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Zielflug [23.3K]
3 years ago
13

Write and solve a proportion to answer the question.

Mathematics
1 answer:
svet-max [94.6K]3 years ago
6 0
A/78 = 25/100 . . . . the equation
a = 78*25/100 = 19.5

19.5 is 25% of 78
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What facts are true for the graph of f(x) = 4x5^x
sashaice [31]
I think you need to add a picture?
5 0
3 years ago
The equation for a parabola has the form y = ax2 + bx + c, where a, b, and c are constants and a ≠ 0. find an equation for the p
sattari [20]
To solve the problem, substitute the given points for x in the given equation to get

-10=(-1)^2a+(-1)b+c\Rightarrow-10=a-b+c \\ -6=(1)^2a+(1)b+c\Rightarrow-6=a+b+c \\ -13=(2)^2a+(2)b+c\Rightarrow-13=4a+2b+c

Solving the three equations simultaneously, we have:

a = -3, b = 2 and c = -5

Therefore, the required equation is

y=-3x^2+2x-5
7 0
3 years ago
Rudy, Maria, and Tito have a total of x textbooks Rudy has 6 textbooks andTito and Maria each have y textbooks. How many textboo
shtirl [24]

Answer:

Tito have \frac{x-6}{2} textbooks in terms of x

Step-by-step explanation:

Rudy has 6 textbooks

We are given that Tito and Maria each have y textbooks

So, Tito has no. of books = y

Maria has no. of books = y

So, total number of textbooks = 6+y+y=6+2y

We are given that Rudy, Maria, and Tito have a total of x textbooks

So,6+2y=x

So, 2y=x-6

y=\frac{x-6}{2}

Hence Tito have \frac{x-6}{2} textbooks in terms of x

6 0
3 years ago
Explain the difference between the opposite of a number and the absolute value of a number
Tanya [424]

Opposite number is like 8 and -8. And absolute value is like -8 and 8 or 9 and 9. The absolute value is always positive.

7 0
3 years ago
A merchant buys a television for $125 and sells it for $75 more.What is the percent of markup?
cestrela7 [59]
Since he sold it for $75 more,

% Mark Up = Mark Up/ Cost Price  x 100%

% Mark Up =   75 / 125 x 100%      =   0.6  x 100% = 60%

Percent Mark Up = 60%
Hope this helps :)
3 0
3 years ago
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