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Ede4ka [16]
3 years ago
13

When is a rhombus a rectangle?

Mathematics
2 answers:
andrew11 [14]3 years ago
4 0

Answer:

c. when all angles are right angles

Step-by-step explanation:

zepelin [54]3 years ago
3 0
C. When it’s angles are right angles
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Simplify the ratio 19:114
masha68 [24]
19:114 =  \frac{19}{114} ÷ \frac{19}{19} =  \frac{1}{6} = 1:6 \ \textless \ -answer
8 0
3 years ago
Calculate the area of triangle ABC with altitude CD, given A (6, -2), B (1, 3), C (5, 5), and D (2, 2).
Flura [38]

Answer:

15 units

Step-by-step explanation:

I just took this geometry test with the same question. Its 15

3 0
3 years ago
Read 2 more answers
A = {a, b, c, d}
Helen [10]

Answer:

Johnny is wrong.

A \cup B = \left\{a,b,c,d,e,f,g,h\right\}

Step-by-step explanation:

Johnny is wrong.

A better definition would be: A \cup B is the set of all elements that belong to at least one A or B.

So, the elements that belong to both A and B, like c and d in this exercise, also belong to A \cup B.

So:

A \cup B=\left\{a,b,c,d,e,f,g,h\right\}

4 0
3 years ago
Light travels at approximately 2.998*10^5 kilometers per second. There are 6.048*10^5 seconds in one week. About how many kilome
BartSMP [9]

Answer:

okay, you have pay special attention to time.i.e 60secs = 1 minute, 60 minutes = 1 hour, 24 hours in one day, and 7 days in one week. No. of seconds in one week we are told is 6.1048 x 10 ^5 seconds.  

Step-by-step explanation:

s = d/t [ speed = distance/time]

therefor, rearranging, we get d = s x t

Since speed = 2.998*10^5 Km/s and time = 6.048^10^5

d = (2.998 x 10^5) x (6.048 x10^5) = (2.998 x 6.048) x 10 ^(5+5)

d = 18.131904 X 10^10 km

d = approximately 18.132 x 10^10 km (to 3 decimal places)

6 0
3 years ago
Clara scored a 79 on her history test what grade does she have to get on her next test so she will have a average of a 83
Airida [17]
79 is 4 below 83 so her next grade needs to be 4 above in order to get an average of 83. The answer is 87.
6 0
3 years ago
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