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rewona [7]
3 years ago
7

Plzzz what is the difference between the 15th square number and the 7th square number​

Mathematics
1 answer:
Vadim26 [7]3 years ago
8 0

Answer:

176

Step-by-step explanation:

15² - 7² = (15+7)*(15-7) = 22*8 = 176

check: 225 - 49 = 176

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PLEASE HELP!!!!! WILL MARK BRAINLIEST!!!
vovangra [49]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
Jolie sends between 22 and 23 text messages per day. Each text message costs $0.89. Suppose Jolie's cellular bill spans a period
kondor19780726 [428]

Answer:

C. $945

Step-by-step explanation:

Cost of 1 cellular bill = (number of text msgs per day) x (cost per text msg) x (number of days in billing period)

in this case, it is given that :

cost per text msg = $0.89

number of texts per day = 22 or 23

billing cycle = 6 weeks = 6 x 7 = 42 days

hence,

Cost of 1 cellular bill = (22 or 23) x $0.89 x 42 days

if she sends 22 messages,

Cost of 1 cellular bill = (22) x $0.89 x 42 days= $822.36

if she sends 23 messages,

Cost of 1 cellular bill = (2) x $0.89 x 42 days= $859.74

if we compare thse 2 numbers that we have calculated with the choices, the closest match would be C. $945. The rest are just too far away in comparison.

8 0
4 years ago
Assume the probability is 1/2 that a child born at any time is a boy and births are independent. What is the probability of the
melisa1 [442]

There are only 23=823=8 possible ways to arrange the genders boy/girl, with repetition. Since the probability of boy and girl are equal, the probability of each of these arrangements are also equal. We can therefore count the number of possible "good" answers, and divide by 8.

There are 3 possible ways to have 1 boy, that being "first/second/third child is boy", so the probability of exactly 1 boy is indeed 3838.

Having at most 2 girls is the opposite of having three girls, so since there are only one way of having three girls, there must be 8−1=78−1=7 ways of having at most two girls, so the probability of at most two girls is indeed 78

8 0
3 years ago
Cho đường tròn tâm O , đường kính AB=13cm , CD=12cm và vuông góc với AB tại H
Studentka2010 [4]

Answer:

b

Step-by-step explanation:

6 0
3 years ago
What is 35÷7(2) equal in PEMDAS method
DIA [1.3K]
The answer is 10, because 35 divided by 7 is five, five times 2 is ten.
6 0
3 years ago
Read 2 more answers
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