2 years ago

The degree of the polynomial 10x^3 + 2x^m y - 4y is 3. What is the value of m?

Mathematics

1 answer:

Mumz [18]2 years ago

4 0

Answer:

Step-by-step explanation:

x is 1 and y is 1 and the total is three so 1

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Ali and Ben measured their heart rates. The

Vedmedyk [2.9K]

Answer:

Ali's heart rate is 135 beats per minute

Step-by-step explanation:

Let

x ----> Ali's heart rate

y ----> Ben's heart rate

we know that

$\frac{x}{y}=\frac{15}{17}$

isolate the variable x

$x=\frac{15}{17}y$ ----> equation A

we have

$y=x+18$ ---> equation B

Solve the system by substitution

substitute equation B in equation A

$x=\frac{15}{17}(x+18)$

Solve for x

$x-\frac{15}{17}x=\frac{15}{17}(18)$

$\frac{2}{17}x=\frac{270}{17}$

simplify

$2x=270\\x=135\ beats\ per\ minute$

therefore

Ali's heart rate is 135 beats per minute

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3 years ago