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Bogdan [553]
4 years ago
6

Are these answers right? Questions are below!

Mathematics
2 answers:
Ipatiy [6.2K]4 years ago
7 0

Answer:

8 yes

10 yes

11 yes

12 yes

13 yes

Stella [2.4K]4 years ago
4 0

Answer:

I'm pretty sure they are all correct except number 12.

Explanation:

I just solved almost all of these a few minutes ago and i did my math slowly and checked it two times.

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A square flower garden has an area of 144 square feet. What is the length of one side of the garden?
Damm [24]
The answer is 12 feet because 144 squared is 12.
Hope this helps
6 0
3 years ago
Read 2 more answers
Find sin X, sin Z, cos X, and cos Z. Write each answer as a simplified fraction.
just olya [345]

Answer:

Find the answers below

Step-by-step explanation:

Using m<X as the reference angle

Opposite YZ = 7

Adjacent  XY = 10

Hypotenuse XZ = √149

Using the SOH CAH TOA identity

sinX = opp/hyp

sinX =YZ/XZ

sinX = 7/√149

For cos X

cos X = adj/hyp

cos X =10/√149

Using m<Z as reference angle;

Opposite XY = 10

Adjacent  YZ = 7

Hypotenuse XZ = √149

Using the SOH CAH TOA identity

sinZ = opp/hyp

sinZ =10/√149

sinZ = 7/√149

For cos Z

cosZ = 7/√149

7 0
3 years ago
Which number in the monomial 215x18y3z21 needs to be changed to make it a perfect cube?
Murljashka [212]
Remember
xyz=(x)(y)(z)
if x and y and z are all perfect cubes, xyz is also a perfect cube

remmeber
(x^n)^m=x^(mn)
so if it is perfect cube it can be factored into
(x^n)^3, such taht n is a whole number
basiclaly, see if the expoent is divisble by 3

all of them should be perfect cubes

215x^18y^3z^21

split them up to see which ones need changing

215=5*43, not  a perfect cube
could be changed to 6^3, which is 216

x^18=(x^6)^3

y^3=y^3
z^21=(z^7)^3

the 215 needs to be changed
 
8 0
4 years ago
Read 2 more answers
Substitute x+2y=8 3x+2y=6
vekshin1
Use x+2y=8
Subtract 2y to make
x=8-2y

Plug this in to the other equation
3(8-2y)+2y=6

Distribute the 3
24-6y+2y=6

Combine like terms
24-4y=6

Solve
18/4=y, 9/2=y

Plug and solve for x
X+2y=8
X+(2*9/2)=8
X+9=8
X=-1
8 0
3 years ago
Read 2 more answers
This is the question...plz hurry..thx
svetlana [45]

Answer:

20x-21y+14

Step-by-step explanation:

1/5(100x-105y+70)

20x-21y+14

6 0
3 years ago
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