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Kamila [148]
3 years ago
11

21 m 17 m Find the area

Mathematics
2 answers:
Burka [1]3 years ago
4 0

Answer:

357

Step-by-step explanation:

zubka84 [21]3 years ago
4 0

Answer:

357 m^2

Step-by-step explanation:

A= b*h

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The figure below shows a rectangle ABCD having diagonals AC and DB. ​
Keith_Richards [23]

Answer:  b) ΔADC ≡ ΔBCD by SAS

<u>Step-by-step explanation:</u>

Step 1: AD = BC                     SIDES are congruent

Step 2: ∠ADC ≡ ∠BCD          ANGLES are congruent

Step 3: DC = DC                    SIDES are congruent

The proof is using Side-Angle-Side (SAS)

Look at the angles in step 2.  These are the triangles you are proving congruency for: ΔADC ≡ ΔBCD

4 0
3 years ago
helen has 30 tickets.Gina has 20 more tickets thank helen.what percent of tickets must Gina give helen so that both of them can
iren [92.7K]
Helen = 30 T (T = tickets)
Gina = 30 + 20 = 50 T

20% of 50 = 10

30 + 10 = 404
50 - 10 = 40

Gina must give 20% of her tickets for them to have equal amount of tickets.

Hope this helps!!
4 0
3 years ago
(b) The perimeter of a rectangular window is 298 cm.
Ronch [10]

Answer:

68

Step-by-step explanation:

81 +81 is 162

298-162=136

136/2=68

3 0
3 years ago
How would you describe a polynomial to some new algebra students
Sergio [31]
<span>An expression of more than two algebraic terms, especially the sum of several terms that contain different powers of the same variable(s).

Source: Google's definition
</span>
5 0
3 years ago
Hannah went swimming after she woke up. It took Hannah 15 minutes to get ready to go swimming. She swam for 30 minutes and then
saul85 [17]

Find the total minutes:

15 + 30 + 25 + 35 = 105 minutes

This is equal to 1 hour and 45 minutes

Subtract 1 hour and 45 minutes from 9:30

She woke up at 7:45 am

4 0
3 years ago
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