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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!

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BRIA is a rectangle. AN=5. NR=x-3. please solve for x, NR, and BI
Lena [83]

Answer:

x=8

NR=5 units

BI=10 units

Step-by-step explanation:

In  a rectangle BRIA

AN=5 units

NR=x-3

We have to solve for x , NR and BI.

We know that

Diagonals of rectangle bisect to each other.

BI and AR are the diagonals of rectangle BRIA and intersect at point N.

AN=NR

5=x-3

x=5+3=8

x=8

Substitute the value of x

NR=8-3=5

By property of rectangle

BI=AR=AN+NR=5+5=10 unit

BI=10 units

7 0
3 years ago
Half-life formula: A = A0(0.5) t/h
Dahasolnce [82]

Answer: the answer is 4

Step-by-step explanation:

when looking for the half life, it says to look for when the initial amount is half of what it used to be, because it is 100, 100 divided by 2 is 50, and when looking at the hours (x value) for 50 it says 4.

8 0
3 years ago
Read 2 more answers
ANSWER AND EXPLAIN FOR BRAINLIEST :)
Ksenya-84 [330]

Answer: this is what i can tell you if it is a right triangle then you will di 90 - your numbers but if it is not a right triangel then you will do 180 instend  then when you get the answer you add it with those numbers but not with the 90 or 180

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Given regular pentagon ABCDE, what are the coordinates of vertex C?
nata0808 [166]

Answer: a

Step-by-step explanation: C is in quadrant 1 and quadrant 1 is (+,+)

6 0
3 years ago
1. How many degrees is x<br> .x<br> 41<br> 82<br> 20.5<br> o<br> 41<br> О<br> 10
Alja [10]

Answer:

Option (1)

Step-by-step explanation:

By the inscribed angle theorem inside a circle,

"Measure of an inscribed angle is half the measure of the intercepted arc"

\frac{1}{2}[m(arc AB)] = m(∠ABC)

m(arc AB) = 2[m(∠ABC)]

x = 2(41°)

x = 82°

Option (1) is the correct option.

5 0
2 years ago
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