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2 years ago

Write the equation of the line that passes through the points (4, -3) and

Mathematics

1 answer:

vivado [14]2 years ago

8 0

Answer:

y+3=-5(x-4)

Add 20 characters to explain the point

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3^x+2=8^x-1 Solve for x.

zubka84 [21]

I assume the equation is supposed to be

$3^{x+2}=8^{x-1}$

Then we can write

$9\cdot3^x=\dfrac18\cdot8^x\implies\left(\dfrac38\right)^x=\dfrac1{72}$

Take the logarithm of base 3/8 on both sides:

$\log_{3/8}\left(\dfrac38\right)^x=\log_{3/8}\dfrac1{72}$

$\implies x\log_{3/8}\dfrac38=-\log_{3/8}72$

$\implies x=-\log_{3/8}72$

- - -

If the equation is actually $3^x+2=8^x-1$ , I'm afraid it cannot be solved exactly.

5 0

3 years ago

HELP I NEED HELP ASAP

victus00 [196]

Answer: (5, -2)

Step-by-step explanation:

$y= x-7\\2x+y=8$

Substitute x-7 for y in 2nd equation

$2x+ x-7 =8\\3x-7=8\\3x = 15\\x=5$

Solve for y

$y=5-7\\y=-2$

8 0

2 years ago

Ahhh hi pls help <br> f(x)=-2x^2+3

nikklg [1K]

Answer:

Step-by-step explanation:

F(x) is another name for y

If you make a table of values, you can plot the coordinates of this quadratic equation.

When "x" is 0, y is 3

7 0

3 years ago

Question 19

Otrada [13]

Answer:

The slope is -1/3

4 0

3 years ago

What is the 4th square number

Oksanka [162]

Answer:

16 is the 4th square number.

5 0

2 years ago

Read 2 more answers