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Lapatulllka [165]
3 years ago
9

Three more than twice a number is 15 in algebraic equation

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
6 0
3 + 2n = 15

hope this helps
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What is the value of 9x^2 + 13x – 15, if x = 2
Paladinen [302]

Step-by-step explanation:

Given,

9 {x}^{2}  + 13x - 15

and

x = 2

Substitute x = 2 into expression.

9 {x}^{2}  + 13x - 15 = 9( {2}^{2} ) + 13(2) - 15 \\  = 9(4) + 26 - 15 \\  = 36 + 26 - 15 \\  = 62 - 15 \\  = 47

3 0
3 years ago
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Please help!!! MAX POINTS I CAN DO i put it in math because i trust the math people more
valkas [14]

Answer:

The 1st Blank is: A pure substance, or simply a substance

The 2nd blank on the left is: Elements

The 3rd blank on the right is: Compounds

The 4th blank which is the second middle one is: A mixture

The 5th blank which is the bottom left one is: Heterogeneous mixture

The 6th blank which is the last one on the bottom right is: Homogeneous mixture

Look at the step-by-step explanation if you get confused at the bottom.


Step-by-step explanation:

The 1st Blank: I would just put a pure substance.

The 2nd blank on the left: They are three characteristics of elements but just put elements.

The 3rd blank on the right: They are three characteristics of compounds but just put compounds.

The 4th blank which is the second middle one is: The characteristics of a mixture but just put a mixture.

The 5th blank which is the bottom left one: Are the characteristics of a heterogeneous mixture but just put heterogeneous mixture.

The 6th blank which is the last one on the bottom right: Are the characteristics of a homogeneous mixture but just put homogeneous mixture.


3 0
3 years ago
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The Happy-Go-Lucky Beach was 163 feet long from parking lot to high tide. After last year's hurricane came ashore, the beach onl
ANTONII [103]

Answer:

About 5.5% decrease

Step-by-step explanation:

Here, we want to calculate the percentage increase or decrease and its value.

The first thing to do here is to check if we are going to have a decrease or an increase.

since the value before the change is higher than the value after the change, then what we have is a decrease.

Mathematically, the percentage decrease is calculated as follows;

% decrease = (old value - new value)/old value * 100%

old value = 163 feet

new value = 154 feet

% decrease = (154-163)/163 * 100%

% decrease = -9/163 * 100%

% decrease = -5.52%

Thus the best answer is about 5.5% decrease

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3 years ago
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AnnyKZ [126]

Answer:

198/43

Step-by-step explanation:

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3 years ago
which inequality best represents the situation of you must be at least 52 inches tall to ride the water ride
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C ; x must be greater than or equal to 52 because you have to be 52 inches or greater to ride this ride.
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