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3 years ago

Pls help me I’ll brainlest

Mathematics

2 answers:

Doss [256]3 years ago

8 0

Answer:

-9/y

Step-by-step explanation:

A quotient is the answer to a division.

Because we are working with a variable (y) and we don't know what number it represents, we can only write down what the calculation would be, but we can't get the actual number answer.

enot [183]3 years ago

6 0

Answer:

x = -9/y

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

This is a problem with two unknowns: Max speed of bird A (we name that "A"), and max speed of bird B (we call that "B"). Now we can create two equations with these two unknowns, based on the info provided:

Equation 1): based on the phrase "bird A can travel six times as fast as bird B" we write:

$A=6\,*\, B\\A=6B$

Equation 2): based on the phrase; "the total speeds for these two birds is 224 miles per hour", we write:

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Now, we use the first equation to substitute A in the second equation, ad then solve for the unknown B:

$A+B=224\,\,\frac{mi}{h}\\(6B)+B=224\,\,\frac{mi}{h}\\7B=224\,\,\frac{mi}{h}\\B=\frac{224}{7} \,\,\frac{mi}{h}\\B=32\,\,\frac{mi}{h}$

Now we can solve for the other unknown "A" using the substitution equation and the value of B we just found:

$A=6B\\A=6\,(32\,\,\frac{mi}{h})\\A=192\,\,\frac{mi}{h}$

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