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Amiraneli [1.4K]
3 years ago
7

Which sentence expresses the equation 9x=45 in words?

Mathematics
1 answer:
kotykmax [81]3 years ago
4 0

Answer:

The product of a number and 9 is 45

Step-by-step explanation:

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10 pieces or 2/5 i believe so
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Hi i need help asap my parent taught me how to do this equation (x^2-4x)^2+7x^2-28x+12=0 but i still dont understand I really ne
artcher [175]

Answer:

x = 1,  x = 2,  x = 3

Step-by-step explanation:

Hello, please consider the following.

(x^2-4x)^2+7x^2-28x+12=0 \\\\(x(x-4))^2+7x(x-4)+12=0\\\\\text{Let's note }X = x(x-4)\text{ the equation becomes}\\\\X^2+7X+12=0\\\\\text{The sum of the zeroes is -7=-3+(-4) and the product is 12=(-4)*(-3).}\\\\\text{Wo we can factorise.}\\\\X^2+7X+12=X^2+4X+3X+12=X(X+4)+3(X+4)=(X+4)(X+3)=0\\\\X=-4 \ \ or \ \ X=-3

So we need to solve:

x(x-4)=-4 \ \ or \ \ x(x-4)=-3\\\\ x^2-4x-4=(x-2)^2=0 \ \ or \ \ x^2-4x+3=(x-1)(x-3)=0

So, the solutions are x = 2, x = 1, x = 3

Thank you

6 0
3 years ago
What is the domain of a function
maxonik [38]

Domain is the set of values of x.

Notice that in the graph x start from origin x=0 and goes till x=4 which shows x is from 0 to 4.

Hence the domain of the function is 0<x≤4.

Similarly y starts from origin and stop at y=40.

So, range is 0<y≤40.

7 0
4 years ago
Multiply by using suitable rearrangement: 2 × 4 × 8 × 50 × 125. I need this answer. Quick. Ok, How about I give 15 points? Yeah
nlexa [21]

Answer:

2 \times 4 \times 8 \times 50 \times 125 \\  \\  = 400000

7 0
3 years ago
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