation:

9 weeks = 63 days

63 + 2 = 65

4 weeks = 28 days

28 + 4 = 32

65 - 32 = 33

7 * 4 = 28

33 - 28 = 5

28 days = 4 weeks

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15 of 20 answer

expeople1 [14]

Answer:

8 bags

Step-by-step explanation:

You divided them by 20 which gives you 4. So you take the 3 and multiply by 4 which is 12 bags. And then you do the same for your bags which makes you do 2 times 4 which gives you 8. You take 20 - 12 and that leaves you with 8.

3 0

3 years ago

A line segment has the endpoints (9, -16) and L (7,12) find the coordinates of its midpoints M

Anastasy [175]

Answer:

The answer to your question is: (8, -2)

Step-by-step explanation:

Data

A (9, -16)

L (7, 12)

Formula

$Xm = \frac{x1 + x2 }{2} Ym = \frac{y1 + y2}{2}$

Xm = $Xm = \frac{9 + 7}{2} Ym = \frac{-16 + 12}{2}$

Xm = 8 Ym = -2

8 0

3 years ago

During a musical an orchestra is playing. As the music plays, the volume changes in the beginning of the piece can be modeled by

IrinaK [193]

Answer:

<em>The sound level would be at 80 decibels at 1 or 7 number of measures played</em>

Step-by-step explanation:

<u>Equations with Absolute Values</u>

We have the function s to represent the sound level in decibels:

$s = 10|x - 4|+ 50$

Where x is the number of measures of the music played.

We are required to find the value of x that makes s=80 decibels. We have to find the equation:

$10|x - 4|+ 50 =80$

Subtracting 50:

$10|x - 4| =80-50$

$10|x - 4| =30$

Dividing by 10:

$|x - 4| =30/10=3$

$|x - 4| =3$

For the absolute value be equal to 3, its argument could be positive or negative:

$x-4=3$

$x-4=-3$

This leads us to two solutions:

$x=3+4=7$

x=7

$x-4=-3$

$x=4-3=1$

x=1

The sound level would be at 80 decibels at 1 or 7 number of measures played

4 0

4 years ago

12+24/(10-4)*(9-7)-17

Andrews [41]

Answer:

Step-by-step explanation:

8 0

3 years ago

Let U= U= Universal set ={0, 1, 2, 3, 4, 5, 6, 7, 8, 9}={0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , A={1, 3, 4, 5, 7, 9} A={1, 3, 4, 5, 7,

blagie [28]

Answer:

a) $A' = [0,2,6,8]$

b) $(AUB)' = [0,2,6]$

c) $(AUB')' = [9]$

d) A∩B′ $= [3,5,9]$

Step-by-step explanation:

Assuming this problem: "Let U= U= Universal set ={0, 1, 2, 3, 4, 5, 6, 7, 8, 9} , A={1, 3, 4, 5, 7, 9} , and B={1, 4, 7, 8} . List the elemetns of the following sets in the increasing order: a) A′= b) (A∪B)′={ , , }} c) (A∪B′)′={ }} d) A∩B′={ , , }}"

Part a

For this case we just need to find the elements in the universal set that are not in A. And we see that:

$A' = [0,2,6,8]$

And that represent the complement for A

Part b

For this case we need to find first the Union AUB who are the elements on A or B without repetition and we got:

$AUB = [1,3,4,5,7,8,9]$

And now the complement for (AUB)' are the elements that are not in AUB but are on the universal set and we got:

$(AUB)' = [0,2,6]$

Part c

For this case we need to find B' who are the elements on the universal set that are not in B

$B' = [0,2,3,5,6,9]$

Then we can find the union between AUB' and we got:

$AUB' = [0,1,2,3,4,5,6,7,9]$

And then the complment is just:

$(AUB')' = [9]$

Part d

For this case we just need to see the elements in common between A and B' and we got:

A∩B′ $= [3,5,9]$

6 0

4 years ago