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3 years ago

11

A 440 m long road is being repaired. After one day, the workers had repaired 3/4 of the road. What is the length of road left to

be repaired?

1 answer:

Nezavi [6.7K]3 years ago

3 0

440/4=110

110*3=330

330/440 = 3/4

They have repaired 330 meters of the road

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I need help again I’m pretty stuck

ANEK [815]

Answer:

1: 45

3: 45

4: 135

5: 103

6: 77

8: 77

9: 135

10: 45

11: 135

12: 45

13: 77

14: 103

15: 77

16: 103

Step-by-step explanation:

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3 years ago

Write an equation for the situation then solve for x. After paying $7 for a sandwich, John has $11. With how much money did he s

yKpoI14uk [10]

Answer:

x = 18

Step-by-step explanation:

total money = money spent + money left

x = 7+11

x = 18

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3 years ago

In 1 and 2, list multiples of each number to find the LCM of each pair of number.

Tanya [424]

#1

Multiples of 2:

2, 4, 6, 8, <u>10</u>, 12, 14, 16, 18, 20,...

Multiples of 5:

5, <u>10</u>, 15, 20, 25, 30, 35, 40, ...

#2

Multiples of 6:

6, 12, 18, 24, <u>30</u>, 36, 42, 48, 54, 60, ...

Multiples of 10:

10, 20, <u>30</u>, 40, 50, 60, ...

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3 years ago

The profit at a chocolate shop can be represented using the function f(x)=3x−95, where x is the number of chocolate truffles sol

xz_007 [3.2K]

The slope is the constant rate of change. In this case, the number is being multiplied by 3 each time

The slope is 3
“x represents number of chocolate truffles sold each day”
Represents amount of chocolate truffles sold per day

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2 years ago

The GCD(a, b) = 9, the LCM(a, b)=378. Find the least possible value of a+b.

denis-greek [22]

$\mathrm{gcd}(a,b)=9\implies9\mid a\text{ and }9\mid b\implies9\mid a+b$

which means there is some integer $k$ for which $a+b=9k$ .

Because $9\mid a$ and $9\mid b$ , there are integers $n_1,n_2$ such that $a=9n_1$ and $b=9n_2$ , and

$\mathrm{lcm}(a,b)=\mathrm{lcm}(9n_1,9n_2)=9\mathrm{lcm}(n_1,n_2)=378\implies\mathrm{lcm}(n_1,n_2)=42$

We have $42=2\cdot3\cdot7$ , which means there are four possible choices of $n_1,n_2$ :

1, 42
2, 21
3, 14
6, 7

which is to say there are also four corresponding choices for $a,b$ :

9, 378
18, 189
27, 126
54, 63

whose sums are:

387
207
153
117

So the least possible value of $a+b$ is 117.

6 0

3 years ago