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Elanso [62]
3 years ago
5

Solve for a. 28a=7 Simplify your answer as much as possible.

Mathematics
1 answer:
KonstantinChe [14]3 years ago
4 0

Answer:

a = 1/4

Step-by-step explanation:

To solve for a, you need to isolate it by dividing both sides by 28.

7/28 = 1/4

a = 1/4

Check your answer by plugging x = 1/4 back into the equation.

28(1/4) = 7

7 = 7

Your answer is correct.

Hope this helps!

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Find the product using suitable identities.<br> a) <img src="https://tex.z-dn.net/?f=%28%5Cfrac%7Bx%7D%7B3%7D%20%20-%206%29%5E%7
Vesna [10]

Answer:

\frac{x^2}{9} - 4x + 36

Step-by-step explanation:

(\frac{x}{3} - 6)² = (\frac{x}{3} - 6)(\frac{x}{3} - 6)

Each term in the second factor is multiplied by each term in the firs t factor, that is

\frac{x}{3}(\frac{x}{3} - 6) - 6(\frac{x}{3} - 6)

Distribute both parenthesis

= \frac{x^2}{9} - 2x - 2x + 36 ← collect like terms

= \frac{x^2}{9} - 4x + 36

5 0
3 years ago
Given f(x)<br> 6x – 5<br> a) Evaluate f(5)<br> f(5)<br> b) Evaluate f( - 3)<br> f(-3) =
prisoha [69]
We have the equation f(x)=6x-5 to start with
Now in order to answer the question we have to know that f(5) is the same thing as setting x=5 and solving for f(5)

(A) f(5) = 6(5) - 5 = 30 - 5 = 25
(B) f(-3) = 6(-3) - 5 = (-18) - 5 = -23

So f(5) = 25 and f(-3) = -23
8 0
3 years ago
Marcus solved for x in the quadratic equation x2 – 10x + 25 = 0.
lesantik [10]
1 ,3 and 4 are correct :)
6 0
3 years ago
Read 2 more answers
Make an equation and then solve it, show all your work.
Daniel [21]
The equation appears to be made already.

Using the Order of Operations, consider what operations are being done to the variable "c". They are
• divide c by 4
• add -5 to the quotient.

To find the value of "c", we "undo" these operations in reverse order. To undo the addition of a number, we add the opposite of the number. So, we will first
• add 5 to the equation
This gives
\dfrac{c}{4}-5+5=4+5\\\\\dfrac{c}{4}+0=9\\\\\dfrac{c}{4}=9

Now, the next operation that we need to undo is the division by 4. We can undo that by multiplying the equation by 4. So, we will next
• multiply the equation by 4
This gives
4\cdot \dfrac{c}{4}=4\cdot 9\\\\c\cdot \dfrac{4}{4}=36\\\\c \cdot 1=36\\\\c=36

The solution is c = 36.
6 0
3 years ago
Can someone explain how to do this plzz
Luda [366]
You can split this into 2 shapes.

1 of the shapes will be a small square. The dimensions for it would be 4 by 3 (12)

The second shape, the bigger rectangle has the dimensions, 12 by 6 (72)

Now add these two values 12+72 and you get, 84 

you answer is A 84 square inches


4 0
3 years ago
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