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Kamila [148]
3 years ago
8

Mary and Alice are playing a card game. Mary has 21 points. She has 9 points less than Alice.How many points, p, does Alice have

?
Mathematics
2 answers:
MrMuchimi3 years ago
8 0
Mary has 21, Alice 9 points more than Mary. 21+9=30. The correct answer is Alice has 30 points. 
hodyreva [135]3 years ago
3 0
21+9=30, so Alice has 30 points.

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Help someone please ASAP
Klio2033 [76]

1.

3 x 4 = 12

3 + 4 = 12

The two integers a and b are : 3 and 4


2.

-4 x 1 = -4

-4 + 1 = -3

The two integers a and b are : -4 and 1


3.

-3 x -3 = 9

-3 + -3 = -6

The two integers a and b are : -3 and -3


There you go! I really hope this helped, if there's anything just let me know! :)

7 0
3 years ago
I dont know how to find x​
Verdich [7]
Simplify both sides:

x
—- = -9
4

now isolate the variable (x):

x= -9 • 4
x= -36
4 0
3 years ago
How much money will you have if you started with $1200 and put it in an account that earned 7.3% every year for 10 years?
andrezito [222]
So an exponential equation is gonna be used for this problem. The formula for such is y=ab^x , in which the a variable is the initial value and the b variable is the growth/decay rate.

For this situation, 1200 is gonna be your a variable since you've started out with it. And as for your b variable, its gonna be 107.3%, or 1.073, since it's increasing.

Your equation should look like this: y=1200(1.073)^x and from here just plug in 10 into the x variable and solve.

Multiply (1.073)^10 (don't round answers until the end), and take that answer and multiply it with 1200, your answer should be $2427.61.

y=1200(1.073)^{10} \\ y=2427.61
8 0
3 years ago
Three numbers between 80 and 100 are prime numbers. What numbers are they? Eight numbers between 31 and 41 are composite numbers
Flura [38]
83, 89, and 97 are three primes between 80 and 100.

The primes between 30 and 50 are 31, 37, 41, 43, and 47, all of which are odd.  All other numbers between 30 and 50 are composite.

To mentally find 2*50*25, you could either first multiply 25 by 2, to get 50*50, which can easily be calculated as 2500, or you could multiply the 50 by 2, for a result of 100*25, which is clearly also 2500.
5 0
3 years ago
Use the graphing calculator to graph the quadratic function y=2x^2 + 2x -40. what are the zeros of the function
ahrayia [7]

Answer:

The zeroes of this function are x=-5 and x=4

3 0
3 years ago
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