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kvv77 [185]
2 years ago
7

In the figure, ∠ABD = 50° and ∠BCD = 60°. Calculate ∠ADC and ∠ADO.​

Mathematics
1 answer:
Brums [2.3K]2 years ago
5 0

Answ

Step-by-step explanation:

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How many digits are there in the repeating block for the decimal equivalent<br> of 3 over 7?
Sindrei [870]

Step-by-step explanation:

\text{By long division, we know that}

\frac37=0.425871425871425871\ldots

\text{Observing the pattern, we know the repeating block is }\overline{425871}\text{. Therefore, there are 6 digits in the repeating block}

7 0
3 years ago
A rock is thrown from the top of a tall building.The distance in feet between the rock and the ground t seconds after thrown is
marusya05 [52]

Answer:

0.448 seconds

Step-by-step explanation:

d = -16t² -4t + 412

find t when d = 407

substituting d = 407 into the equation:

407 = -16t² -4t + 412 (subtract 407 from both sides)

-16t² -4t + 412 - 407 = 0

-16t² -4t + 5 = 0 (multiply both sides by -1)

16t² + 4t - 5 = 0  

solving using your method of choice (i.e completing the square or using the quadratic equation), you will end up with

t = (-1/8) (1 + √21)= -0.70 seconds (not possible because time cannot be negative)

or

t = (-1/8) (1 -√21) = 0.448 seconds (answer)

4 0
3 years ago
What whole number is equivalent to 8/2
svetoff [14.1K]
4 is the whole number equivalent.  When dealing with an improper fraction or one that is "top heavy" you take the denominater (the bottom number) unto the numerator.
 Two(2)goes into 8, 4 times, making it whole!
7 0
3 years ago
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Picture `: what is the value of x?
Sphinxa [80]

Subtract the sum of the two angles from 180 degrees. The sum of all the angles of a triangle always equals 180 degrees. Write down the difference you found when subtracting the sum of the two angles from 180 degrees. This is the value of X.
3 0
3 years ago
How do you simplify 4/20
Anna71 [15]
\sf \frac{4}{20}~\underrightarrow{\sf ~simplify~by~4~~}~\frac{4:4}{20:4} =\boxed{\sf  \frac{1}{5} }
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3 years ago
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