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ipn [44]
3 years ago
12

Find the product (r-9)(r+4)

Mathematics
2 answers:
AVprozaik [17]3 years ago
7 0

Answer:

2r - 36

Step-by-step explanation:

r x r = 2r

-9 x 4 = -36

Mrrafil [7]3 years ago
3 0

Answer:

r^{2} -5r-36

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Which of the expressions are equivalent to the one below? Check all that apply 7 (6 + 3)
Alex_Xolod [135]
The answer is 63 because (6+3) is 9 so 7(9) is 63
3 0
3 years ago
For her 1st birthday, Ruth's grandparents invested $1000 in an 18-year certificate for her that pays 10% compounded annually. Ho
Lyrx [107]

Answer:

The certificate will be worth $5,559.92 on Ruth's 19th birthday.

Step-by-step explanation:

The compound interest formula is given by:

A = P(1 + \frac{r}{n})^{nt}

Where A is the amount of money, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit t and t is the time the money is invested or borrowed for.

In this problem, we have that:

P = 1000, n = 1, r = 0.1, t = 18

So

A = 1000(1 + \frac{0.1}{1})^{1*18}

A = 5559.92

The certificate will be worth $5,559.92 on Ruth's 19th birthday.

7 0
3 years ago
A police officer wears a belt that carries an extra 10 pounds on their waistline. The police officer weighs p pounds.
Lelechka [254]

Answer: T = 10p

Step-by-step explanation: Since we don't know what is the total weight, we put the an variable, T to represent the total weight. The 10p means that the poilce officer gained 10 Pounds.

3 0
3 years ago
Two cards are drawn without replacement from a standard deck of 52 cards. What is the probability that one of the cards is red a
alukav5142 [94]
Total cards = 52
Total red cards = 26
Total black cards = 26

P(one red and one black) = P(red and then black)+ P(black and then red)
P(one red and one black) =(26/52)(26/51) + (26/52)(26/51)
P(one red and one black) = 26/51 (Answer A) 

-----------------------------------------------------
Answer: 26/51 (Answer A) 
-----------------------------------------------------
5 0
3 years ago
how many ways are there for choosing 5 states from the top 10 states with the most murders if order is considered? what about if
ANEK [815]
<span>10!/5! =10*9*8*7*6=30,240;; 
If order is not considered, 10C5 =10!/5!5!=252 </span>
8 0
3 years ago
Read 2 more answers
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