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Sergeu [11.5K]
2 years ago
7

FOR 5 POINTS AND BRAINLIEST... 18x – 4(9 – 5x) + 14 PLEASE SIMPLIFY AND SHOW YOUR WORK!

Mathematics
1 answer:
REY [17]2 years ago
5 0

Answer:

38x-22

Step-by-step explanation:

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In an endurance race, Rachel ran
Reil [10]

Answer:

31\frac{1}{5}\ miles

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

so

The distance is equal to multiply the speed by the time

we have

speed=9\frac{3}{5}\ \frac{miles}{hour}

time=3\frac{1}{4}\ hours

distance=(9\frac{3}{5})(3\frac{1}{4})

Convert mixed number to an improper fraction

9\frac{3}{5}=9+\frac{3}{5}=\frac{9*5+3}{5}=\frac{48}{5}

3\frac{1}{4}=3+\frac{1}{4}=\frac{3*4+1}{4}=\frac{13}{4}

substitute

distance=(\frac{48}{5})(\frac{13}{4})=\frac{624}{20}=31,2\ miles

Convert to mixed number

31.2\ mi=31+0.2=31+\frac{1}{5}=31\frac{1}{5}\ miles

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3 years ago
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2 years ago
Marcus can carry a maximum of 25kg of gravel at one time
olganol [36]

Answer: 60 journeys

Step-by-step explanation:

1 ton = 1000 kgs

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6 0
3 years ago
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60% of what number is 75
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60\% \ of \ x =75 \\\\ \frac{60}{100}*x=75\\\\ \frac{6}{10}=\frac{75}{x} \\\\ \frac{3}{5}*\frac{75}{x} \\\\ x=\frac{5*75}{3} \\\\ x=5*25 \\\\ \boxed{x=125}
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Completely factor the polynomial: x^2 - 13x + 12
posledela

(x-12)(x-1) is the answer.

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3 years ago
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