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sergij07 [2.7K]
2 years ago
5

What is the value of \sqrt{21} rounded to the nearest tenth

Mathematics
1 answer:
mixer [17]2 years ago
7 0

Answer:

4.5

explanation:

4.5 x 5(This number is not exactly important, but is used as an example)

Is extremely close to the true square root of 21.

That is 4.58257569495584 <em>unrounded.</em>

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A table with a round top is cut in half so that it can be used against a wall.after it is cut,the edge along the wall is 6 feet
MrRissso [65]

Answer:

The area of the table after it is cut is 12 or 36 because

Step-by-step explanation:

6 times 2= 12 and 6 times 6= 36 so year

4 0
3 years ago
The product of $7d^2-3d+g$ and $3d^2+hd-8$ is $21d^4-44d^3-35d^2+14d-16$. What is $g+h$?
galina1969 [7]
<h2>Answer:</h2><h2>g = 2  and h = -5</h2>

Step-by-step explanation:

To find the product with unknown values of variables, multiply the terms and equate the value to the given product.

(7d^{2} - 3d + g)(3d^{2} + hd - 8) = 21d^{4}  + 7hd^{3} - 56d^{2} - 9d^{3} - 3hd^{2} + 24d + 3gd^{2} + ghd - 8g

(7d^{2} - 3d + g)(3d^{2} + hd - 8)     = 21d^{4}  + (7h-9) d^{3} + (3g-56-3h)d^{2}  + (24+gh)d -8g   ... (1)

Comparing eq(1) to the product given in question,

-8g = -1

g = 2

24 + gh = 14, sub g =2,

24 + 2h = 14

h = -5

3 0
3 years ago
Enrique uses a gift card to buy coffee at a coffee shop. The initial value of the gift card is $20. The function n=20-2.75c repr
expeople1 [14]

Answer:

In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function. Functions were originally the idealization of how a varying quantity depends on another quantity.

Step-by-step explanation:

7 0
2 years ago
An airplane flying into a headwind travels the 1890-mile flying distance between two cities in 3 hours. On the return flight, th
aksik [14]

Answer:

Velocity (against wind) = 1,890 / 3 = 630 mph

Velocity (with the wind) = 1,890 / 2.5 = 756 mph

Plane speed (still air) = 630 + wind speed

Plane speed (still air) = 756 - wind speed

Adding both equations equals

2 * Plane speed (still air) = 1,386

Plane Speed = 693 mph

Source: https://www.1728.org/veloccal.htm


Step-by-step explanation:


4 0
3 years ago
Which of these is false?
coldgirl [10]
B. 21,730 is not greater than 22,341.
4 0
3 years ago
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