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1 year ago

–4.9(–7.3 + 3.6n) = Simplify the expression please :)

1 answer:

5 0

Answer:
35.77-17.64n
Step-by-step explanation:
We can use the distributive property to simplify: (-4.9*-7.3) + (-4.9*3.6n) = 35.77+(-17.64n) = 35.77-17.64n

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The height of a volleyball, h, in feet, is given by h = −16t^2 + 11t + 5.5, where t is the number of seconds after it has been h

faust18 [17]

Answer:

The volleyball travel high enough to clear the top of the net.

Step-by-step explanation:

The height of a volleyball, h, in feet, is given by h = −16t² + 11t + 5.5, where t is the number of seconds after it has been hit by a player.

Now, for h = 7.3 feet, we can write

7.3 = - 16t² + 11t + 5.5

⇒ 16t² - 11y + 1.8 = 0

Using the quadratic formula we get,

$t = \frac{- (- 11) \pm \sqrt{(-11)^{2} - 4(16)(1.8)}}{2(16)}$

⇒ $t = \frac{11 \pm 2.4}{32}$

⇒ t = 0.27 or t = 0.42

Therefore, for the two real positive values of t the volleyball travel high enough to clear the top of the net. (Answer)

5 0

3 years ago

At what point does the graph of y=9x(x is exponent) cross the y-axis?

uysha [10]

Answer:

-The graph crosses the y-axis at the point (0,0)

None of the given options is correct

A graph crosses the y-axis at the point (0,y).This means that the graph will cross the y-axis when x-=0

To find the point where the graph crosses the y-axis,substitute x=0 into the given equation y-9x

substitute x=0 into the equation y-9x to find the corresponding value of y

That is,

y=9(0)

y=0

therefore the graph crosses the y-axis at the point (0,0)

Step-by-step explanation:

hope it hlps

3 0

2 years ago

What is the greatest 3 digit number you can subtract from 426 so that you would need to regroup?

kolbaska11 [484]

Do you want me to explain it?

6 0

3 years ago

Read 2 more answers

Find the slope of the line y=1/8-1 show your work

sleet_krkn [62]

Answer:

-7/8

Step-by-step explanation:

y = 1/8 -1

y = 1/2^3 -1

y = 1 - (2^3)/2^3

y = 1-8/2^3

y = 7/2^3

y = -7/8

hope that helps <3

7 0

3 years ago

A 1313-foot piece of string is cut into two pieces so that the longer piece is 44 feetfeet longer than twice the shorter piece.

Kitty [74]

Answer:

423

Step-by-step explanation:

Start by setting up a formula.

x = the shorter piece

total = 1313

longer piece = (x*2) + 44

x + (x*2) + 44 = 1313

Simplify

3x + 44 = 1313

Now we must solve for x.

Whatever you do on the left side of the equal sign must also be done on the right.

The goal is to get x by itself on the left side.

Do the easiest thing first, which is usually addition or subtraction. In this case, subtract 44 from both sides.

3x + 44 - 44 = 1313 - 44

3x = 1269

Now the only way to cancel out the 3 on the left is to divide by 3. Since 3/3 =1. Remember this must be done on both sides to keep things equal.

3x/3 = 1269/3

x=423

The End

8 0

3 years ago