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3 years ago

6

X - 2y + 2z = -2 -x + 4y - 2z = 3 2x - 4y +z = -7

1 answer:

givi [52]3 years ago

3 0

Step-by-step explanation:

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The cat is 12 feet above the ground and the ladder is 9 feet away from the tree because of the mud. How long does the ladder nee

marin [14]

Answer:

15 feet

Step-by-step explanation:

The ladder is the hypotenuse of a right triangle, with the legs being 9 ft and 12 ft long (see the picture).

To solve for the length of the ladder, use the Pythagorean Theorem.

$9^{2} +12^{2} =c^{2} \\c=\sqrt{9^{2} +12^{2}} \\c=\sqrt{81+144} \\c=\sqrt{225} \\c=15$

4 0

3 years ago

PLZZZ HELP ASAP STAT

Alenkasestr [34]

Step-by-step explanation:

see attached. I hope this helps.

7 0

3 years ago

2) -2(7n – 6) +n=-3 - 8n

iogann1982 [59]

<em>Answer and Step-by-step explanation:</em>

<em>For this equation the answer is : $n=3$ </em>

<em>Step 1 : Simplify both the sides of the equation :</em>

<em> $-2(7n-6)+n=-3-8n$ </em>

<em> $(-2)(7n)+(-2)(-6)+n=-3+-8n$ (Distribute)</em>

<em> $-14n+12+n=-3+-8n$ </em>

<em> $(-14n+n)+(12)=-8n-3$ (Combine the like terms)</em>

<em> $-13n+12=-8n-3$ </em>

<em> $-13n+12=-8n-3$ </em>

<em>Step 2 : Add " $8n$ " to both the sides :</em>

<em> $-13n+12+8n=-8n-3+8n$ </em>

<em> $-5n+12=-3$ </em>

<em>Step 3 : Subtract " $12$ " from both the sides :</em>

<em> $-5n+12-12=-3-12$ </em>

<em> $-5n=-15$ </em>

<em>Step 4 : Divide both the sides by " $-5$ "</em>

<em> $\frac{-5n}{-5} =\frac{-15}{-5}$ </em>

<em> $n=3$ </em>

<em />

<em>That's your final answer : $n=3$ </em>

7 0

3 years ago

Read 2 more answers

Which two values of x are roots of the polynomial below? x^2+3x+5

VARVARA [1.3K]

answer:2x-4+=5x

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Find the inverse of f(x) = -2x+5<br> The inverse is g(x) = <br> Graph the function and its inverse

vovikov84 [41]

Given:

The function is:

$f(x)=-2x+5$

To find:

The inverse of the given function, then draw the graphs of function and its inverse.

Solution:

We have,

$f(x)=-2x+5$

Step 1: Substitute $f(x)=y$ .

$y=-2x+5$

Step 2: Interchange x and y.

$x=-2y+5$

Step 3: Isolate variable y.

$2y=5-x$

$y=\dfrac{5-x}{2}$

Step 4: Substitute $y=f^{-1}(x)$ .

$f^{-1}(x)=\dfrac{5-x}{2}$

Therefore, the inverse of the given function is $f^{-1}(x)=\dfrac{5-x}{2}$ and the graphs of these functions are shown below.

Note: The inverse function is $f^{-1}(x)=g(x)$ .

6 0

3 years ago