All categories

3 years ago

What is the measures of angle ECD? Please show work.

Mathematics

2 answers:

bazaltina [42]3 years ago

6 0

The anser is 40

the resense is verticle angle are congrounent.

madreJ [45]3 years ago

4 0

The answer is D. 80°. Angle B is 60 because the angle is adjacent. That makes 60 the vertical angle for the second angle in the triangle with the 40. Since we know two of the angles, we add them together to get 100. 180-100 is 80°

You might be interested in

George and Carmen went on a bicycle trip. They took a bus to their starting point and then biked the rest. They traveled 350 kil

wlad13 [49]

Total distance covered by George and Carmen
x + y = 350
And they biked 80 kilometers more than they bussed
80 + y = x 
Putting the value of x=80 + y in x + y = 350:
We get:
80 + y + y = 350 
2y = 270 
y = 135 km

Substituting y = 135 in x + y = 350 
x + 135 = 350
x = 215 km 

Thus George and Carmen biked for 215 km and bussed for 135 km.

4 0

2 years ago

The discount on a pack of socks is 15%. It is on sale for $17. What is the original price of the pack of socks?

Aneli [31]

Answer:

$19.55

Step-by-step explanation:

17*0.15=2.55

17+2.55=19.55

4 0

2 years ago

You travel from point A to point B in a car moving at a constant speed of 70 km/h. Then you travel the same distance from point

tankabanditka [31]

Answer:

Yes, the average speed for the entire trip from A to C is equal to $80\frac{km}{h}$

Step-by-step explanation:

The average speed of an object is defined as the distance traveled divided by the time elapsed. Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time. For the special case of straight line motion in the x direction, the average velocity takes the form:

$V_a_v_e_r_a_g_e=\frac{x_2-x_1}{t_2-t_1}=\frac{Δx}{Δt}$

If the beginning and ending velocities for the motion are known, and the acceleration is constant, the average velocity can also be expressed as:

$V_a_v_e_r_a_g_e=\frac{V_1+V_2}{2}$

We Know that:

$V_1=70\frac{km}{h} \\\\V_2=90\frac{km}{h}$

Replacing the values:

$V_a_v_e_r_a_g_e=\frac{70+90}{2} =\frac{160}{2}=80\frac{km}{h}$

5 0

2 years ago

Simplyfiy3 3/4 x 1 1/5

Troyanec [42]

Answer:

15/4 6/5

Step-by-step explanation:

there simplified

7 0

2 years ago

Graph a line that goes through the points (−2,1) and (4,−2) .

Zina [86]

Just find the points on the graph and it will create a line. For (-2,1) on the graph go left two time and up one. For (4,-2) go right four times and down two times. Then connect the dots. Hope this helps!

6 0

3 years ago