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weeeeeb [17]
3 years ago
9

3 times the sum of 6 and a number is 33

Mathematics
1 answer:
Citrus2011 [14]3 years ago
6 0

Answer:


Step-by-step explanation:

Let the number in question be 'n'.  Then twice the sum of the number and 3 is written as:

2(n + 3)

Three times the difference of the number and 9 is written as:

3(n - 9)

The problem says these two are equal, so:

2(n + 3) = 3(n - 9)

2n + 6 = 3n - 27

Add 27 to both sides:

2n + 33 = 3n

Subtract 2n from both sides:

33 = n (the number is 33)

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Help me find x please!
lana [24]
X should equal 100.  Hope this helps :)
4 0
3 years ago
The table shows the approximate height of an object x seconds after the object was dropped. The function h(x) = –16x2 100 models
gregori [183]

The given model would make the least sense to use for x=-2.75.

the given function is:

h(x)= -16x^2 +100

a quadratic relationship,

where

h is the height in feet

x is the time in seconds

<h3>what is kinetic energy?</h3>

Kinetic energy is a form of energy that an object or a particle has by reason of its motion.

as we know that time always appears to run forward, never backward. cannot take negative values so option 1 i.e 2.75 is not possible. Also, after a certain period of time object will vanish all its kinetic energy, resulting in h=0 but h(-2.75)= -21 which is meaningless.

h(-2.75) = -16*(-2.75)^2+100 = -21\\

h(0.25) = -16*0.25^2 +100=99-0.25^2*16+100=99

h(1.75) = -16*1.75^2+100=51

h(25) = -16*2.25^2+100= 19

therefore, x=-2.75 this model would make the least sense to use

to get more about kinetic energy refer to:

brainly.com/question/114210

6 0
2 years ago
How will you find the distance between these two points using Pythagorean theorem?
kow [346]
R represents radius or the distance between two points, the pythagorean expression will be
r² = Δx² + Δy²
Δ means the change, Δx means the change of x, Δy means the change of y

Given:
(x₁,y₁) = (-5,-1)
(x₂,y₂) = (0,2)

Input the numbers to the expression
r² = Δx² + Δy²
r² = (x₂ - x₁)² + (y₂ - y₁)²
r² = (0 + 5)² + (2 + 1)²
r² = 5² + 3²
r² = 25 + 9
r² = 34
r = √34

The distance is √34 unit length
3 0
3 years ago
To find the product of 3 7 × 2 9 , Cameron simplified 3 7 to 1 7 and then multiplied the fractions 1 7 and 2 9 to find the produ
yaroslaw [1]

Answer:

Step-by-step explanation:

Cameron task: 3/7 × 2/9

What he did:

• Simplify 3/7 to 1/7

• mulitiplied the fractions 1/7 and 2/9

Cameron's error was:

• The "simplification":

To simplify a fraction is to reduce to the lowest possible multiple. Illustration:

Simplify 16/100

= 2/25

But in the case of 3/7, the answer is 3/7.

What Cameron would have done:

1. 3/7 = 2/7 + 1/7

3/7 × 2/9 = (2/7 × 2/9) + (1/7 × 2/9)

= 4/63 + 2/63

= 6/63

2. since he simplified 3/7 to 1/7

1/7 = 3/7 × 1/3

Therefore,

3/7 × 2/9 = 1/7 × (2/9 × 3)

= 1/7 × 6/9

= 6/63

7 0
3 years ago
What is 1/6 x 4/5 simplified to
Mkey [24]

Answer:2/15

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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