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kumpel [21]
3 years ago
12

Your friend says the solution to the inequality 6X -12X is greater than or equal to -18 are x greater than or equal to 3. Solve

the inequality correctly. What air did your friend make?
Mathematics
1 answer:
Anna [14]3 years ago
8 0
He forgot to switch the sign to less than or equal to after he divided -18 by -6 because when you divide by negatives, you flip the sign. The correct answer is x is less than or equal to 3
You might be interested in
-7 (-7)^-4 plz help plz
Natali5045456 [20]

Answer: -1/343

Step-by-step explanation:

-7(-7)^-4

First, re-write as positive exponents:

-7(-1/7^4)

Next, simplify:

-1/7^3 (you can simplify using exponent rules)

Simplify 7^3 :

7(7)(7)

49(7)

343.

Insert to original expression:

-1/343.

5 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Oduvanchick [21]

Answer:

  see attached

Step-by-step explanation:

The Pythagorean theorem can be used to find the hypotenuse associated with each pair of legs. That tells you ...

  c² = a² +b² . . . . . legs a, b; hypotenuse c

__

<h3>alternate form of Pythagorean theorem</h3>

For the purpose of this problem, it is convenient to consider a slightly different form of the equation.

For legs √a and √b, the hypotenuse √c is given by ...

  (√c)² = (√a)² +(√b)²

  c = a +b

That is ...

  legs √a, √b ⇒ hypotenuse √(a+b)

__

<h3>application to this problem</h3>

Since the legs are (mostly) given in terms of square roots, the value under the radical for the hypotenuse is simply the sum of those:

legs: √1, √2 ⇒ hypotenuse √(1+2) = √3

legs: √2, √3 ⇒ hypotenuse √(2+3) = √5

legs: √5, √3 ⇒ hypotenuse √(5+3) = √8

legs: √5, √1 ⇒ hypotenuse √(5+1) = √6

_____

<em>Additional comment</em>

You may not see the leg lengths given as square roots very often. This is a rather unusual set of problems for hypotenuse length.

6 0
1 year ago
Read 2 more answers
What is the answer of this question?
NeX [460]
X =/= 4, -4

Explanation: if you replace the values of “x” with either “4” or “-4”, then one or more of the denominators will equal 0. Since you can not divide by zero, “X =/= 4, -4” is the correct solution.
7 0
3 years ago
Q<br> angles.<br> (2x+38)°<br> +<br> (x-10<br> р<br> R<br> Please help me solve this
Cerrena [4.2K]

Answer:

x=38

Step-by-step explanation:

First, know that the sum of the angles in a triangle is 180.

Then, add the angles. 2x+38+x+x-10.

Make them equal to 180.

2x+38+x+x-10=180

Simplify.

4x+28=180

Subtract 28 from 180.

4x=152

Divide 4 from 152 to make x alone.

x=38

There you go!

Please mark brainliest!

4 0
2 years ago
Which of the following is a quadratic equation whose roots are 3 and -1?
Natali5045456 [20]

Answer:

B: x²-2x-3=0

x1= -1 x2= 3

4 0
3 years ago
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