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Alexeev081 [22]
3 years ago
6

Please please helppp!!

Mathematics
1 answer:
MariettaO [177]3 years ago
4 0

Answer:

Step-by-step explanation:

Here we want the side length of x, which is adjacent to the angle 31 degrees. Cosine is the ratio we want because it is adj/hypotenuse.

Here's our basic equation:

cos31=x/17

or

17 * cos31=x

Put this into the calculator and you get around 15.6

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The circumcenter of a triangel is the point equidistant from the vertices of the triangel. True or false
Bingel [31]

Answer:

True

Step-by-step explanation:

The circumcenter is the center of the circumscribing circle, the circle that intersects each of the vertices. Since the points on a circle are equidistant from its center, the vertices of a triangle are equidistant from the circumcenter.

7 0
3 years ago
Two hikers are 55 miles apart and walking toward each other. They meet in 10 hours. Find the rate of each hiker iſ one hiker wal
ExtremeBDS [4]

Answer:

Speed of hikers are 4.4 mph and 7.7 mph

Step-by-step explanation:

Two hikers are 55 miles apart and walking towards each other.

They meet after 10 hours.

Let the speeds of hikers are S and S' mph.

One hiker walks 3.3 mph faster than the other,

S = 3.3 + S'

S' = S - 3.3

Distance traveled by the hiker with higher speed S = Speed × Time

d_1=S\times 10

d_1=10S

Distance traveled by the slower hiker d_2 = (S - 3.3) × 10

Total distance between them = 55 miles

d_1+d_2=55

10S + 10(S - 3.3) = 55

20S - 33 = 55

20S = 88

S = 4.4 mph

Speed of first hiker = 4.4 mph

Speed of second hiker = 4.4 + 3.3 = 7.7 mph

3 0
3 years ago
A = -bcd<br><br>Not sure how I'm suppose to get the answer without dividing first.​
coldgirl [10]

Answer:

-1/cd

b = -a/cd

Step-by-step explanation:

a = -bcd

Multiplication and division are inverse operations

Multiply each side by -1/cd

a* -1/cd = -bcd * -1/cd

-a /cd = b

3 0
3 years ago
PLEASE JUST ANSWER AHHHHHHHHHHHHH
iragen [17]

Answer:

iydjtulsulyzursrusutxulsr

Step-by-step explanation:

2y=6

4 0
3 years ago
Read 2 more answers
Prove that there are no solutions in integers x and y to the equation 2x^2 + 5y^2 = 14
iren [92.7K]
Solve the equation for y using the formula for slope: y + mx + b

2x^2 + 5y^2 = 14
5y^2 = -2x^2 + 14
y^2 = -2/5x^2 + 14/5
y = the sq root of -2x^2/5 + 14/5

There is no integer solution to the square root of a negative number.
5 0
3 years ago
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