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8090 [49]
3 years ago
14

Help aspaaap...pleaseeeeee

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
6 0

Answer:

Step-by-step explanation:

we wana do the same thing in the last problem

we know that FBD is a straight line so its 180 degrees

and we also know that FBE and EBD make up that straight line

so subtract 180 - 47 = 133

so the answer is 133 degrees

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Please answer this correctly
Ugo [173]

Answer:

24.99

Step-by-step explanation:

If the area of the quarter circle is 38.465, then the equation to find this would be

3.14*r^2 / 4 = 38.465. we solve for r, the radius, and get two solutions. 7 and -7. Obviously the length of the radius can't be -7, so we know the radius is 7.

Now we must solve for the perimeter. The perimeter is equal to 2r + (2*3.14*r)/4

Plugging 7 in as the radius, r, we get 24.99 as our final answer.

8 0
3 years ago
1.Do examples that support a conjecture prove the conjecture to be true?
Fofino [41]

Answer:

A conjecture is an “educated guess” that is based on examples in a pattern. ... However, no number of examples can actually prove a conjecture. It is always possible that the next example would show that the conjecture is false. A counterexample is an example that disproves a conjecture.

8 0
4 years ago
In the sum of two numbers is 20 and their difference is 10 find the numbers​
kodGreya [7K]

"The sum of two numbers is 20" can be translated mathematically into the equation:

x + y = 20.

"... and their difference is 10" can be translated mathematically as:

x - y = 10

We can now find the two unknown numbers, x and y, because we now have a system of two equations in two unknowns, x and y. We'll use the Addition-Subtraction Method, also know as the Elimination Method, to solve this system of equations for x and y by first eliminating one of the variables, y, by adding the second equation to the first equation to get a third equation in just one unknown, x, as follows:

Adding the two equations will eliminate the variable y:

x + y = 20

x - y = 10

-----------

2x + 0 = 30

2x = 30

(2x)/2 = 30/2

(2/2)x = 15

(1)x = 15

x = 15

Now, substitute x = 15 back into one of the two original equations. Let's use the equation showing the sum of x and y as follows (Note: We could have used the other equation instead):

x + y = 20

15 + y = 20

15 - 15 + y = 20 - 15

0 + y = 5

y = 5

CHECK:

In order for x = 15 and y = 5 to be the solution to our original system of two linear equations in two unknowns, x and y, this pair of numbers must satisfy BOTH equations as follows:

x + y = 20 x - y = 10

15 + 5 = 20 15 - 5 = 10

20 = 20 10 = 10

Therefore, x = 15 and y = 5 is indeed the solution to our original system of two linear equations in two unknowns, x and y, and the product of the two numbers x = 15 and y = 5 is:

xy = 15(5)

xy = 75

7 0
3 years ago
Solve the equation 10r – 2 = 28 for r.A.-1B.1C.3D.5
KengaRu [80]
I think answer should be 10 I think please give me brainlest
6 0
3 years ago
Read 2 more answers
Which trigonometric values equal 0? Check all that apply.
deff fn [24]

Answer:

A C D

Step-by-step explanation:

7 0
3 years ago
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