All categories

2 years ago

Determine the measure of ∠DBC. answers: 1) 130° 2) 115° 3) 230° 4) 65°

Mathematics

2 answers:

Norma-Jean [14]2 years ago

5 0

Answer:

65 degrees

Step-by-step explanation:

65 degrees

it is 65 because of the vector relationship: 30 + 100 = 130. 130/2=65 degrees

ryzh [129]2 years ago

4 0

Answer:

115

Step-by-step explanation:

The total circle is 360 degrees. The sum of the arcs of the circle is 360

Arc DC = 360 - Arc CB - Arc BC

DC = 360 -30-100

DC =230

Inscribed Angle =1/2 Intercepted Arc

<DBC = 1/2 CD

<DBC = 1/2 (230)

= 115

You might be interested in

Can someone help me with these two

Leviafan [203]

Answer: I believe it is D..

3 0

3 years ago

What is the value of x?<br><br><br><br> Enter your answer in the box.

inna [77]

The 3 inside angles of a triangle need to equal 180 degrees.

Since you are given 2 angles, subtract both of those from 180 to find X.

X = 180 - 70 - 30 = 80 degrees.

X = 80

7 0

2 years ago

Given the function defined in the table below, find the average rate of

AURORKA [14]

Answer:

Average rate of change = $\frac{2}{5}$

Step-by-step explanation:

Average rate of change of a function 'f' in the interval a ≤ x ≤ b is given by,

Average rate of change = $\frac{f(b)-f(a)}{b-a}$

We have to find the average rate of change in the interval 20 ≤ x ≤ 65

From the table attached,

f(65) = 32

f(20) = 14

Average rate of change = $\frac{32-14}{65-20}$

= $\frac{18}{45}$

= $\frac{2}{5}$

Therefore, average rate of change in the given interval is $\frac{2}{5}$ .

7 0

2 years ago

Jessica went to the mall on Saturday to buy clothes she spent $848 on a shirt and 408 dollars on pants in total how much money d

amid [387]

Answer:

Step-by-step explanation: the money that Jessica spend on clothing is 1256

3 0

2 years ago

How do I solve this?

ra1l [238]

Answer:

(-6,1) (2,7)

Step-by-step explanation:

y =x+5

y = x^2 +5x-7

Set the two equations equal since y=y

x+5 = x^2 +5x -7

Subtract x from each side

x-x+5 = x^2 +5x-x -7

5 = x^2 +4x -7

Subtract 5 from each side

5-5 = x^2 +4x -7-5

0 = x^2 +4x-12

Now we can factor the right side

What 2 numbers multiply to -12 and add to +4

6*-2 =-12

6-2 =4

0 = (x+6) (x-2)

Using the zero product property

x+6=0 x-2=0

x=-6 x=2

We need to find y for each value of x

y = x+5 y = x+5

y = -6+5 y = 2+5

y =1 y = 7

4 0

2 years ago