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Paha777 [63]
3 years ago
10

John's race car memorabilia rose in value 6% last year. It is now worth $141.12. What was it worth a year ago? A. $84.67 B. $85.

20 C. $133.13 D. $134.65
Mathematics
1 answer:
katen-ka-za [31]3 years ago
3 0
1.06 x A = 141.12 

A = 133.13 

the answer is C 
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Solve the equation: -7/10 = 3a/4 - 13/20?<br><br> Help pleaseeee! Thanks
poizon [28]

Answer:

Solving the equation -\frac{7}{10}=\frac{3a}{4}-\frac{13}{20} we get: \mathbf{a=-\frac{1}{15} }

Step-by-step explanation:

We need to solve the equation:

-\frac{7}{10}=\frac{3a}{4}-\frac{13}{20}

And find the value of a

Solving the equation: -\frac{7}{10}=\frac{3a}{4}-\frac{13}{20}

First we will be Switching sides

\frac{3a}{4}-\frac{13}{20}=-\frac{7}{10}

Now, for finding value of a we will be adding 13/20 on both sides

\frac{3a}{4}-\frac{13}{20}+\frac{13}{20}=-\frac{7}{10}+\frac{13}{20}

\frac{3a}{4}=-\frac{7}{10}+\frac{13}{20}

Now, on right hand side, Taking LCM of denominators i.e 10 and 20, we get 20 and simplifying:

\frac{3a}{4}=\frac{-7*2+13}{20}\\\frac{3a}{4}=\frac{-14+13}{20}\\\frac{3a}{4}=\frac{-1}{20}

Now, multiply both sides by 4/3

\frac{3a}{4}\times \frac{4}{3} =\frac{-1}{20}\times \frac{4}{3}\\a=\frac{-1}{5}\times \frac{1}{3}\\a= \frac{-1}{15}

So, solving the equation -\frac{7}{10}=\frac{3a}{4}-\frac{13}{20} we get: \mathbf{a=-\frac{1}{15} }

4 0
3 years ago
Evaluate 3/2y-3+5\3 z when y =6 and z =3.
agasfer [191]

Answer:

49/4 or 12.25

Step-by-step explanation:

+ We replace y= 6 and z= 3 into this expression: 3/2y-3+5\3 z

+ We find that: 3/2y-3+5\3 z= \frac{3}{2*6} -3+5*3= \frac{1}{4} -3+15 = \frac{1}{4} +12=\frac{49}{4} = 12.25

The answer is 49/4 or 12.25

Have a good day.

6 0
3 years ago
Please Solve All FIRST ONE IS BRAINLEISS!
Vinvika [58]

Since a cube has 6 faces, just divide the total surface area by 6 to find the area of 1 face.

96 / 6 = 16

So, the answer is: The area of one face is 16 cm!

3 0
3 years ago
PLEASE HELP Which function represents a line with a slope of negative 4 and a y-intercept of negative 2
ivann1987 [24]

Answer:

C

Step-by-step explanation:

both the slope and y intercept are negative so therefore it has to be -4x because that is what it said the y intercept is negative e so -2 so the answer is C)y=-4x-2

6 0
4 years ago
What is the value of x? Enter your answer in the box. x = °
Elodia [21]
Answer: 90°
Explanation: the sum of all the angles in a triangle = 180. So 70 + 30 = 90 and 180-90=90
3 0
3 years ago
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