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3 years ago

Graph the lines by finding the points of intersection with the axes (intercepts): y=2.5x+5

1 answer:

8 0

The y intercept is 5, since slope is y=mx+b. The x intercept is at -2. If you have more problems like this there is an amazing calculator that graphs equations like this for you. www.symbolab.com. Hope this helps!

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Find the error & find the correct answer 2In(x)=In(3x)-[In(9)-2In(3)] In(x^2)=In(3x)-[In(9)-In(9)] In(x^2)=In(3x)-0 In(x^2)=

Art [367]

Answer:

Error: $lnx^2=ln 3x$ not $ln\frac{3x}{0}$

Solution:x=0 and 3

Step-by-step explanation:

We have to find the error and correct answer

Given: $2ln x=ln(3x)-[ln9-2ln(3)]$

$lnx^2=ln(3x)-[ln9-ln3^2]$

Using the formula

$alog b=logb^a$

$lnx^2=ln(3x)-[ln9-ln9]$

$lnx^2=ln(3x)-0$

$lnx^2=ln(3x)$

$x^2=3x$

$x^2-3x=0$

$x(x-3)=0$

Therefore, x=0 and x=3

But last step in the given solution

$lnx^2=ln\frac{3x}{0}=\infty$

It is wrong this property is used when

$log m-log n$ then

$log\frac{m}{n}$

Hence, the student wrote $lnx^2=ln\frac{3x}{0}$ instead of $lnx^2=ln3x$ and solution is given by

x=0 and x=3

4 0

3 years ago

3⋅ 3/5 (3/5 is a fraction)

LUCKY_DIMON [66]

Well its a simplest form of zero and 6 tenths and if u divide it by 2 youll get 3/5 as a fraction

6 0

4 years ago

Let f(x) = x2 - 8x 5. Find f(-1).

Ymorist [56]

In the equation you have to replace all x's with -1

f (-1) = (-1)^2 - 8(-1) +5
f (-1) = 1 + 8 + 5
f (-1) = 14

the f(-1) stand for the function of -1. it is also equivalent to y

8 0

3 years ago

Read 2 more answers

Easy quick stuff pls Evaluate 11 - 19 - 4 - (-8). -20 -4 -26 -2

slamgirl [31]

Answer:

Step-by-step explanation:

11 - 19 - 4 - (-8) =

11 - 19 - 4 + 8 =

- 23 + 19 =

- 4 <===

5 0

3 years ago

Which of the following is the correct factorization of the polynomial below?

diamong [38]

Answer: correct answer is B.(2x+3y)(4x^2-6xy+9y^2)

8x^3 + 27y^3

(2x)^3+(3y)^3

(2x+3y)(4x^2-6xy+9y^2) <----answer

7 0

3 years ago