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1 year ago

7

I really need help with number 7 please help

1 answer:

Crank1 year ago

3 0

Mike have 103 Baseball cards while Allan have 84 and Michelle jog at 4 mile per hour while Jamie ride bike at 12 mile per hour.

<h3>How to calculate speed?</h3>

Speed is determined by the formula: speed = distance × time. To determine the units for speed, you must first know the units for distance and time.

Since the distance in this example is measured in metres and the time in seconds, the units will be metres per second (m/s) (s).

Or, to put it another way, you can figure out how long it will take by multiplying the distance by the speed. If you know two of the inputs, you can calculate the third one.

If a car travels 120 miles in two hours, for instance, we may get the speed as 120 / 2 = 60 miles per hour. Add the speed and the time together to obtain the distance.

Baseball cards Allan have = 84

Baseball cards Mike have = 84 + 19 = 103

Baseball cards Mike have 103

Jamie can ride at 12 mile per hour

Michelle jog at 12 / 3 = 4 mile per hour

To learn more about speed refer to:

brainly.com/question/13943409

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If f(x)=2x-3/5 , which of the following is the inverse of f(x)?

grigory [225]

Answer:

(5x+3)/2

Step-by-step explanation:

f(x)=(2x-3)/5

f(x)=y

y=(2x-3)/5

interchanging role of x and y

x=(2y-3)/5

5x=2y-3

5x+3=2y

y=(5x+3)/2

the inverse if f(x) = (5x+3)/2

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3 years ago

Aiden is 27 inches tall. He is 3/8 as tall as his father. How y’all is his father?

Paul [167]

27 inches ......... 3/8

x inches .............8/8

<h3>x = (27×8/8)/(3/8) = 27×8/3 = 216/3 = 72 inches (father)</h3>

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3 years ago

Graph f(x) =-2x^+16x-30 by factoring to find the solutions, then find the coordinates of the vertex, and the axis of symmetry. I

fredd [130]

Answer:

<em>Observe attached image</em>

<em>Function zeros:</em>

(3, 0), (5, 0)

<em>Vertex:</em>

(4, 2)

<em>Axis of symmetry:</em>

<em> $x =4$ </em>

Step-by-step explanation:

<u>First factorize the function</u>

$f (x) = -2x ^ 2 + 16x-30$

<em>Take -2 as a common factor.</em>

$-2(x ^ 2 -8x +15)$

<em>Now factor the expression $x ^ 2 -8x +15$ </em>

You must find two numbers that when you add them, obtain the result -8 and multiplying those numbers results in 15.

These numbers are -5 and -3

Then we can factor the expression in the following way:

$f (x) = -2(x-5)(x-3)$

<em><u>The quadratic function cuts the x-axis at </u></em><em>x = 3 and at x = 5.</em>

Now we find the coordinates of the vertex.

For a function of the form $ax ^ 2 + bx + c$ the x coordinate of its vertex is:

$x = \frac{-b}{2a}$

In the function $f (x) = -2x ^ 2 + 16x-30$

$a = -2\\b = 16\\c = 30$

<u>Then the vertice is:</u>

$x = \frac{-16}{2(-2)}\\\\x = 4$

The y coordinate of the symmetry axis is

$y = f (4) = -2 (4) ^ 2 +16 (4) -30\\\\y = 2$

The axis of symmetry is a vertical line that cuts the parabola in two equal halves. This axis of symmetry always passes through the vertex.

<u>Then the axis of symmetry is the line</u>

$x = 4$

<u>The solutions and the vertice written as ordered pairs are:</u>

<em>Function zeros:</em>

(3, 0), (5, 0)

<em>Vertex:</em>

(4, 2)

6 0

3 years ago

It’s asking for the area<br> Please help! Thank you!

Eddi Din [679]

Answer: x^2+9x+20

Step-by-step explanation:

To find the area you multiply the sides so it should be (x+4)(x+5) which is x^2+9x+20. Good luck!

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3 years ago

The perimeter of a rectangle is 12cm the area is 5cm square what is the length of the sides

Helen [10]

Answer:

???

Step-by-step explanation:

3 0

2 years ago

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