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Katena32 [7]
3 years ago
14

Find the x- and y-intercepts of5x-3y = 12.x-intercept:y-intercept:​

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
8 0

Answer:

-5x           -5x

-3y=-5x +12

/-5x    /-5x

-5-3y=x+12

  /-3     /-3

-5+y=x-4

+5      +5

y=x+1<---(y intercept(and it is its slop))

5x-3y = 12

   /-3y   /-3y

5x=-3y+12

/5     /5

x=-3y+2.4

/-3     /-3

-3+x=y+2.4

+3          +3

x=y+5.4<---(x intercept(not the slop because the y is not the first number))

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I need to know the answer please…
Triss [41]
Answer is a= 51/7 or 7 2/7

Step by step

-2/3 (a + 3) = 5/3a - 19

Distribute to resolve parentheses

-2/3a -2 = 5/3a - 19

Now to move variables to one side
Add 2/3a to both sides

-2/3a + 2/3a -2 = 5/3a + 2/3a -19

Combine like terms

-2 = 7/3a -19

Add 19 to both sides to isolate variable

-2 +19 = 7/3a -19 + 19

17 = 7/3a

Divide both sides by 7/3 to solve for a
(Remember when you divide a fraction, flip it and multiply.)

17 * 3/7 = a

51/7 = a

Picture attached shows steps in order, I think that is what you also needed?

5 0
1 year ago
Element X decays radioactively with a half-life of eight minutes. If there are 800 g of element X, how long, to the nearest 10th
Harman [31]

Answer: 41.5 min

Step-by-step explanation:

This problem can be solved with the Radioactive Half Life Formula:  

A=A_{o}.2^{\frac{-t}{h}} (1)

Where:  

A=22 g is the final amount of the radioactive element

A_{o}=800 g is the initial amount of the radioactive element  

t is the time elapsed  

h=8 min is the half life of the radioactive element  

So, we need to substitute the given values and find t from (1):  

22 g=(800 g) 2^{\frac{-t}{8 min}} (2)  

\frac{22 g}{800 g}=2^{\frac{-t}{8 min}} (3)  

\frac{11}{400}=2^{\frac{-t}{8 min}} (4)  

Applying natural logarithm in both sides:  

ln(\frac{11}{400})=ln(2^{\frac{-t}{8 min}}) (5)  

-3.593=-\frac{t}{8 min}ln(2) (6)  

Clearing t:

t=41.46 min \approx 41.5 min This is the time elapsed

7 0
3 years ago
What is the slope of the line?
Natali [406]
The answer to this is -8/3
6 0
3 years ago
Pete dad usually deposits $25 into his bank account every week.for the next weeks he wants to deposit more than the usually $25
Burka [1]

Answer:

The answer is "8(25+x)>500;x>37.50".

Step-by-step explanation:

Please find the complete question in the attached file.

 \to 8(25+x)>500\\\\\to 200 +8x>500\\\\\to 8x> 300\\\\\to x> \frac{300}{8}\\\\\to x> 37.50

That's why above given choice is correct.

3 0
3 years ago
Does the following set of coordinates represent a function? *
serg [7]

Answer:

no because the x value -2 has two corasponding y values

Step-by-step explanation:

8 0
2 years ago
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