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hjlf
2 years ago
14

Help plz which is right

Mathematics
2 answers:
tankabanditka [31]2 years ago
7 0

Answer:

B

Step-by-step explanation:

Virty [35]2 years ago
5 0

Answer:

I think the anwser is

<h2>B.2cot x sec x</h2>

<h2><em><u>HOPE</u></em><em><u> </u></em><em><u>IT</u></em><em><u> </u></em><em><u>HELPED</u></em><em><u> </u></em></h2>
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The measures of the obtuse angles in the isosceles trapezoid are five more than four times the measures of the acute angles. Wri
emmainna [20.7K]

Answer:

a. i. x + y = 180  (1) and  x - 4y = 5   (2)

ii. The two acute angles are 35° each and the two obtuse angles are 145° each.

Step-by-step explanation:

a. The measures of the obtuse angles in the isosceles trapezoid are five more than four times the measures of the acute angles. Write and solve a system of equations to find the measures of all the angles.

i. Write a system of equations to find the measures of all the angles.

Let x be the obtuse angles and y be the acute angles.

Since we have two obtuse angles at the top of the isosceles trapezoid and two acute angles at the bottom of the isosceles trapezoid, and also, since the sum of angles in a quadrilateral is 360, we have

2x + 2y = 360

x + y = 180  (1)

Its is also given that the measures of the obtuse angles in the isosceles trapezoid are five more than four times the measures of the acute angles.

So, x = 4y + 5   (2)

x - 4y = 5   (2)

So, our system of equations are

x + y = 180  (1) and  x - 4y = 5   (2)

ii. Solve a system of equations to find the measures of all the angles.

Since

x + y = 180  (1) and  x - 4y = 5   (2)

Subtracting (2) from (1), we have

x + y = 180  (1)

-

x - 4y = 5   (2)

5y = 175

dividing both sides by 5, we have

y = 175/5

y = 35°

From (1), x = 180° - y = 180° - 35° = 145°

So, the two acute angles are 35° each and the two obtuse angles are 145° each.

4 0
3 years ago
jackson had 1 and 1/3 gallons of juice he poured 5/6 gallon to share with his friends how much of the juice is left
FromTheMoon [43]
1 1/3 - 5/6

Find common demoninator which is 6.

Then do 2*1=2.

Now you got 2/6 - 5/6 = -3/6

Simplify:

-3/6=-1/2

Then combined answers.

1 - 1/2 = 1/2

Final answer is 1/2


6 0
3 years ago
Read 2 more answers
20 ounces at $7 17 ounces at x dollars
tangare [24]
Make a proportion:
\frac{20}{7}  =  \frac{17}{x}
Then cross multiply and divide to solve.

20x=119

x=5.95

The answer is $5.95
6 0
3 years ago
What is the equation of a line with slope −23 and a y-intercept of −4 ?
Alona [7]

Answer:

its A

Step-by-step explanation:

the y intercept would be -4 and the slope would be -23, put it in y=mx+b form

8 0
3 years ago
On a coordinate plane, point A is 7 units to the left. Point B is at (0, 0). Point C is 7 units to the right. Point D is 7 units
Savatey [412]

Answer:

point a

Step-by-step explanation:

(0,-7) would be left 7 units so its point a

4 0
2 years ago
Read 2 more answers
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