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Korvikt [17]
3 years ago
10

Y-3=-2(x-6) Rewrite in Ax+By=C

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
3 0
<span>y-3=-2(x-6)
y-3= -2x +12
y - 3 + 2x- 12 =0

2x+y =15,  
Ax +By =C

A=2, B=1, C=15
</span>
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A middle school has 470 students. Regina surveys a random sample of 40 students and finds that 28 have cell phones. How many stu
Dmitry [639]
So from that i think the formula would be
\frac{x}{470}  =  \frac{28}{40}
so then you find "x" by multiplying 470 x 28 which equals 13,160. Then you divide 13,160 by 40 which equals 329.
X=329
329 students are likely to have phones

4 0
3 years ago
Read 2 more answers
Pleaseeeee i need help
ziro4ka [17]

Answer:

110687192.78951, 6488.47368421, 4214, 0.0464, 0.03626

SIMPLIFIED WAY OF SAYING IT:

Last One to First Box

3rd One to 2nd Box

1st one to 3rd box

2nd one to 4th box

4th one to 5th box

Step-by-step explanation:

(4.3*10^(6))*(9.8*10^(-4)) = 4,214

(2.9*10^7)*(1.6*10^-9) = 0.0464

(4.7*10^3)*(8.6*10^-7)/(3.8*10^-4)*(6.1*10^2) = 6488.47368421

(4.9*10^3)*(7.4*10^-6) = 0.03626

Last one = 110687192.78951

3 0
1 year ago
As θ increases from -pi/2 to 0 radians, the value of cos θ will.
GrogVix [38]

Answer:

4) Increase from 0 to 1

Step-by-step explanation:

We have to analyze the value of cos(Ф) from -π/2 to 0. This can be done if we simplify evaluate the value of cos(Ф) at these two extreme.

cos(-\frac{\pi}{2}) = cos(\frac{\pi}{2} )=cos(90)=0\\\\  cos(0)=1

This shows that value of cos(Ф) is 0 at  -π/2  or -90 degrees and increased to 0 at 0 degrees.

This answer can be validated if you visualize the graph of cos function. Cos function has a peak at 0 degrees, i.e. a value equal to 1. On right and left side of 0 degrees, the curve starts falling down and eventually touches the horizontal axis at 90 degrees and -90 degrees. This is shown in the graph attached below:

8 0
2 years ago
The length of a rectangle field if 7/5 of its width. if the perimeter of the field is 240 meters, what are the length and width
trasher [3.6K]
Perimeter of any figure is all its sides summed up

for a rectangle, with two equal pairs, that means, length + length + width + width or   2length + 2width, or  2(length + width)

but we know the length is 7/5 the width

width = w
perimeter = P


\bf P=2\left(\frac{7}{5}w +w \right)\qquad P=240\implies 240=2\left(\frac{7}{5}w +w \right)&#10;\\\\\\&#10;120=\frac{7}{5}w +w\impliedby \textit{let's multiply both sides by 5}&#10;\\\\\\&#10;600=7w+5w\implies 600=12w\implies \cfrac{600}{12}=w

and the length is 7/5 of that
7 0
3 years ago
If D = w2 - 7 and C = 3 + 10w, find an expression that equals<br> D C in standard form.
solniwko [45]

W^2-10w-10

Step-by-step explanation:

D=w^2-7

C=3+10w

D-C

(W^2-7)-(3+10w)

W^2-7-3-10w

7 0
2 years ago
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