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3 years ago

I need help asap :):):)

Mathematics

2 answers:

Gwar [14]3 years ago

8 0

It’s the first one.
less than or equal to, makes it a closed circle

levacccp [35]3 years ago

6 0

I think is the 3rd one it goes 6 to the back

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Math help !!! I don't have answer choices so show the work please :)

11Alexandr11 [23.1K]

Im not sure but I think its Option I

8 0

3 years ago

Could someone help me out with these problems? Sorry

AleksandrR [38]

Answer:

3. 63°

4. x = 13

Step-by-step explanation:

3. The exterior angle is equal to the sum of the opposite interior angles.

118° = (4x +7)° + (6x -9)°

120 = 10x . . . . . . . . . divide by °, add 2

12 = x

m∠K = (6x -9)° = (6·12 -9)°

m∠K = 63°

4. Corresponding angles are congruent, and the sum of angles in a triangle is 180°.

74° + (5x)° + (3x+2)° = 180°

8x = 104 . . . . . . . . . . . . . . . divide by °, subtract 76

x = 13 . . . . . . . . . . . . . . . . . .divide by 8

8 0

4 years ago

The percent increase from 18 to 26 is about...?

Shalnov [3]

Answer:

≈44.44%

Step-by-step explanation:

≈44.44%

To solve this, we can use a simple proportion.

Assuming 18 = 100%...

$\frac{18}{100}=\frac{26}{x}$

Then, using cross multiplication...

$18x=100(26)$

$18x=2600$

Now divide 18 from both sides.

x ≈ 144.44

Now subtract 100 from ≈144.44, leaving us with

≈44.44%

3 0

3 years ago

Find cot theta if csc theta = sqrt17/4 and tan theta >0.

Lorico [155]

Answer:

$tan \theta = 4$

Step-by-step explanation:

We know that

$cosec \theta = \frac{hypotenuse }{opposite }$

Given :

$cosec \theta =\frac{\sqrt{17}}{4}\\$

So 4 is the opposite side of theta.

$tan \theta = \frac{opposite}{adjacent}$

We use the Pythagorean theorem to find for the adjacent side.

$a = \sqrt{17 - 4^2} = \sqrt{17-16} = 1$

$Therefore, \ tan \theta = \frac{4}{1} = 4$

7 0

3 years ago

Which of the following parabolas opens down?

Veseljchak [2.6K]

ANSWER

The correct answer is C.

EXPLANATION

The directrix of the parabolas are parallel to the x-axis.
This means that, the orientation of the parabola is parallel to the y-axis.
We compare the focus and the directrix to determine whether the parabola opens downwards or upwards.
If the directrix is above the focus, then the parabola opens downwards.
On the other hand if the directrix is below the focus , then the parabola must open upwards.
If you look at option C, y=-2 isthe directrix. The focus is (3,-5). Since the the y-value of the focus , -5 is less than y=-2 which is the directrix, this parabola must open down.

The correct answer is C.

3 0

3 years ago