1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Klio2033 [76]
3 years ago
8

PLEASE ANSWER QUICKLY ASAP READ THE QUESTION CAREFULLY PLEASE ​

Mathematics
2 answers:
Anna11 [10]3 years ago
6 0

Answer:

140°

Step-by-step explanation:

total angle of a hexagon is 720. We know already 510°. That leaves 210°. The ratio between the two angles is 2:1, therefore angle CDE is 140° and angle DEF is 70 °

AURORKA [14]3 years ago
4 0

Answer:

140°

Step-by-step explanation:

We know that all of these angles here are part of a hexagon, meaning that their angle measures will all add up to 720°.

We can use what we already know and find what CDE and DEF will add up to.

145+90+160+115=510\\720-510=210

Now, assuming x is the measure of DEF, we can create an equation for this.

x + 2x = 210\\3x = 210\\x = 70

This is the measure of DEF, but it asks for CDE, which is twice the size of DEF. So

70\cdot2=140

We can double check this is right by adding up all the measures.

145+90+160+115+140+70=720

Hope this helped!

You might be interested in
8x=3(x+1)+2<br><br> What’s x?
Maksim231197 [3]

Answer:

8x=3(x+1)+2 : x =1

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
1/4x +4 = 1/2 solve with explanation
IRINA_888 [86]

Answer:

<h3>x = -14</h3>

Step-by-step explanation:

Given the equation

1/4x +4 = 1/2

Solving for x

Subtract 4 from both sides

1/4x +4 - 4 = 1/2 - 4

1/4 x  = (1-8)/2

1/4 x = -7/2

Cross multiply

2x = -7*4

2x = -28

x = -28/2

x = -14

Hence the value of x is -14

3 0
3 years ago
Solve the following equation. 14 + (2x + 7) = 9x x=​
Dvinal [7]

Answer:

x=1

Step-by-step explanation:

14+2x+7=9x

2x-9x=7-14

-7x= -7

x= -7/-7

x=1

3 0
3 years ago
A series contains 18 numbers and has a sum of 4,185. The last number of the series is 275. What is the first number?
N76 [4]
If the series is made up of numbers in an arithmetic progression, you have

\displaystyle\sum_{n=1}^{18}a_n=\sum_{n=1}^{18}(a_1+(n-1)d)=18a_1+153d=4185

where a_1 is the first term and d is the common difference between terms.

Since the last term in the series is a_{18}=275, you have

a_{18}=a_1+(18-1)d\implies a_1+17d=275

Solve the system

\begin{cases}18a_1+153d=4185\\a_1+17d=275\end{cases}

and you'll find that the first term is a_1=190 (with d=5).
5 0
4 years ago
8 is 16% of what?<br> Complete the sentence
zalisa [80]

Answer:

50

Step-by-step explanation:

the answer is 50 becuz it is

3 0
2 years ago
Other questions:
  • The lee family bought their home for $220,000 this year. The equation V = $220,000(1.038)* can be used to find the value, V, for
    13·2 answers
  • Simplifying trigonometric expressions help?
    8·1 answer
  • Cuánto es 10 elevado a la potencia de 12?
    15·1 answer
  • How many lines of symmetry does this drawing have?<br> A.0 <br> B.1<br> C.2 <br> D.3<br> E.4
    7·1 answer
  • Please help ill give brainliest
    8·1 answer
  • Camila invests money in an account paying a simple interest of 3.4% per year. If she invests $50 and no money will be added or r
    14·2 answers
  • If n(U)= 50, n(A)= 30, n(B) = 20 and n(AUB)= 45, find i) n(A) ii) n(B) ii) Express in Venn diagram​
    9·1 answer
  • Which is a true statement about missed payments on a credit report?
    7·1 answer
  • A scientist cools some water at a constant rate. The graph and table show
    14·1 answer
  • John goes to the bank to get a $15,000 loan.The loan has a simple interest rate of 6% and is 4 years long.What is the TOTAL amou
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!