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Sergio [31]
3 years ago
15

Help with this one plzzz?

Mathematics
1 answer:
Ilya [14]3 years ago
3 0
(8x+4)+(18-8x)=<u>8x</u>+4+18-<u>8x</u>=0+22=22
the choice is D
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How long would it take for a ball dropped from the top of a 100-foot building to hit the ground? Round your answer to two decima
Sunny_sXe [5.5K]

Answer:

time = 2.48 seconds

Step-by-step explanation:

Given data:

distance = 100 foot

Initial velocity = 0 <em>because it was held and being released.</em>

acceleration is gravitational force

<em>gravitational force in feet per second = 32.2 ft/s²</em>

<em>formula for distance is s = ut +(1/2)at² where s = distance , u = intial velocity , a = acceleration and t = time</em>

s = ut +(1/2)at²

100 = 0(t) + (1/2)(32.2)t²

100 = 16.2t²

100/16.2  = t²

therefore t = 2.484

t = 2.48 seconds (to 2 decimal places)

7 0
3 years ago
Radio signals travel at a rate of 3 x 10^8 meters per second. How many seconds would it take for a radio signal to travel from a
wel
Time = Distance / Speed   [ Already mentioned ]

Then, substitute the known values, 

t = (9.6 × 10⁶) / (3 × 10⁸)

t = 3.2 × 10⁻² s

In short, Your Answer would be Option B

Hope this helps!
4 0
3 years ago
The formula for the perimeter of a rectangle is P=2(l+w). Solve for w. will give brainliest click sreenshot for answer choices
nikklg [1K]

Answer:

semoga jawapan ini dapat membantu anda

4 0
3 years ago
Write a function with a zero of 1/2. Explain how you know.
AysviL [449]

Answer:

Simplest function is f(x) = 2x - 1

Step-by-step explanation:

When a function has a zero, simply put, that point is where the graph goes through the x-axis.  At this point, the y value is 0.

If a function has a 0 of 1/2, that translates to x = 1/2 and also (1/2, 0).  That means that y = 0 when x = 1/2.

If x = 1/2 and is a zero, then x - 1/2 = 0 and 2x - 1 = 0 (notice that y = 0 here and solving for x would get you right back to x = 1/2).

The simplest function with a zero of 1/2 is

f(x) = 2x - 1

You know it is true that the zero is 1/2 for two reasons.  First one is to set the right side equal to 0 and solve for x.

The second one is to graph the line y = 2x - 1 and see that it goes through the x axis at 1/2 where y = 0.

5 0
3 years ago
PLEASE HELP! IM A MONTH BEHIND IN MATH AND FREAKING OUT T^T PLZZZZ
ANTONII [103]
A) Let x stand for time, y stand for velocity.
We are given the points (2,50), (6, 54). We can make a line using the slope intercept form
y = mx + b.
slope is (54 - 50)/(6-2)  = 4/4 = 1
y = 1x + b
plug in point (2,50) to find b
50 = 1(2) + b
50-2 = b
48 = b
the equation is  y = 1x + 48
Make standard form.
<span>x - y = -48
</span><span>b) make a table and plot points for the first 7 hours
Table Is attached.
Good Luck!
If you like the answer please give me brainliest answer!
</span>

3 0
3 years ago
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