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Paladinen [302]
3 years ago
7

Eliminations equations 9x - 4y = 19 4x+ 4y = 20

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
3 0

Answer:

a) x=23/9 or 2 5/9 or 2.5

b) x=5-y

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X= 1
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One half. 


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3 years ago
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Mrs.johnson is working on math with a group of students. she has a total of 15 students. 9 of them are girls. what is the ratio
Gnoma [55]

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6

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the rest are boys

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Describe what the notation Upper P (Upper B vertical line Upper A )represents.
sergey [27]

Answer: Option 'D' is correct.

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Since we have given that

Upper P (Upper B vertical line Upper A)

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4 0
4 years ago
A pole that is 3.1 m tall casts a shadow that is 1.79 m long. At the same time, a nearby building casts a shadow that is 40.75 m
Vesnalui [34]

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Step-by-step explanation:

7 0
3 years ago
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Would someone please help me?!
ella [17]
So
bowl is a half sphere
cylinder is a cylninder
cone is cone

bowl:
area of circle=4/3 pi times r^3
half bowl=4/3 times 1/2 times pi times r^3=2/3pi r^3

cylinder=height times pi times radius^2
this cylinder=r times pi times r^2=pi times r^3


cone=1/3 times height times pi times radius^2
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compare
bowl=2/3 pi r^3
cylinder=pi r^3
cone=1/3 pi r^3
the cylinder is biggest
CYLINDER IS THE ANSWER




2.
sphwere=4/3 times radius^3 times pi
this sphere=4/3 times pi times r^3

cylinder=height times radius^2 time pi
this cylinder=2r times r^2 times pi=2r^3 times pi

cone=1/3 times height time r^2 times pi
this cone=1/3 times 2r times r^2 times pi=1/3 times 2r^3 times pi=2/3 times r^3 times pi

sphere:4/3 pi r^3
cylinder: 2 pi r^3
cone: 2/3 pi r^3
7 0
3 years ago
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