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4 years ago

15

Mr. Duc asked Perry to set up 450 chairs in a large hall. Perry puts 20 chairs in each row. He has already set up 15 rows of cha

irs. How many more chairs must he set up?

2 answers:

IgorLugansk [536]4 years ago

5 0

Answer:

he must set up 150 more chairs left.

Step-by-step explanation:

scZoUnD [109]4 years ago

3 0

15*20=300
450-300=150
150chairs left

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Drag the tiles to the correct boxes to complete the pairs. Glven: U = (-2, -7>, V = (3, -4) , and W = (5, 1) . Based on the c

aev [14]

Answer:

Graph 1: u-v

Graph 2: u-w

Graph 3: w-v

Graph 4: v-u

Step-by-step explanation:

First, let us find u-v, u-w, w-v, v-u.

<u>u-v:</u>

<-2,-7> - <3,-4> = <-2-3,-7-(-4)>= <-5,-3>

<u>u-w:</u>

<-2,-7> - <5,1> = <-2-5,-7-1> = <-7,-8>

<u>w-v:</u>

<5,1> - <3,-4> = <5-3,1-(-4)> = <2,5>

<u>v-u:</u>

<3,-4> - <-2,-7> = <3-(-2),-4-(-7)> = <5,3>

Then we can match the results with the graphs.

Graph 1: u-v

Graph 2: u-w

Graph 3: w-v

Graph 4: v-u

4 0

2 years ago

An exterior angle of a regular convex polygon is 40°. What is the number of sides of the polygon?

seraphim [82]

Answer:

option B

Step-by-step explanation:

Sum of interior angles of a polygon with n sides:

$= (n - 2 )\times 180$

$Therefore, Each \ interior \ angle = (\frac{n - 2}{n} )\times 180$

$Sum \ of \ one \ of \ the \ interior \ angle \ with \ its \ exterior \ angle \ is \ 180^\circ$

$[ \ because \ straight \ line \ angle = 180^\circ \ ]$

That is ,

$Exterior \ angle + Interior \ angle = 180^\circ\\\\40^ \circ + (\frac{n-2}{n}) \times 180 = 180^\circ\\\\40 n + 180n - 360 = 180n\\\\40n = 180n - 180n + 360 \\\\40n = 360 \\\\n = 9$

OR

Sum of exterior angles of a regular polygon = 360

Given 1 exterior angle of the regular polygon is 40

Therefore ,

$n \times 40 = 360\\\\n = \frac{360}{40} \\\\n = 9$

8 0

3 years ago

Devon has 100 dimes and quarters. If the total value of what he has is $21.40, how many of each coin type does he have?

timurjin [86]

Answer:

4 dimes i think and 5.25 worth of quarters

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Look at the graph. What is ?

shepuryov [24]

Answer:

no picture.

Step-by-step explanation:

no picture

4 0

3 years ago

What is the circumstances of a circle that has a diameter of 15

zheka24 [161]

C=(3.14)(15)
you multiply and get 47.1

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3 years ago