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adelina 88 [10]
2 years ago
13

Solve for a. 7a-2b = 5a b

Mathematics
2 answers:
Nookie1986 [14]2 years ago
8 0

For this case we have the following expression:

7a-2b = 5ab

From here, we must clear the value of a.

We then have the following steps:

Place the terms that depend on a on the same side of the equation:

7a - 5ab = 2b

Do common factor "a":

a (7 - 5b) = 2b

Clear the value of "a" by dividing the factor within the parenthesis:

a =\frac{2b}{7-5b}

Answer:

The clear expression for "a" is given by:

a =\frac{2b}{7-5b}

Fittoniya [83]2 years ago
8 0

Answer:  The required value of a is \dfrac{2b}{7-5b}.

Step-by-step explanation:  We are given to solve the following equation for the value of a:

7a-2b=5ab~~~~~~~~~~~~~~~~~~~~~(i)

Since there are two unknowns and only one equation , so the value of a will definitely contain the value of b.

The solution of equation (i) for a is as follows:

7a-2b=5ab\\\\\Rightarrow 7a-5ab=2b\\\\\Rightarrow a(7-5b)=2b\\\\\Rightarrow a=\dfrac{2b}{7-5b}.

Thus, the required value of a is \dfrac{2b}{7-5b}.

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What pattern is represented by the polynomial ? 4x^2+12x+9 A. difference of two squares B. general trinomial C. perfect square t
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Answer:

Option C - Perfect square trinomial.

Step-by-step explanation:

Given : Polynomial 4x^2+12x+9

To find : What pattern is represented by the polynomial?

Solution :

First we make the polynomial in factor form,

Polynomial 4x^2+12x+9

Since, it is not factor clearly so try to make the square.

Taking 4 common,

=4(x^2+3x+\frac{9}{4})

Identifying the x and y terms in the identity,(x+y)^2=x^2+y^2+2xy

=4((x)^2+2\times x\times \frac{3}{2}+(\frac{3}{2})^2)

Factor the perfect square trinomial,

=4(x+\frac{3}{2})^2)  

Therefore, The pattern polynomial represent is perfect square trinomial.

So, Option C is correct.

7 0
3 years ago
Suppose that replacement times for washing machines are normally distributed with a mean of 9.3 years and a standard deviation o
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The probability will be found as follows:
z-score is given by:
z=(x-μ)/σ
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standard deviation-σ=1.1 
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7 0
3 years ago
Jake monthly expenses include a $60 cable bill, a $200 car payment and $120 for car insurance. If he brings home $525 per month,
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Answer:

he would have 145 dallors after baying his bills


Step-by-step explanation:


5 0
2 years ago
Read 2 more answers
You roll a number cube twice what is the probability of rolling a 2
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Note that I did not write this. This answer comes from Wyzant. I am only linking this to you so that you'll get the answer quickly.

4 0
2 years ago
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Evaluate: 9 + x/5 for x = 30 15 16 17 18
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<u>Answer:</u>

\bold{9+\frac{x}{5}=15}

<u>Solution:</u>

Given: x=30

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9+\frac{30}{5}

On dividing 30 and 5 we get,

\Rightarrow 9+6 = 15

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7 0
3 years ago
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