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3 years ago

Find the sum for(2x−6)+4(x−3)

Mathematics

2 answers:

Mars2501 [29]3 years ago

7 0

Use distributive property
4(x-3) = 4x-12
2x-6 + 4x - 12
Combine like term
6x - 18

mylen [45]3 years ago

3 0

Answer:

6x - 18

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Algebra I

Combining Like Terms

Step-by-step explanation:

Step 1: Define expression

(2x - 6) + 4(x - 3)

Step 2: Simplify

Distribute 4: 2x - 6 + 4x - 12
Combine like terms (x): 6x - 6 - 12
Combine like terms (Z): 6x - 18

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John flips three pennies. (a) amy peeks and sees that the first coin lands heads. What is the probability of getting all heads

Zanzabum

Answer- Probability of getting all heads is 0.25

Solution-

As the outcome of the first experiment is know to be Heads. So the sample space becomes

S = {(H, H, H),(H, H, T),(H, T, H),(H, T , T)}

$\left | S \right | = 4$

$\left | E \right |= Getting \ all \ heads = 1$

$P(E) = \frac{\left | E \right |}{\left | S \right |} = 0.25$

5 0

3 years ago

Solve the inequality -9x/11 - 7 < -5.

Nuetrik [128]

-9x/11 -7< -5
+7 +7
-9x/11 < 2
*11 < *11
-9x < 22
/-9 /-9
x> 2.4

3 0

3 years ago

-{1-2[10-(-1-5)²]} ASAP I got -53 is it right?

Sauron [17]

Answer:

You are correct the answer is -53

Step-by-step explanation:

So you first add -1 and -5

Which is -6

-6 to the second power is 36

36 times - is -36

10-36 is -26

Then it is multiplied by -2

Thus 52

Add 1 to 52 which is 53

53 times - is -53

Thus you are correct

7 0

2 years ago

How do I find the surface area of a right circular cone?

UkoKoshka [18]

Greetings!

"How do I find the surface area of a right circular cone?"...

The formula to find the surface area of a right cone is :
$=\pi r(r+ \sqrt h^2+r^2)$

Lets it out:
$r=5$ and $h=12$

$=\pi(5)((5)+ \sqrt (12)^2+(5)^2)$
Follow PEDMAS.
$=\pi(5)((5)+ \sqrt 169)$
$=\pi(5)((5)+ 13)$
$=\pi(5)(18)$
$=15.7079633(18)$
$=282.743339$

The SA of the cone would be 282.743339.

Hope this helps.
-Benjamin

8 0

3 years ago

At 6:00 a.m the outside temperature was -14.4 by noon, the outside temperature had dropped 8.1

Mamont248 [21]

Your answer is -22.5

You subtract -14.4-8.1

Hope this helps!

8 0

3 years ago