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tigry1 [53]
3 years ago
7

Which is the least common denominator of the equation 2/9x+2/3=7?

Mathematics
2 answers:
Fed [463]3 years ago
8 0

Answer:

the answer will be BEE Lol but B

Step-by-step explanation:

Anvisha [2.4K]3 years ago
7 0
<h3>Answer: B) 9</h3>

The denominators are 9 and 3

The LCM (lowest common multiple) of 9 and 3 is 9. Therefore the LCD is 9.  Multiplying both sides by the LCD 9 will clear out the fractions.

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Each day that a library book is kept past its due date, a $0.30 fee is charged at midnight. Which ordered pair is a viable solut
Rom4ik [11]

Using a proportional relationship, the ordered pair that is a solution if x represents the number of days that a library book is late and y represents the total fee is:

(3, 0.9).

<h3>What is a proportional relationship?</h3>

A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

y = kx

In which k is the constant of proportionality.

For this problem, each day, the free is increased by $0.3, hence the constant is k = 0.3 and the function is:

y = 0.3x.

Then after three days, the total fee is:

y = 0.3 x 3 = 0.9.

And the ordered pair is:

(3, 0.9).

More can be learned about proportional relationships at brainly.com/question/28291848

#SPJ1

5 0
1 year ago
8.Find the value of c that makes the expression be a perfect square trinomial p^2-30p+c
Darina [25.2K]
Hope this is the right one.

Problem 8
p^2 - 30p + c
<em>Step One</em>
Take 1/2 of - 30
1/2 * -30 = - 15

<em>Step 2
</em>Square -15
(-15)^2 = 225
c = 225

Problem Nine
\text{x = }\dfrac{ -b \pm \sqrt{b^{2} - 4ac } }{2a} &#10;
a = 1
b = 4
c = -15
\text{x = }\dfrac{ -4 \pm \sqrt{4^{2} - 4*1*(-15) } }{2*1}
\text{x = }\dfrac{ -4 \pm \sqrt{\text{16} + \text{60} } }{2}

x = [-4 +/- sqrt(76)] / 2
x = [-4 +/- 2*sqrt19]/2
x = [-4/2 +/- 2/2 sqrt[19]
x = - 2 +/- sqrt(19) 

x1 = - 2 + sqrt(19)
x2 = -2 - sqrt(19)

These two can be broken down more by finding the square root. I will leave them the way they are.  It's just a calculator question if you want it to go into decimal form.

Problem Ten

a = 1
b = 4
c = -32

The discriminate is sqrt(b^2 - 4ac)
D = sqrt(b^2 - 4ac)
D = sqrt(4^2 - 4(1)(-32)
D = sqrt(16 - - 128)
D = sqrt(16 + 128)
D = sqrt(144)
D = +/- 12

Since D can equal + or minus 12 there must be 2 possible (and different) roots. As a matter of fact, this quadratic can be factored.
(x + 8)(x - 4) = y 
But that' s not what you were asked for.
The discriminate is >  0 so the roots are going to be real.
<em>Answer; The discriminate is > 0 so there will be 2 real different roots.</em>

4 0
3 years ago
The angles of a triangle are 2x, 3x, and 4x degrees. Find the value of x
alexandr1967 [171]
The answer of x is equal to  2
5 0
3 years ago
Here goes another question lol oops
Murrr4er [49]
Student 1 and 3.
- (5r - 3s + 1) =  - 5r + 3s - 1
Move the negative into the brackets,
positive becomes negative while two negatives make a positive.
3 0
3 years ago
Read 2 more answers
What is the 15th term of the sequence A(n) = -3n+50 ?
Lady bird [3.3K]

Answer:

hjjbvf for niinvolppllpp

3 0
3 years ago
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