3 years ago

Can someone help me with variable expressions

Mathematics

1 answer:

EastWind [94]3 years ago

4 0

You get the product by multiplying...in this case you want to double the product of j and 8 so:

2(8*j)

2(8j)

16j

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Cesar bought 20 boxes pizza. He gave 14 boxes of pizza to his classmates. Write the percentage of pizza left.

LenaWriter [7]

Answer:

30%

Step-by-step explanation:

total boxes of pizza = 20

he gave away 14 boxes

so pizza left is 20 - 14 = 6 boxes

to calculate percentage = 6 / 20 * 100

= 6 * 5

= 30%

5 0

2 years ago

What is the equation of the following graph in vertex form?

anygoal [31]

Answer:

I think the answer is 0,8

6 0

3 years ago

4 points: A,B,C and D are marked in order on a line such that AB:AC = 3:5 and BD:CD= 7:2. If CD is 10cm long, find the length of

Jlenok [28]

ab:ac=3:5
bd:cd=7:2
if cd is 5 cm then cd=2:5 then ab=3:x

2:5=3:x
15=2x
x=15/2
x=7.5 cm
Happy studying! ^_^

4 0

3 years ago

What is (2+y)³ written out? 8 + 12y + 6y² + y³ 6 + 8y + 4y² + y³

AveGali [126]

$\boxed{(2+y)^3-cube\ the\ sum\ of\ the\ numbers\ 2\ and\ y}$

$Use:\ (a+b)^3=(a+b)(a+b)(a+b)=a^3+3a^2b+3ab^2+b^3\\----------------------------\\(2+y)^3=2^3+3\cdot2^2\cdot y+3\cdot2\cdot y^2+y^3=8+3\cdot4y+6y^2+y^3\\\\=8+12y+6y^2+y^3\\========================================$

$8+12y+6y^2+6y^3+8y+4y^2+y^3\\=8+(12y+8y)+(6y^2+4y^2)+(6y^3+y^3)\\=8+20y+10y^2+7y^3$

7 0

3 years ago

Read 2 more answers

A right triangle has side length that are consecutive integers of 12 feet what are the angles of the triangles

xxTIMURxx [149]

Your intention with the wording "consecutive integers of 12 feet" is not clear. Shown are triangles with sides 12 and 13 (a nice Pythagorean triple) as well as 11 and 12.

7 0

3 years ago