Brad used the compatible numbers \( 520 \div 20 \) for an estimate. Which cuotient might he be finding? (a) \( 5,380 \div 59 \) (B) \( 522 \div 21 \) (C) \( 477 \div 31 \) (D) \( 84 \div 9 \)

The resting heart rate \( \left(H R_{\text {rest }}\right) \) is the number of times a heart beats per minute \( (\mathrm{bpm}) \). An average person's \( H R_{\text {rest }} \) is \( 60-90 \mathrm{bpm} \). Problems can result when a person's \( H R_{\text {rest }} \) is below 60 bpm or above 100 bmp . However, professional athletes and meditators can have \( H R_{\text {rest }} \) as low as 40 bpm due to their hearts' ability to pump blood efficiently. As of 2012 , the world's lowest verified \( H R_{\text {rest }} \) was 27 bpm for Martin Brady of the \( U K \). \( H R_{\text {rest }} \) is rarely found by checking a person's pulse for a full minute. More commonly, the pulse is measured for \( 5,6,10,12 \) or 15 seconds and then multiplied by the appropriate factor of 60 . Question 1 If you were to check Martin Brady's pulse for 5 seconds, how many beats would you expect to count? (assuming his world record rate)

b. La compañía telefónica ha utilizado \( \frac{3}{4} \) de un rollo de cable de 800 m durante la primera mitad del año. ¿Cuántos metros de cable de ese rollo le queda disponible para el resto del año?

Diapers cast \$4/ prekage. How many prokeges did Mark buy if he spent \$16?

Factors of \( 56: 1,2,4,7,8,14,28,56 \) Factors of \( 42: 1,2,3,6,7,14,21,42 \) List the common factors: The greatest common factor (GCF)

Select all the perfect squares. - \( \sqrt{361} \) - \( \sqrt{224} \) - \( \sqrt{81} \) \( \sqrt{2} \) \( \sqrt{1} \)