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ExtremeBDS [4]
3 years ago
10

A stack of pennies and dimes has a total value of $2.31. How many dimes are in the stack if there are twice as many dimes as pen

nies?
Mathematics
2 answers:
bixtya [17]3 years ago
7 0
2 dollars in dimes i'm guessing and 31 pennies and what grade level this suppose to be
Valentin [98]3 years ago
6 0
Pennies are worth 1 cent so 2.3(1) there is one penny. =2 dimes 
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Please help!!!
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Check bolded below

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6 0
2 years ago
Read 2 more answers
What is the component form of the vector whose tail is the point (-3,2) and whose head is the point (1, -6)?
Bess [88]

Answer:

  (4, -8)

Step-by-step explanation:

The components of a vector are found by subtracting the tail from the head.

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  Head - Tail = (1, -6) -(-3, 2) = (1 -(-3), -6 -2) = (4, -8)

⇒ The component form is (4, -8), or maybe 4<em>i</em> -8<em>j</em>.

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4 0
2 years ago
In a group of 42 students, 9 study both Art and Biology.
LUCKY_DIMON [66]
Answer:
The probability the student studies Art and
Biology is 0.2143.
Step-by-step explanation:
Denote the events as follows:
A = a students studies Art
B= a students studies Biology
The information provided is:
N = 42
n (An B) = 9
n (A' n B) = 10
n (A' n B') =7
Then the number of students who study Art
but not Biology is:
n(An B') = N -n (An B) -n (A' nB) - n (A'n B')
= 42 - 10 - 7 - 9
= 16
The number of students who study Art but
not Biology is 16.
Compute the probability the student studies
Art and Biology as follows:
P(ANB)
n(ANB)
= 0.2143
Thus, the probability the student studies Art
and Biology is 0.2143.
3 0
2 years ago
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