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Makovka662 [10]
3 years ago
8

Consider parallelogram ABCD. Choose all of the statements which must be true

Mathematics
2 answers:
Crazy boy [7]3 years ago
5 0

The answers are 1, 2, and 4. Look at the parallelogram's angles to be sure.

stiv31 [10]3 years ago
3 0

Answer:

AE=EC

\angle ADB \cong \angle CBD

m\angle ADC + m\angle DCB = 180\°

Step-by-step explanation:

In the given parallelogram, we know that

AD \parallel BC\\AB \parallel DC

From this parallels and having segment DB as a transversal, we have

\angle ADB \cong \angle CBD by alternate interior angles.

Then, we have

AE=EC by givens.

Finally, we have

m\angle ADC + m\angle DCB = 180\° , by consecutive interior angles, which are supplementary by definition.

Therefore, the right answers are

AE=EC

\angle ADB \cong \angle CBD

m\angle ADC + m\angle DCB = 180\°

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Find the value of x in the triangle shown below
olga nikolaevna [1]

Answer:

102

Step-by-step explanation:

it is an isosceles triangle as two sides are equal i.e 3.3 so angles opposite to equal sides are also equal so 39 plus 39 plus x = 180°

78 plus x =180

x=180-78

x=102°

hope it helps

8 0
3 years ago
THEIR AGES
snow_tiger [21]

Answer:

Tom’s age is 7 years

Mary’s age is 13 years

Step-by-step explanation:

Since we do not know the ages, let’s represent the ages by variables at first.

Let m represent mary’s age will t represent Tom’s age.

Now, let’s proceed to have equations.

Adding square of Tom’s age (t^2) to mary’s age give 62

t^2 + m = 62 •••••••(i)

Adding square of mary’s age (m^2) to Tom’s age give 176

m^2 + t = 176 •••••••(ii)

Now, to get the individual ages, we will need to solve both equations simultaneously.

Solving both equations simultaneously without mathematical softwares can be a little hard.

By the use of mathematical software ( wolfram alpha to be specific), we can input both equations and allow the software to solve.

By inputing these equations, we have the values of t to be 7 and m to be 13

And if we try to check by inspection, we can see that these values are actually correct.

7^2 + 13 = 62

13^2 + 7 = 176

6 0
3 years ago
Charlie's eraser has a mass of 9 grams. How many milligrams is the eraser?
Vadim26 [7]

Answer:

9000 milligrams

Step-by-step explanation:

One gram is the <em>equivalent of 1000 milligrams</em>.

So, <em>9 grams is 9*1000 milligrams</em>, which is 9000 milligrams.

8 0
3 years ago
Read 2 more answers
Help please i rlly need it
jonny [76]
The answer is C.7/3 pi ft lmk if you want more answers
8 0
3 years ago
I need help with this
Harlamova29_29 [7]

Answer:

50 degrees.

Step-by-step explanation:

The three angles make up a straight line angle which = 180 degrees, so:

C = 180 - 65 - 65

= 50 degrees.

7 0
2 years ago
Read 2 more answers
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