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Hunter-Best [27]
3 years ago
15

Seven less than nine times a number is negative seven. What is the number?

Mathematics
1 answer:
son4ous [18]3 years ago
5 0

Answer:

The answer is 0

Step-by-step explanation:

7 - (9x0)

0-7

-7

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A jar containing only nickels and dimes contains a total of 60 coins. The value of all the coins in the jar is $4.45. Solve by e
borishaifa [10]

Answer: 31 nickels and 29 dimes

<u>Step-by-step explanation:</u>

Nickels (.05): x

Dimes (.10): y


 Value:     .05x + .10y = 4.45 →  -20(.05x + .10y = 4.45)   →   -x - 2y = -89

Quantity:        x  +    y  = 60   →       1(x  +    y  = 60)           →   <u> x  + y </u> = <u> 60 </u>

                                                                                                       -y  = -29

                                                                                                        y  =  29

Next, substitute "29" for "y" into either equation and solve for "x":

x +  y  = 60

x + 29 = 60

x          = 31


5 0
3 years ago
I used the pythagorean theorem.<br><br> Need a second opinion
uysha [10]

Answer:

A.

Step-by-step explanation:

EF^2=18^2-12^2

EF^2=324-144

EF^2=180

EF=root 180

7 0
3 years ago
Please help:) i would appreciate it lol
Svetllana [295]

Answer:

subtotal: $65.00

8% sales tax: $5.20

total: $70.20

Step-by-step explanation:

6 0
3 years ago
Let f(x) = 3x ­- 6 and g(x) = x ­- 2. Find f/g and its domain
Neko [114]
F(x) = 3x-6
g(x) = x-2

so f/g = 3(x-2)/(x-2) = 3

hope this will help you 
7 0
3 years ago
Read 2 more answers
Cora’s kitten weighs 1,200 grams. If he weighed 550 grams at the last visit to the veterinarian’s office, what is the percent in
Neporo4naja [7]

percent increase = (new -original)/original

           

=   (1200-550)/550

650/550

=1 100/550

1 2/11

1.181818

118.18 percent

to the nearest whole number

118 %

8 0
3 years ago
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