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Scrat [10]
3 years ago
10

In ΔCDE, \overline{CE}

Mathematics
1 answer:
abruzzese [7]3 years ago
8 0

Answer:

m\angle CDE=14^o

Step-by-step explanation:

we know that

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

see the attached figure to better understand the problem

so

∠DEF=∠ECD+∠CDE

substitute the given values

(4x+5)^o=(x+9)^o+(x+8)^o

solve for x

Combine like terms

(4x+5)^o=(2x+17)^o

Group terms

4x-2x=17-5

2x=12

x=6

Find the measure of angle CDE

m\angle CDE=(x+8)^o

substitute the value of x

m\angle CDE=(6+8)=14^o

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Can someone help me? And possibley tell me how to solve this as well? I'm totally clueless haha
Bumek [7]

Answer:

? = 3

Step-by-step explanation:

To find the value of ?, substitute one of the ordered pairs from the table [except (0, 0)] into the given formula and solve for ?.

Given formula:

\sf y=\boxed{?} \:x

Substitute x = 1 and y = 3 into the formula:

\sf 3=\boxed{?} \:1

To isolate ? divide both sides by 1:

\implies \sf \dfrac{3}{1}=\dfrac{\boxed{?} \:1}{1}

\implies \sf 3=\boxed{?}

Therefore, ? = 3:

\implies \sf y=3x

Check by inputting another value of x from the table into the found formula and comparing the calculated y-value:

\sf x=-2 \implies y=3(-2)=-6 \quad \boxed{\sf correct}

\sf x=3 \implies y=3(3)=9 \quad \boxed{\sf correct}

5 0
2 years ago
Read 2 more answers
Algunos números dibisibles entre 3 son divisibles entre 4​
Drupady [299]

Answer:

si

Step-by-step explanation:

por ejemplo 12

12÷3=4. 12÷4= 3.

al hacer la división el resultado es exacto o sea que no te sobra nada y no llegas a un número decimal.

4 0
3 years ago
My number has a tens digit that is 8 more than the ones digit. Zero is not one of my digits
kakasveta [241]
If the number only has 2 digits, it could only be 91, because since the tens digit is 8 more than the ones digit, the tens digit is greater than or equal to 8. it cannot be 10 or more, because that would make the number over 100, leaving only 8 and 9. If the tens digit is 8, the ones digit is zero, and since it cannot be zero, then the tens digit must be 9, leaving the ones digit to be 1. So, the final answer is 91.
5 0
3 years ago
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How do you solve this? 2/10 • 9/12
labwork [276]

Answer:

3/20

Step-by-step explanation:

First simplify the fractions

2/10   Divide top and bottom by 2

  = 1/5

9/12  Divide top and bottom by 3

= 3/4

2/10 * 9/12

1/5*3/4

Multiply the top

1*3 = 3

Multiply the bottom

5*4=20

3/20

5 0
3 years ago
An airplane is flying at an altitude of 4000 feet and descends at a rate of 200 per minute. determine whether the altitude is pr
melamori03 [73]
It is porportional because it stays the same,  200 feet per minute
4 0
3 years ago
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