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Nuetrik [128]
3 years ago
8

SOMEONE PLEASE HELP TO BE MARKED THE BRAINLIEST

Mathematics
1 answer:
worty [1.4K]3 years ago
6 0

Answer: B

Step-by-step explanation:

Let's work this problem backwards. So, if he has y dollars left after spending 25% the second time or 3/4 of the money left. So, inverse it to get  \frac{4}{3}y. Then, do the same for 20% or 4/5, then 4/3y * 5/4 = 5/3y

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Sales tax is 7%. If c represents the retail cost of an item, which of the following expressions represent(s) the total cost of t
Lilit [14]

Answer. C + .07c

Step-by-step explanation:

C is retail. Sales tax of 7% (.07) is added to that retail cost to reach the total sales price

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3 years ago
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I need help please this isath i need my grade thx alot
Rainbow [258]

Answer:

A, -475ft

Step-by-step explanation:

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Find a parametrization of the line in which the planes x + y + z = -6 and y + z = -8 intersect.
rewona [7]

Answer:

L(x,y) = (2,-8,0) + (0,-1,1)*t

Step-by-step explanation:

for the planes

x + y + z = -6  and y + z = -8

the intersection can be found subtracting the equation of the planes

x + y + z - ( y + z ) = -6 - (-8)

x= 2

therefore

x=2

z=z

y= -8 - z

using z as parameter t and the point (2,-8,0) as reference point , then

x= 2

y= -8 - t

z= 0 + t

another way of writing it is

L(x,y) = (2,-8,0) + (0,-1,1)*t

6 0
3 years ago
HELP DUE IN 10 MINUTES!! WILL GIVE BRAINLEST IF CORRECT!!!!
Harman [31]

Answer:

<u>Given equation:</u>

  • y = 10x - 32

<u>To find the y-intercept, evaluate the equation with x = 0:</u>

  • y = 10*0 - 32
  • y = 0 - 32
  • y = -32

<u>To find the x-intercept, evaluate the equation with y = 0:</u>

  • 0 = 10x - 32
  • 10x = 32
  • x = 32/10
  • x = 3.2
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