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8_murik_8 [283]
3 years ago
5

Which description does NOT guarantee that a trapezoid is isosceles?

Mathematics
1 answer:
babunello [35]3 years ago
3 0

A trapezoid is isosceles if and only if

(1) The base angles are congruent

(2) The diagonals are congruent

(3) The opposite angles are supplementary

So the description does not guarantee that a trapezoid is isoceles for "Congruent bases".

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At a coffee shop, Polly can choose to earn $12 per hour plus a starting bonus of $100 or she can choose to earn $16 per hour wit
vova2212 [387]

Answer:

For the first option 1h for the second option is 7h and she will earn the same which is 112$

Step-by-step explanation:

12 x 1 = 12 + 100 = 112

16 x 17 =112

5 0
2 years ago
Q3. A bag contains 7 red balls and 3 green balls. A ball is taken out replaced.
ycow [4]

Part (a)

There are 7 red out of 7+3 = 10 total

<h3>Answer: 7/10</h3>

==========================================================

Part (b)

We have 3 green out of 10 total

<h3>Answer: 3/10</h3>

==========================================================

Part (c)

3/10 is the probability of getting green on any selection. This is because we put the first selection back (or it is replaced with an identical copy)

So (3/10)*(3/10) = 9/100 is the probability of getting two green in a row.

<h3>Answer: 9/100</h3>

==========================================================

Part (d)

Similar to part (c) we have 7/10 as the probability of getting red on each independent selection.

(7/10)*(7/10) = 49/100

<h3>Answer: 49/100</h3>

==========================================================

Part (e)

7/10 is the probability of getting red and 3/10 is the probability of getting green. Each selection is independent of any others.

(7/10)*(3/10) = 21/100

<h3>Answer: 21/100</h3>

==========================================================

Part (f)

We have the exact same set up as part (e). Notice how (7/10)*(3/10) is the same as (3/10)*(7/10).

<h3>Answer: 21/100</h3>
7 0
2 years ago
Find the median of the following set of data. 13, 11, 4, 5, 6, 9, 10, 12, 15, 16
klemol [59]
Firstly arrange data from smaller to greater data point:
4 5 6 9 10 11 12 13 15 16
Secondly find the middle value: In our case the number of data is even, so to get the middle value we have to find the mean (average) between 10 & 11, that is 10.5. So the rank of the Median is10.5
8 0
3 years ago
The surface area of a balloon varies directly as the
Sati [7]

Answer:

25π sq. units.

Step-by-step explanation:

3 0
2 years ago
From 16 to 0 percent decrease
11Alexandr11 [23.1K]
Decrease just means getting less. 

Decreased way: 
16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1 

Hope this helped :D


4 0
2 years ago
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