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3 years ago

Find midpoint of CD C=(10,-1)and D=(6,3)

Mathematics

1 answer:

antoniya [11.8K]3 years ago

6 0

Answer:

(8,1)

Step-by-step explanation:

The x coordinate of the midpoint is

(10+6)/2 = 16/2 =8

The y coordinate of the midpoint is

(-1+3)/2 = 2/2 =1

The midpoint is (8,1)

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Nearly 5 out of 6 people choose as their favorite ice cream flavor. If 144 people attend an ice cream social, how many would you

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Answer:

120

Step-by-step explanation:

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3 years ago

An air plane moves at a constant speed of 120 miles per hour for 3 hours. How far does it go?

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Step-by-step explanation: All you got to do is multiply 120 by 3

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3 years ago

Read 2 more answers

At the Denver zoo, adult admission is $15 and children's is $9 a group of 12 people go to the zoo. Their total admission was $15

Natasha2012 [34]

Answer:

The number of adults admitted at the zoo=7

The number of children admitted at the zoo=5

Step-by-step explanation:

a). Determine first expression

Let the number of each group be as follows;

adults=a

children=c

total number of people=12

This can be expressed as;

number of people=number of children+number of adults

replacing;

a+c=12...equation 1

b). Determine the second expression

Let the total cost be expressed as shown;

total cost=(cost per child×number of children)+(cost per adult×number of adults)

where;

total cost=$150

cost per child=$9

number of children=c

cost per adult=$15

number of adults=a

replacing;

(15×a)+(9×c)=150

15 a+9 c=150...equation 2

c). Combine equation 1 and 2 and solve simultaneously

1(15 a+9 c=150)

9(a+c=12)=9 a+9 c=108

(15 a-9 a)+(9 c-9 c)=(150=108)

6 a=42

a=42/6

a=7

replacing the value for a in equation 1

7+c=12

c=12-7=5

The number of adults admitted at the zoo=7

The number of children admitted at the zoo=5

3 0

4 years ago

I’m not entirely sure with this question! Giving brainliest answer. :)

balu736 [363]

3a+7

Step-by-step explanation:

8 0

3 years ago

Suppose you bought supplies for a party. Three rolls of streamers and fifteen party hats cost $30. Later, you bought two rolls o

ZanzabumX [31]

The cost of 1 part hat is $ 1.5 and cost of 1 roll of streamer is $ 2.5

Solution:

Let "c" be the cost of each rolls of streamer

Let "p" be the cost of each party hats

Three rolls of streamers and fifteen party hats cost $30

Therefore, we frame a equation as:

Three rolls of streamers x cost of each streamer + fifteen party hats x cost of each party hats = 30

$3 \times c + 15 \times p = 30$

3c + 15p = 30 -------- eqn 1

Later, you bought two rolls of streamers and four party hats for $11

Thus we frame a equation as:

$2 \times c + 4 \times p = 11$

2c + 4p = 11 ------- eqn 2

Let us solve eqn 1 and eqn 2

Multiply eqn 1 by 2

6c + 30p = 60 ------ eqn 3

Multiply eqn 2 by 3

6c + 12p = 33 -------- eqn 4

Subtract eqn 4 from eqn 3

6c + 30p = 60

6c + 12p = 33

( - ) --------------

18p = 27

p = 1.5

Substitute p = 1.5 in eqn 2

2c + 4(1.5) = 11

2c + 6 = 11

2c = 5

c = 2.5

Thus cost of 1 part hat is $ 1.5 and cost of 1 roll of streamer is $ 2.5

3 0

3 years ago