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2 years ago

!!18 Points!!

Mathematics

1 answer:

bagirrra123 [75]2 years ago

5 0

The answer is C because 12+0.25*12= 15 and .25 of 12 is 3 so 12+3=15 which is what the answer c gives you. Sorry if this is more confusing than helpful.

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Explain the differences between properties of equality and properties of inequality when solving equations and inequalities.

matrenka [14]

Equalities will have the words "is" or "equals" or "the same as" in the wording. These produce a unique solution.

Inequalities have phrases like "at most" or "at least" or "no more than" in them. Solutions are a range of values, ranging between 2 values, or from a particular value to positive or negative infinity.

5 0

2 years ago

Read 2 more answers

One number is equal to the square of another. Find the numbers if both are positive and their sum is 380.

Paladinen [302]

Answer:

19 and -20

Step-by-step explanation:

Call that number is x, we have:

$x + x^2 = 380\\(x^2 + 2*x*\frac{1}{2} + \frac{1}{4} ) -\frac{1521}{4} =0\\(x+\frac{1}{2})^2 =\frac{1521}{4} \\First situation: x + \frac{1}{2} = \sqrt{\frac{1521}{4} } =\frac{39}{2} \\x = \frac{39}{2} - \frac{1}{2} = 19\\Second situation: x + \frac{1}{2} =- \sqrt{\frac{1521}{4} } =-\frac{39}{2} \\\\x =- \frac{39}{2} - \frac{1}{2} = -20\\\\In conclusion, x= 19 and x=-20$ Brainliest, please? It costs me so much time!

7 0

3 years ago

Pls help!!!!!!!!!!!!!

artcher [175]

Answer:1/4

Step-by-step explanation:

It’s just adding 1 on the x axis and adding 4 on the y axis then x/y

7 0

2 years ago

NEED HELP ASSP!! please help!!??

umka2103 [35]

Answer:

Step-by-step explanation:

this is a 30 60 90 triangle.. b/c 2 of the angles are given and you know the total is 180 around a triangle so the last angle is 30

also you know the hypotenuse of this triangle is 10 so use cos and sin to figure out the other sides

Use SOH CAH TOA to remember how the sin and cos functions fit on the triangle

CAH = Cos(Ф) = Adj/ Hyp we are given the Ф angle and we know the hypotenuse so solve for the Adj side

Hyp*Cos(Ф)= Adj

10 * Cos(60) = Adj

5 = Adj = y

Use Sin for the other side and the mnemonic to remember how it fits on the triangle and solve for the Opposite , since we don't know that .. yet

Sin(Ф) = Opp/ Hyp

Hyp * Sin (Ф) = Opp

10 * Sin(60) = Opp

10 * $\sqrt{3}$ /2 = Opp

5* $\sqrt{3}$ = Opp = x

:) I know Sin(60) = $\sqrt{3}$ /2 from a table and also my memory .. know that one from memory

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2 years ago

Identify the domain and range of following relation {(3,7),(3,8),(3,-2),(3,4)(3,1)

PSYCHO15rus [73]

The domain is the x-values. So domain is 3. Range is y-values. So range is -2, 1, 4,7, and 8. When writing either range or domain don't repeat numbers ,(example: domain is 3,3,3: wrong) and try putting the numbers from least to greatest.

5 0

2 years ago