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____ [38]
2 years ago
8

Plsssss

Mathematics
2 answers:
steposvetlana [31]2 years ago
8 0
<h2><u>DIRECT VARIATION</u></h2>

» Variables y and x have a proportional relationship, where y = 9 when x = 3. What is the value of x when y = 36? Enter your answer in the box.

<h3>Answer:</h3>
  • \underline{ \boxed{  \orange{\bold{ 12}}}}

— — — — — — — — — —

<h3>Steps-by-step explanation:</h3>

Since variables y and x have a proportional relationship, then the equation is in the form y=kx.

<h3>Given: y = 9 when x = 3.</h3>

First, we need to find the constant of variation (k) by substituting the given to the equation of variation.

  • \tt  y = kx \\ \tt \:  \:  \:  \:  9 = k(3) \\ \tt k=  \frac{9}{3} \\ \tt k=  \blue{3}

The constant of variation (k) is 3. So, find the value of x when y = 36.

  • \:  \:  \:  \: \tt  y = 3x \\ \tt   \: 36  = 3x\\ \tt  \:  \:  \:  \:  \: x =  \frac{36}{3} \\ \tt  \:  \:  \:  \:  \:  \:  \: x=  \underline{ \boxed{ \purple{ \tt{12}}}}

Hence the unknown value (x) is 12.

bixtya [17]2 years ago
3 0
3/9 = x/36
Now cross multiply
108 = 9x
X = 12
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Answer:

Statistic

Step-by-step explanation:

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By applying mathematical functions in this case addition and division to the values present in the sample, we have what is now known as statistic.

6 0
3 years ago
Solve?<img src="https://tex.z-dn.net/?f=-3%5Csqrt%7Bx%2B5%7D%20%2B6%3D-16" id="TexFormula1" title="-3\sqrt{x+5} +6=-16" alt="-3\
Lunna [17]

Answer:

x=\frac{439}{9} or x=48.777777777777777777777777777778 or x=48\frac{7}{9}

Step-by-step explanation:

Pls give Brainliest

7 0
2 years ago
Simplify. (x2+2x-4)+(2x-5x-3)​
vladimir2022 [97]

Answer:

Step by Step Solution

More Icon

STEP

1

:

3

Simplify ——

x2

Equation at the end of step

1

:

3

((((2•(x2))-5x)-——)+2x)-3

x2

STEP

2

:

Equation at the end of step

2

:

3

(((2x2 - 5x) - ——) + 2x) - 3

x2

STEP

3

:

Rewriting the whole as an Equivalent Fraction

3.1 Subtracting a fraction from a whole

Rewrite the whole as a fraction using x2 as the denominator :

2x2 - 5x (2x2 - 5x) • x2

2x2 - 5x = ———————— = ———————————————

1 x2

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

STEP

4

:

Pulling out like terms

4.1 Pull out like factors :

2x2 - 5x = x • (2x - 5)

Adding fractions that have a common denominator :

4.2 Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

x • (2x-5) • x2 - (3) 2x4 - 5x3 - 3

————————————————————— = —————————————

x2 x2

Equation at the end of step

4

:

(2x4 - 5x3 - 3)

(——————————————— + 2x) - 3

x2

STEP

5

:

Rewriting the whole as an Equivalent Fraction :

5.1 Adding a whole to a fraction

Rewrite the whole as a fraction using x2 as the denominator :

2x 2x • x2

2x = —— = ———————

1 x2

Polynomial Roots Calculator :

5.2 Find roots (zeroes) of : F(x) = 2x4 - 5x3 - 3

Polynomial Roots Calculator is a set of methods aimed at finding values of x for which F(x)=0

Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers x which can be expressed as the quotient of two integers

4 0
2 years ago
What is the unit rate of 9.60 for 4 pounds
leva [86]
9.60 / 4 = 2.40 per lb
5 0
3 years ago
What is 0.375 expressed as a fraction
Leno4ka [110]
0.735 expressed as a fraction is 3/8
7 0
2 years ago
Read 2 more answers
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