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Anastasy [175]
3 years ago
14

-4/5 + 3/20 dont understand how to solve it

Mathematics
1 answer:
IRINA_888 [86]3 years ago
5 0

Answer:

-13/20

Step-by-step explanation:

-4/5 x 4/4 = -16/20

3/20 x 1/1 = 3/20

-16/20 + 3/20 = (-16 + 3 = -13)

-13/20

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What is the average of 36 and 83 ?
lana [24]
To find the average you add the two numbers together and divide it by two. answer being 59.5
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A person can pay $6 for a membership to the history museum and the go to the museum for just $2 per visit. What is the maximum n
nirvana33 [79]

Answer:The maximum number of visits a member of the history museum can make for a total cost of $40 is 17

Step-by-step explanation:

Let x represent the number if visits that visits the person makes to the museum.

Let y represent the cost of x visits

A person can pay $6 for a membership to the history museum and then go to the museum for just $2 per visit. It means that the total cost, y for x visits will be

y = 2x + 6

For a total cost of $40, y = 40. So

40 = 2x + 6

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3 years ago
The Quotient of 5 times a number and 7 is no more than 10.
Lera25 [3.4K]

Answer:

Our unknown, "a number," will be represented by "x." "The quotient of five times a number and 7" translates to 5x/7. "is no more than" is less than, which we will show using the symbol "<." 10 will remain 10. So, our inequality is 5x/7 < 10

Step-by-step explanation:

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3 years ago
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When a cylindrical tank is filled with water at a rate of 22 cubic meters per hour, the level of water in the tank rises at a ra
Sergeu [11.5K]

Answer:

r=\sqrt{10}\text{ m}

Step-by-step explanation:

We have been given that when a cylindrical tank is filled with water at a rate of 22 cubic meters per hour, the level of water in the tank rises at a rate of 0.7 meters per hour. We are asked to find the approximate radius of tank in meters.

We will use volume of cylinder formula to solve our given problem as:

V=\pi r^2h, where,

r = Radius,

h = Height of cylinder.

Since the level of water in the tank rises at a rate of 0.7 meters per hour, so height of cylinder would be h = 0.7 meters at V=22\text{ m}^3.

Upon substituting these values in above formula, we will get:

22\text{ m}^3=\frac{22}{7}\cdot r^2(0.7\text{ m})

22\text{ m}^3=\frac{22}{10}\cdot r^2\text{ m}

\frac{10}{22}\cdot\frac{22\text{ m}^3}{\text{m}}=r^2

r^2=\frac{10}{22}\cdot\frac{22\text{ m}^3}{\text{m}}

r^2=10\text{ m}^2

Now, we will take positive square root of both sides as radius cannot be negative.

\sqrt{r^2}=\sqrt{10\text{ m}^2}

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Therefore, radius of tank would be approximately square root of 10 m.

5 0
3 years ago
Please help me (NO LINKS)
tatuchka [14]

Answer:

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hope it's what u want

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