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marshall27 [118]
3 years ago
12

A bag contains red marbles and black marbles. For every 1 black marble,

Mathematics
1 answer:
Solnce55 [7]3 years ago
7 0
There are 101 red marbles.
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Which quadratic function has Vertex (-1,4) and passes through (4,19) <br> HELP
hichkok12 [17]

Answer:

f(x)=\frac{3}{5}(x+1)^2+4

Step-by-step explanation:

The equation of a quadratic function in vertex form is given by:

f(x)=a(x-h)^2+k

Where (h,k) is the vertex.

It was given in the question that the vertex of the parabola is (-1,4).

When we substitute the vertex into the formula we get:

f(x)=a(x+1)^2+4

The parabola also passes through (4,19) hence it must satisfy its equation.

19=a(4+1)^2+4

19-4=a(5)^2

15=25a

We divide both sides by 25 to get:

a=\frac{15}{25}= \frac{3}{5}

Hence the quadratic function is:

f(x)=\frac{3}{5}(x+1)^2+4

6 0
3 years ago
Reposting because nobody will help me..
Llana [10]

Answer:

B

Step-by-step explanation:

18 = 2 * 3 * 3 = 2 *3²

18*3^{(n+2)} = 2*3^{2}*3^{n+2}\\\\

                = 2*3^{2+n+2}\\\\= 2*3^{n+4}\\\\= 2(3)^{n+4}

Hint:

a^{m}*a^{n} = a^{m+n}

5 0
3 years ago
-3 17/20 as a decimal
alekssr [168]

Answer:

-3.85

-3 is a whole number, it comes before the decimal point.

17/20 is a fraction so it goes on the other side.

7 0
3 years ago
Make a table for the following equations<br> y = 2x + 4
nekit [7.7K]

In order to make a table, we sample some x values (whichever we want), and we compute the expression for those value. Each x value will yield a unique y value.

If you need this table to graph the function, you'll only need two points, since this is a line, and having two points you just need to connect them.

Here are some samples, feel free to make more if you need to:

f(x)=2x+4\implies f(0)=2\cdot 0 + 4 = 4

f(x)=2x+4\implies f(1)=2\cdot 1 + 4 = 6

f(x)=2x+4\implies f(2)=2\cdot 2 + 4 = 8

f(x)=2x+4\implies f(3)=2\cdot 3 + 4 = 10

f(x)=2x+4\implies f(4)=2\cdot 4 + 4 = 12

So, we have the following table

\begin{array}{c|c}0&4\\1&6\\2&8\\3&10\\4&12\end{array}

4 0
3 years ago
Identify the domain of the graph.
Viktor [21]

Answer:

Domain is 0 to 50.

Step-by-step explanation:

0 \leq  x \leq  50

7 0
3 years ago
Read 2 more answers
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