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7nadin3 [17]
4 years ago
12

Y=4x+7 y=-3x alive by graphing

Mathematics
1 answer:
Allisa [31]4 years ago
7 0
Not sure what alive by graphing means, but these are the equations on a graph. Red is y=4x+7 and blue is y=-3x.
:^)

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I need these anwsers asap I'll give 100 points!!
Nadya [2.5K]
11.
slope intercept is solve for y

12x+y=-5
y=-12x-5



12. y-y1=m(x-x1)
a point is (x1,y1) and slope is m

y+2=(-2/3)(x+3)
y+2=(-2/3)x-2
y=(-2/3)x+0

13.
slope find
(-1-2)/(-5-0)
-3/-5=3/5

given (0,2)
yint is 2
y=mx+b
b=yint

y=(3/5)x+2



14.
initially (x=0) y intercept is 9
speed is slope is -6 because getting close to home

y=-6x+9

a. standard form is solve for constant
6x+y=9

b. y intercpet is 9 that is how far you are away from home at start

c. x intercept is where y=0 or when you reach home
that is
0=-6x+9
6x=9
x=3/2
at 3/2 hours or 1.5hours

5 0
3 years ago
Read 2 more answers
-4x+7= -1 helpppppppppppppppppppppp
Elan Coil [88]

Answer: x=2

Step-by-step explanation:

-4x+7=-1

-4x=-8

x=2

4 0
2 years ago
Read 2 more answers
Eric is told by his doctor that he needs to lose 15 pounds. If Eric now weights 285 pounds,then by what percentage should Eric w
tatuchka [14]

Answer:

5.26%

Step-by-step explanation:

15/285=x/100. 15 is the amount of weight he wants to lose. x=5.26%

3 0
3 years ago
Joint-Serve Prosthetics spends 43% of its total expenses for payroll. It increased its total expenses when it spent $250,000 for
Leni [432]
Answer: $2,150,000

Explanation: Let

T = Total expenses of Joint-Serve

Then, before the company acquired robotic assemblers, the expenses allocated for payroll is given by

Expenses for Payroll = 43% of Total Expenses
Expenses for Payroll = 0.43T     (1)
(Because 43% = 0.43)

Because the total expenses increased by $250,000 after spending for robotic assemblers, the total expenses = T + 250,000

So, the payroll expense is now calculated as

Expenses for Payroll = 38% of Total Expenses
Expenses for Payroll = 0.38(T + 250,000)     (2)
(Because 38% = 0.38 and total expenses = T + 250,000)

By comparing equations (1) and (2),

0.43T = 0.38(T + 250,000)
\\ 0.43T = 0.38T + 0.38(250,000)
\\ 0.43T = 0.38T + 95,000
\\ 0.43T - 0.38T = 95,000
\\  \frac{0.05T}{0.05}  =  \frac{95,000}{0.05} 
\\ \boxed{T = \$ 1,900,000}

Thus, the total expense before the purchase of robotic assemblers is T = $ 1,900,000. Therefore, the total expense after purchasing the robotic assemblers is T + 250,000 = 1,900,000 + 250,000 = $2,150,000  
6 0
3 years ago
Please help. I am horrible with math.
Anastaziya [24]

Hi!

I can help you with joy!

The answer is 2x= 6x.

This is an example of direct variation!

*GentleGirlie*

7 0
3 years ago
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