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True [87]
3 years ago
15

Math test questions Find the measurement of the unknown angle​

Mathematics
2 answers:
Evgen [1.6K]3 years ago
6 0
The correct answer is 65°
crimeas [40]3 years ago
4 0

Answer:

The unknown angle is 65°

Step-by-step explanation:

Let the unknown angle be y

40°+75°+y = 180°

y = 180°-115°

y = 65°

Therefore, the unknown angle is 65°

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What is AE ? Enter your answer in the box. units Two segments A D and B C intersect at point E to form two triangles A B E and D
spin [16.1K]

Answer:

The length of AE is 20 units.

Step-by-step explanation:

Given two segments AD and BC intersect at point E to form two triangles ABE and DCE. Side AB is parallel to side DC. A E is labeled 2x+10. ED is labeled x+3. AB is 10 units long and DC is 4 units long.

we have to find the length of AE

AB||CD ⇒ ∠EAB=∠EDC and ∠EBA=∠ECD  

In ΔABE and ΔDCE

∠EAB=∠EDC      (∵Alternate angles)

∠EBA=∠ECD      (∵Alternate angles)

By AA similarity, ΔABE ≈ ΔDCE

therefore, \frac{AE}{ED}=\frac{AB}{CD}

⇒ \frac{2x+10}{x+3}=\frac{10}{4}

⇒ 8x+40=10x+30

⇒ x=5

Hence, AE=2x+10=2(5)+10=20 units

The length of AE is 20 units.

5 0
3 years ago
The circumference of a circle is 257 cm. What is the area,<br> in<br> square<br> centimeters
nikdorinn [45]

Answer:

2\pi \times r = c

\pi \times  {r}^{2}  = a

A=5257.76

Step-by-step explanation:

Or use a calculator online.

7 0
2 years ago
Read 2 more answers
Can someone plz help :( I need help asap
erastovalidia [21]

Answer:

x=120, y=160. and is that u in ur pfp

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Which ordered pair is a solution of the equation y = x - 2?
Liula [17]

Answer:

One order pair is  

( 2,0)

Step-by-step explanation:

What ordered pairs are the options?

Pick a value for  

x

and solve for  

y

. Or find the intercepts.

If  

x

=

2

, then:

y

=

2

−

2

⇒

y

=

0

So we have  

(

2

,

0

)

If  

x

=

0

, then:

y

=

0

−

2

⇒

y

=

−

2

Here we have  

(

0

,

−

2

)

You can simply use  

0

for both  

x

and  

y

(intercept) to get the same answer.

8 0
3 years ago
The temperature dropped 4°C every hour for 6 hours. What was the total number of degrees the temperature changed in the 6 hours?
RUDIKE [14]

Answer:

-24 degrees Celsius

Step-by-step explanation:

6 x -4 = -24

5 0
2 years ago
Read 2 more answers
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