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2 years ago

HELPPP find the value of x !!!

Mathematics

2 answers:

Novosadov [1.4K]2 years ago

6 0

Answer: x= 45 degrees

Steps:

180-135= 45

The angle of a straight line is always 180 degrees.

Korolek [52]2 years ago

3 0

Here’s the correct answer and how I got it :)

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0 = 2x2 - 6x + 4<br> What are the solutions to

Ainat [17]

The answer would be .5

6 0

3 years ago

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Which statements about finding the area of the equilateral triangle are true? Check all that apply.

lara31 [8.8K]

Answer:

The correct options are 1, 2 and 4.

Step-by-step explanation:

The given triangle is an equilateral triangle. All the sides of an equilateral triangle are same. All interior angles are equal with measure 60 degree.

The distance from the center of an equilateral triangle to the midpoint of a side is known as apothem. In the given figure letter a represents the apothem.

Point D is the midpoint of BC,

$b=\frac{BC}{2}=\frac{8.7}{2}=4.35$

Use Pythagorean theorem in triangle COD. So, option 1 is correct.

$OC^2=OD^2+DC^2$

$5^2=a^2+(4.35)^2$

$25=a^2+18.9225$

$a=\pm 2.46526$

$a\approx\pm 2.5$

The distance can not be negative, so the length of the apothem is approximately 2.5 cm. Option 4 is correct.

The line OC bisects the angle C.

$tan(30^{\circ})=\frac{a}{b}$

$\frac{1}{\sqrt{3}=\frac{a}{4.35}$

$a\approx\pm 2.5$

Therefore option 2 is correct.

The perimeter of an equality triangle is

$P=3a=3(8.7)=26.1$

Option 3 is incorrect.

$A=\frac{\sqrt{3}}{4}a^2=\frac{\sqrt{3}}{4}(8.7)^2=32.77$

Option 5 is incorrect.

Therefore options 1, 2 and 4 are correct.

3 0

3 years ago

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I need a answer AS SOON AS POSSIBLE.. thank you :}

nadezda [96]

Answer:

1. c

2. b

3. c

4. a

5. b

6. c

7. c

Step-by-step explanation:

1. to check the congrency normally distance formula is used. if the distances/ length are equal we say that sides are congurent.

2. if the slope of two lines are equal then both the lines are parallel. if the product of the slopes of two lines equal to one then lines will be perpendicular.

3. diagonals bisect or not can be checked by using midpoint formula.

4. equilateral triangle if the distance of each side is equal so, distance formula can be used.

5 0

3 years ago

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Liam is riding his bike at a rate of 7 miles per hour. He wants to beat his own-day riding record. To do so, he has to ride more

Dmitrij [34]

Answer:

Im pretty sure the anwer is B.

Step-by-step explanation:

I really hope this helps! I think this is the answer, Have an AWSOME day :)

7 0

3 years ago

Find the point-slope equation for

Igoryamba

Answer:

y+(21)=-4(x-7)

Step-by-step explanation:

the point slope equation , two point

m=y2-y1/x2-x1

m=23+21/-4-7=44/-11= -4

y+(21)=-4(x-7)

4 0

3 years ago