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Travka [436]
3 years ago
13

What number is 15% of 215

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
3 0
15/100 × 215 = 3225/100
= 32.25

i am a mathematics teacher. if anything to ask please pm me
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Line L passes through the points (0 - 3) and (6,9).
Luden [163]

a)  find the slope of the line using the given points.

Slope:  9 - -3/6-0 then slope is 12/6 which is 2

Then using formula:  y = mx+b

-3 = 2(0) + b

b = -3

The equation is:  y = 2x -3

B. Slope of a perpendicular is -reciprocal of first line. So here the slope will be -1/2

y = mx + b is used again

2 = -1/2(0) + b

b = 2

The equation is:  y = -1/2x +2

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3 years ago
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4 0
3 years ago
Can you help and tell me how you got the answer
geniusboy [140]
Y= -2X
Y= -2•3
Y= -6
X=3

Y= -2X
Y= -2•(-3)
Y=6
X= -3

Answer is y= -2X
8 0
3 years ago
PLEASE HELP. I WILL GIVE BRAINLIEST!<br> I'M HAVING SOME TROUBLE.
nalin [4]

Answer:

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The coordinates of N' are (1/5, 1)

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7 0
3 years ago
Tickets for a school play sold for $7.50 for each adult and $3.00 for each child. The total receipts for 118 tickets totaled $69
NeX [460]
X= number of adult tickets
y=number of child tickets.
we can suggest this system of equations: 
x+y=118                 ⇒x=118-y
7.5x+3y=696

we can solve this system of equations by substitution method:
7.5(118-y)+3y=696
885-7.5y+3y=696
-4.5y=-189
y=-189/-4.5
y=42

x=118-y
x=118-42
x=76

Answer: the number of adult tickets sold was 76. 
7 0
3 years ago
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