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Bingel [31]
3 years ago
6

Can someone please help me!!

Mathematics
1 answer:
GrogVix [38]3 years ago
5 0

Answer:

8. $21 is your constant number, so nothing changes. $5.50 is a number that changes based on how many months have passed. So your equation should be: 21 + 5.50x

9. Since the number 7 is a percentage in this problem, it should be written as .07. Since the total price is unknown, it should be written as x. By using the equation <em>x</em><em> </em><em>*</em><em> </em><em>.</em><em>0</em><em>7</em><em>,</em><em> </em>you have the <u>a</u><u>m</u><u>o</u><u>u</u><u>n</u><u>t</u><u> </u>that should be added to the total price. The final equation should be x * .07 since you have an unknown total price.

10. f(x)= means the same thing as y=, so they should be treated the same. Since f(x)=14, you should plug it into the equation (by putting 14 into any place that you see an x) , giving you f(14)=1/4(14)+10. The final answer should be f(14)=13.5 or f(x)=13.5

11. The dependent variable should be the three facts since they're dependent on the people listed. If they wasn't any people listed, there wouldn't be three facts, therefore making the people listed the independent variable.

Hope this helped!

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4. Find the power set for set A= {a,b,c}.
artcher [175]

Answer:

Remember, the power set of any set S is the set of all subsets of S, including the empty set and S itself.

Then the power set of A=\{a,b,c\} is

\{\emptyset, \{a\}, \{b\}, \{c\}, \{a,b\}, \{a,c\}, \{b,c\}, \{a,b,c\}\}

5 0
3 years ago
A ball is thrown from an initial height of 2 meters with an initial upward velocity of 15/ms . The ball's height h (in meters) a
Irina-Kira [14]
The height that a ball reaches at a certain time t is given by the equation,
           h = 2 - 15t + 5t²
We are asked to compute for the values of t that would allow the ball to reach a height of 7 meters. 

Substitute the 7 to the equation,
         7 = 2 - 15t + 5t²
Transposing,
               5t² - 15t - 7 + 2 = 0
Simplifying,
               5t² - 15t - 5 = 0
Divide the equation by 5,
               t² - 3t - 1 = 0

The values of t can be calculated through the quadratic formula,
             t = (-b +/- sqrt(b² - 4ac))/2a

Substituting, 
             t = (3 +/-sqrt (9 - 4(-1)) / 2(1)
              t = 3.3 or t = -0.30

Since, we cannot have t as a negative number hence, our final answer is:
      <em> t = 3.3 s</em>
4 0
3 years ago
In a basketball tournament, Demitri averaged 12.375 rebounds per game. What is the 12.375 written in expanded form? How is it wr
maria [59]

Standard from- 12.375 = (1×10) + (2×1) + (3/10) + (7/100) + (5/1000)

Number names/Word form- Twelve and three hundred seventy-five thousandths.

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3 years ago
A polynomial is factored using algebra tiles.
melisa1 [442]

NOOO the answer is B on EdgenA polynomial is factored using algebra tiles.

What are the factors of the polynomial?

(x − 1) and (x + 3)

(x + 1) and (x − 3)

(x − 2) and (x + 3)

(x + 2) and (x − 3)uity

3 0
3 years ago
Read 2 more answers
If y=5x-3and 3x-y=-1, what is the value of y?<br> A. 7<br> B. -1<br> C. 2<br> D. -8
Genrish500 [490]
Ummm explain the question more but b seems to make the most sense
8 0
3 years ago
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