1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
BigorU [14]
3 years ago
12

Please help !! Hurry

Mathematics
1 answer:
irina1246 [14]3 years ago
3 0

Answer:

I am sorry I don't know how to do it

You might be interested in
O is the centre of the circle, EF is a tangent, angle BCE = 28°, angle ACD = 31°
andriy [413]

Answer

a. 28˚

b. 76˚

c. 104˚

d. 56˚

Step-by-step explanation

Given,

∠BCE=28°  ∠ACD=31°  &  line AB=AC .

According To the Question,

  • a. the angle between a chord and a tangent through one of the end points of the chord is equal to the angle in the alternate segment.(Alternate Segment Theorem) Thus, ∠BAC=28°

  • b. We Know The Sum Of All Angles in a triangle is 180˚, 180°-∠CAB(28°)=152° and ΔABC is an isosceles triangle, So 152°/2=76˚

        thus , ∠ABC=76° .

  • c. We know the Sum of all angles in a triangle is 180° and opposite angles in a cyclic quadrilateral(ABCD) add up to 180˚,

Thus, ∠ACD + ∠ACB = 31° + 76° ⇔ 107°

Now, ∠DCB + ∠DAB = 180°(Cyclic Quadrilateral opposite angle)

∠DAB = 180° - 107° ⇔ 73°

& We Know, ∠DAC+∠CAB=∠DAB ⇔ ∠DAC = 73° - 28° ⇔ 45°

Now, In Triangle ADC Sum of angles in a triangle is 180°

∠ADC = 180° - (31° + 45°)  ⇔  104˚

   

  • d. ∠COB = 28°×2 ⇔ 56˚ , because With the Same Arc(CB) The Angle at circumference are half of the angle at the centre  

For Diagram, Please Find in Attachment  

4 0
3 years ago
So sorry to ask another question but I need some help-
Vika [28.1K]

Answer:

14x + 23

Step-by-step explanation:

The lengths of three sides of a triangle are 5x + 9 feet, 2x + 14 feet, and 7x feet.

The perimeter of a triangle: the sum of all of its sides.

5x + 9 + 2x + 14 + 7x

14x + 23

It's the expression of the perimeter of the triangle. Once you will be asked to find x, you'll probably be given the exact perimeter of the triangle.

7 0
2 years ago
Help with this please now
sammy [17]

Answer:

ok dude

Step-by-step explanation:

Wʜᴇʀᴇ ɪs ǫᴜᴇsᴛɪᴏɴ?

7 0
3 years ago
Read 2 more answers
) What would the value of c be when
jasenka [17]

The value of c is 233.3

Step-by-step explanation:

Given equation is:

\frac{18}{20}c-250=-40

To find the value of c, we have to isolate c on one side of the equation

So,

Adding 250 on both sides

\frac{18}{20}c-250+250=-40+250\\\frac{18}{20}c=210

Multiplying by 20 on both sides

20*\frac{18}{20}c=210*20\\18c=4200

Dividing both sides by 18

\frac{18c}{18}=\frac{4200}{18}\\c=233.3333

Rounding off to the nearest one decimal place

c=233.3

The value of c is 233.3

Keywords: Linear Equation, Solution of linear equation

Learn more about linear equations at:

  • brainly.com/question/3799248
  • brainly.com/question/3950386

#LearnwithBrainly

3 0
3 years ago
Plssss help plssssss
OverLord2011 [107]

Answer:

True

Step-by-step explanation:

Just compare the numbers to the dots.

I hope this helps!

pls ❤ and give brainliest pls

5 0
3 years ago
Read 2 more answers
Other questions:
  • Please help with problems 6 and 7.
    13·1 answer
  • Simplify (10^-2)^4 djjdejieoeiieis
    13·1 answer
  • please help asappp!!! i need serious help with this pleaseee. whoever finishes it first and completes it and show how you got it
    6·1 answer
  • Please help! I know the answer but I don’t know how to work it out... Answer is 634cm^3
    9·1 answer
  • Vanessa purchased 2 different 3 1/2 liters bottles of soda and 4 different 2 1/4 liter bottles of juice. how many milliliters of
    12·1 answer
  • Find the missing length indicated?
    5·1 answer
  • What is the measure of
    14·1 answer
  • Which of the following<br> represents 9!<br> A. 9<br> B. 9*8*7*6*5*4*3*2*1<br> C. 9+8+7+6+5+4+3+2+1
    5·1 answer
  • Factorize the following: <br> -x-y=
    14·1 answer
  • Which expression is equivalent to Cosine (StartFraction pi Over 2 EndFraction r) for all values of r?.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!