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nata0808 [166]
3 years ago
15

Simplify the expression: b2–3b+7+5b

Mathematics
2 answers:
MArishka [77]3 years ago
6 0
The answer is :

4b+7

hope this helps!!
gavmur [86]3 years ago
6 0

Answer:

b2+2b+7

Step by step explanation:

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Alexis has $3.25 in nickels and dimes. The number of dimes is 5 less than twice the number of nickels. Find the number of nickel
jek_recluse [69]

Answer:

15 nickels were there with Alexis

Step-by-step explanation:

Let there be  x nickels

given that

The number of dimes is 5 less than twice the number of nickels.

no of dimes in terms of x = 2*number of nickels - 5 = 2x - 5

we know that

value of 1 nickel = 5 cents

then

value of x nickel = 5*x cents = 5x cents

we know that

value of 1 dime = 10 cents

then

value of 2x-5 dime = 10(2x - 5)  cents = 20x - 50 cents

Total value of x nickel and 2x -5 dimes = 5x + 20x - 50 = 25x - 50

given that

Alexia has total of  $3.25 in nickel and dimes thus  25x - 50 must be equal to $3.25

$1 = 100 cents

$3.25 = 3.25 * 100 cents = 325 cents

Thus,

25x - 50 = 325

25x = 325 + 50 = 375

x = 375/25 = 15

Thus, no of nickels = x = 15  answer

5 0
3 years ago
How many minutes are in 1/12 of an hour?
Mandarinka [93]
The answer is 5 minutes. Simply divide 60 by 12.
3 0
3 years ago
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A truck rental company rents a truck for one day by charging $39 plus $1 per mile. Write a linear model that relates the cost C,
Anika [276]

Answer:

1m+39c=y

Step-by-step explanation:

6 0
3 years ago
NOME:..............................................................................
Rufina [12.5K]
The answer for this problem is b bc it -1/
4 0
3 years ago
If y inversely as x,and y=8 when x=3,find y when x=2
natta225 [31]

Answer:

8-3=5 5+2=y is this good bro

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