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Troyanec [42]
3 years ago
15

I NEED HELP PLEASE I DONT UNDERSTAND AND CANT FAIL

Mathematics
2 answers:
butalik [34]3 years ago
8 0

Answer:

Step-by-step explanation:

jonny [76]3 years ago
6 0

Answer:

D, 3y+1

Step-by-step explanation:

Use the first equation because a variable is already isolated (alone)

Because x = 3y+1, and you are substituting x, the answer is D

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Onions are on sale at four different grocery stores. Which store offers the
Helga [31]
Farm fresh because for $3.20 you get four pounds which is the better deal
4 0
2 years ago
Read 2 more answers
Pls help!! look at photo
monitta

Answer:

2 : 1

Explanation:

\sf area \ of \ sector: \dfrac{\theta}{360} \pi r^2

<u>1st sector</u>:

\sf \rightarrow area: \dfrac{80}{360} \pi (8)^2  = 44.68 \ cm^2

<u>2nd sector</u>:

\sf \rightarrow area: \dfrac{160}{360} \pi (4)^2  = 22.34 \ cm^2

Ratio of 1st sector to 2nd sector:

44.68 : 22.34

2 : 1

7 0
2 years ago
Read 2 more answers
S the expression x3•x3•x3 equivalent to x3•3•3
Artyom0805 [142]
Remember
(x^m)(x^n)=x^(m+n)
and difference of 2 perfect squres
(a²-b²)=(a-b)(a+b)
and sum or difference of 2 perfect cubes

so
(x^3)(x^3)(x^3)=x^(3+3+3)=x^9
so

x^9=3*3*x^3
x^9=9x^3
minus 9x^3 both sides
0=x^9-9x^3
factor
0=(x^3)(x^6-9)
factor difference of 2 perfect squraes
0=(x^3)(x^3-3)(x^3+3)
factor differnce or sum of 2 perfect cubes (force 3 into (∛3)³)
0=(x³)(x-∛3)(x²+x∛3+∛9)(x+∛3)(x²-x∛3+∛9)
set each to zero

x³=0
x=0

x-∛3=0
x=∛3

x²+x∛3+∛9=0 has no solution

x+∛3=0
x=-∛3

x²-x∛3+∛9=0 has no solution



so the solutions are
x=-∛3, 0, ∛3
3 0
3 years ago
The temperature at a point (x, y, z) is given by T(x, y, z) = 300e−x2 − 3y2 − 7z2 where T is measured in °C and x, y, z in meter
Elenna [48]

Answer:

Rate of change 24^{\circ}C per meter.

Step-by-step explanation:

Given,

T(x,y,z)=300e-x_{2}-3y_{2}-7z_{2}

Then,

T_{x_2}=-1, T_{y_2}=-3, T_{z_2}=-7

Change of temperature at the point say, (x,y,z)=(2,-1,3) along the direction say, (u,v,w)=(6,-4,6) is,

\Big[uT_{x_2}+vT_{y_2}+wT_{z_2}\Big]_{(x,y,z)}

=(6\times -1)+((-4)\times (-3))+(3\times 6)

=24

Hence the rate of change  of temperature is 24^{\circ}C per meter.

3 0
3 years ago
A systems engineer is experimenting with a system that has traditionally produced an average quality index of 10 and a standard
kotegsom [21]

Answer:

n= 300

Step-by-step explanation:

Please see attachment.

Download pdf
6 0
2 years ago
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