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Liono4ka [1.6K]
3 years ago
13

In this diagram, m DCB = ???​

Mathematics
1 answer:
Elza [17]3 years ago
7 0

Answer:

  56°

Step-by-step explanation:

The two marked angles are supplementary, so total 180°.

  (2x +8) +(x -2) = 180

  3x +6 = 180 . . . . . . . . . . collect terms

  x + 2 = 60 . . . . . . . . . . . divide by 3

  x = 58 . . . . . . . . . . . . . . subtract 2

∠DCB = x-2 = 58 -2

∠DCB = 56

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Transform the equation y-2=3(x+1) into standard form.
Anna35 [415]

ANSWER:

The 1st one: -3x + y = 5

ABOUT STANDARD FORM:

  • Ax + By = C
  • A & B & C are integers
  • A & B are both non - zero
  • This form is good to use when wanting to find the x & y intercepts of a line

y - 2 = 3(x + 1)  --- IN POINT SLOPE FORM

y - 2 = 3x + 3

 + 2         + 2

y = 3x + 5 --- IN SLOPE INTERCEPT FORM

-3x  -3x

-3x + y = 5  --- STANDARD FORM


Hope this helps you!!! :)



5 0
3 years ago
Vera has $10$ white socks, $10$ black socks, $10$ brown socks, $10$ blue socks, and $10$ red socks. How many socks (at a minimum
UNO [17]

The minimum number of socks that she needs to get such that a pair is always formed is 5.

<h3></h3><h3>How many socks must she get to be ensured of having a pair?</h3>

We know that she has:

  • 10 white socks.
  • 10 black socks
  • 10 brown socks
  • 10 blue socks.

First, we need to compute the maximum number of socks she needs to take in such a case that no pair is formed.

That will be 4, and represents the case where:

1 white sock, 1 black sock, 1 brown sock, and 1 blue sock are drawn. At that point, no pairs are formed.

Now, if she draws another sock, a pair will always be formed.

From this, we conclude that if she draws 5 socks, always at least one pair will be formed.

If you want to learn more about combinations, you can read:

brainly.com/question/11732255

3 0
1 year ago
PLEASE HELP! <br><br> Which of the following is a polynomial?
Brums [2.3K]

Answer:

C is the polynomial but idk if it's correct or not

5 0
3 years ago
Read 2 more answers
How much would it be worth in 5, 10, 20 years
pochemuha

Answer:

$675

$850

$1200

Step-by-step explanation:

Use formula for simple interest:

A = P (1+rt)

where

A = accrued amount (principal + interest) = what we want to find

P = Principal (initial) amount = Given as $500

r = rate of interest = Given as 7% = 0.07

t = time

For 5 years, t = 5

A = 500 [ 1 + 0.07(5) ] = $675

For 10 years, t = 10

A = 500 [ 1 + 0.07(10) ] = $850

For 20 years, t = 20

A = 500 [ 1 + 0.07(20) ] = $1200

8 0
3 years ago
F(x) = 4x - 9 <br> i need helpp
Masteriza [31]

Answer:

Step-by-step explanation:

10

5 0
3 years ago
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