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Sergio [31]
3 years ago
6

PLEASE HELP ME OUT I NEED HELP

Mathematics
1 answer:
BARSIC [14]3 years ago
7 0

Answer:

Angle ABC should equal 68.8 degrees.

Step-by-step explanation:

You begin by finding the angle ACB.  Which is 34.  This is because we are given angle ACD = 146.  ACD and ACB are supplementary angles so together they would equal 180.  180-146 = 34 hence why ACB is equal to 34.  Next, we need to find the values for y in order to solve for angle ABC, we can do this by using this simple equation.

(5y+3) + (4y+8) = 146.

The reason we use 146 is that the measure of all interior angles in a triangle is 180 and since we already know one of those angles is 34 then the remaining 2 angles would add up to equal 146.  Continuing on, using algebra we are able to understand that solution to this equation is y = 15.2 (repeating).

Finally, to solve for angle ABC we just need to replace y with the new value we found.  The equation for this is, 4(15.2) + 8 = angle ABC.  Through simple algebra, we are then able to find that angle ABC must equal 68.8

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What is 11/30.8 please help
Blizzard [7]

Answer:

Decimal form to nearest hundredth= 0.36

percent form to nearest tenth= 35.7%

Improper fraction= 11/30.8

7 0
3 years ago
Find two numbers with a sum of 20 and a difference of 14
sergey [27]

Find two numbers with a sum of 20 and a difference of 14


Make two equations

X+Y=20

X-Y=14


Now add x since y cancels out and add 20+14 To end up with

2x=34


Now divide 2 both sides to get x alone

2x/2=34/2


X=17


Now substitute x answer to first equation and solve for y

17+y=20


Subtract 17 both sides

Y= 3

Your two numbers are

3 and 17

4 0
3 years ago
A bicycle tire has a radius of 13.25 inches. How far will the bicycle travel in 40 rotations of the tire?
Effectus [21]

Answer:

it will travel 69 feet on the bike

Step-by-step explanation:

8 0
3 years ago
B)
ollegr [7]

Answer:

P + Q = 1

Step-by-step explanation:

Given: \frac{1+\sqrt{3} }{1-\sqrt{3} }  = P - \sqrt{Q}

This is a question on surd, so we need to rationalize the denominator to have;

\frac{1+\sqrt{3} }{1-\sqrt{3} }  * \frac{1+\sqrt{3} }{1+\sqrt{3} } = \frac{1+\sqrt{3}+\sqrt{3}  + 3}{1+\sqrt{3}-\sqrt{3} -3 }

   = \frac{4+ 2\sqrt{3} }{1-3}

   = \frac{4+2\sqrt{3} }{-2}

   = -2 - \sqrt{3}

Thus,

-2 - \sqrt{3} = P - \sqrt{Q}

⇒ P = -2 and Q = 3

Therefore, the value of P + Q = -2 + 3

                                                 = 1

Thus,

P + Q = 1

5 0
3 years ago
In ΔNOP, the measure of ∠P=90°, ON = 41, PO = 40, and NP = 9. What ratio represents the cosine of ∠N?
hichkok12 [17]
Ratio for the cosine of angle N = 9/41

Method is attached

8 0
2 years ago
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