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artcher [175]
2 years ago
13

If Robin typed 15 characters in 5 seconds, 30 characters in 10 seconds, and

Mathematics
1 answer:
Svetach [21]2 years ago
4 0

Answer:

robin would type D 60 characters in 20 seconds

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The hypotenuse of a right triangle is 1m longer than twice one of the other two sides. The third side of the triangle is 15m. Fi
Dimas [21]

Let the length of unknown side be x

So, hypotenuse = 2x + 1

By pythagorean theorem ie , a² = b² + c²

(2x + 1)² = x² + 15²

4x² + 1 + 4x = x² + 225

3x² + 4x -224

(3x +28)(x-8)

x = -9.33 , 8

Since, length can't be negative

x = 8

∴Unknown side length = 8 m

Length of hypotenuse = 2 x 8 + 1 = 17 m

Hope it helps now.

4 0
3 years ago
Read 2 more answers
Determine if (-1,9) and (-2,6) are solutions to the system of equations: x + y = 8 x2 + y = 10 A) Both are solutions B) Neither
Dahasolnce [82]

Answer:

D) Only (-1,9) is a solution.

Step-by-step explanation:

x+y =8

x^2 + y = 10

Lets check the first point (-1,9)

Put in x =-1 y =9

x+y =8

-1+9 = 8

8 =8

This works

x^2 + y = 10

(-1)^2 +9 =10

1+9 = 10

10 = 10

This works

Lets check the second point (-2,6)

Put in x =-2 y =6

x+y =8

-2+6 = 8

4=8

This  does not work

We can stop now.  (-2,6) cannot be a solution

7 0
3 years ago
I need this answer asap
antoniya [11.8K]

Answer:

240

Step-by-step explanation:

5 0
3 years ago
Given the universal set U = { dog, cat, fish, snake) and set M is the set of pets in U that are
olga2289 [7]

Answer:

fish and snake are the complement of set m

3 0
3 years ago
Simplify each expression by combining like terms. 7x - 4x + 28
Pepsi [2]
3x + 28

We can combine 7x and -4x because they are like terms. 7x -4x is equal to 3x. Now we rewrite the expression as 3x + 28.
7 0
2 years ago
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