Ask question

Ask question

All categories

2 years ago

6

Brooke plays on her schools softball team. Last season she was at bat 500 times and made a safe hit 28% of the time. How is 28%

expressed as a fraction
PLEASE HELP please?

1 answer:

Gre4nikov [31]2 years ago

5 0

Answer:

28/100

Step-by-step explanation:

You might be interested in

Y=-x^2+6x-4<br> Find the Axis of Symmetry and the Vertex, Also solve the whole equation.

Inessa [10]

Answer:

1. <em>Axis of symmetry</em>: x = 3

2. <em>Vertex:</em> (3,5)

3. <em>Solution of the equation</em>:

<u />

x-intercepts:

$(3-\sqrt{5},0) \\\\(3+\sqrt{5},0)$

y-intercept: (0, -4)

Explanation:

<u>1. Equation:</u>

$y=-x^2+6x-4$

<u>2. </u><em><u>Axis of symmetry:</u></em>

That is the equation of a parabola, whose standard form is:

$y=ax^2+bx+c$

Where:

$a=-1;b=6;c=-4$

The axis of symmetry is the vertical line with equation:

$x=-b/2a$

Substitute $a=-1,\text{ and }b=6$

$x=-6/[(2)(-1)]=-6/(-2)=3$

Thus, the axis of symmetry is:

$x=3$

<em><u>3. Vertex</u></em>

<em><u /></em>

The x-coordinate of the vertex is equal to the axys of symmetry, i.e x = 3.

To find the y-xoordinate, substitute this value of x into the equation for y:

$y=-x^2+6x-4\\\\y=-(3)^2+6(3)-4=-9+18-4=5$

Therefore, the vertex is (3, 5)

<u>4. Find the x-intercepts</u>

The x-intercepts are the roots of the equation, which are the points wher y = 0.

$y=-x^2+6x-4=0$

Use the quadratic equation:

$x=\frac{-b\pm \sqrt{b^2-4ac} }{2a} \\\\x=\frac{-6\pm\sqrt{(-6)^2-4(-1)(-4)} }{2(-1)}\\\\x_1=3-\sqrt{5} \\\\x_2=3+\sqrt{5}$

<u>5. Find the y-intercept</u>

<u />

The y-intercet is the value of y when x=0:

$y=-x^2+6x-4\\\\y=-(0)^2+6(0)-4=-4$

7 0

3 years ago

The number z and 0.8 are additive inverses. Drag and drop 0.8 and z to their correct positions on the number line. Drag and drop

UkoKoshka [18]

we know that

If two numbers have a sum of zero, then we say they are additive inverses.

so

z+0.8=0 -------> the sum is equal to zero

z=-0.8------> the additive inverse of z is equal to -0.8

using a graph tool

see the attached figure

<u>the answer Part a) and part b) in the attached figure</u>

7 0

3 years ago

Read 2 more answers

Can someone please help with this math question:)

Bingel [31]

<u>Solution</u><u>:</u>

The rationalisation factor for $\frac{1}{ a - \sqrt{b} }$ is $a + \sqrt{b}$

So, let us apply it here.

$\frac{1}{5 - \sqrt{2} }$

The rationalising factor for 5 - √2 is 5 + √2.

Therefore, multiplying and dividing by 5 + √2, we have

$= \frac{1}{5 - \sqrt{2} } \times \frac{5 + \sqrt{2} }{5 + \sqrt{2} } \\ = \frac{5 + \sqrt{2} }{(5 - \sqrt{2})(5 + \sqrt{2} ) } \\ = \frac{5 + \sqrt{2} }{ {(5)}^{2} - ( \sqrt{2})^{2} } \\ = \frac{5 + \sqrt{2} }{25 - 2} \\ = \frac{5 + \sqrt{2} }{23}$

<u>Answer:</u>

<u> $\frac{5 + \sqrt{2} }{23}$ </u>

Hope you could understand.

If you have any query, feel free to ask.

5 0

2 years ago

Read 2 more answers

The Dot plot shows the salaries for the employees that two small companies before a new company head is hired on each company se

Dmitry_Shevchenko [17]

Answer:

D

Step-by-step explanation:

8 0

3 years ago

The vampires played 20 games. The team won 4 more games than it lost. How many games did the vampires win?

PolarNik [594]

The vampires won 12 games :)

4 0

3 years ago