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sweet-ann [11.9K]
3 years ago
6

Multiply: 6.5 x 4.3

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
5 0

The answer is 27.95                                            

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A ball is thrown upward from a height of 15 ft with an initial velocity of 5 ft/s. Use the equation h=-16t^2+5t+15 to answer the
Fiesta28 [93]

Answer:

1) 1.1 seconds

2) 13.5 feet

<h3>Part A</h3>

\rightarrow \sf  -16t^2 + 5t + 15 = 0

<u>Apply quadratic formula</u>:

\rightarrow \sf t=   \dfrac{-5\pm \sqrt{5^2-4\left(-16\right)\cdot \:15}}{2\left(-16\right)}

<u>Simplify following</u>

\rightarrow \sf t=-\dfrac{-5+\sqrt{985}}{32},\:t=\dfrac{5+\sqrt{985}}{32}

In decimal form:

\rightarrow \sf t=-0.825 ,\:t=1.137

Conclusion:

As time is be only positive: t = 1.1 seconds

<h3>Part B</h3>

\rightarrow \sf  h=-16t^2 + 5t + 15

<u>insert t = 0.5</u>

\rightarrow \sf  h=-16(0.5)^2 + 5(0.5) + 15

<u>simplify</u>

\rightarrow \sf  h=13.5

3 0
2 years ago
Which statements about a square are always true?
arlik [135]

Answer:

All statements are true.

Step-by-step explanation:

In a square, we have

all sides equal

all angles equal to 90 degrees

diagonals always bisect each other and at right angles.

Only square is the quadrilateral which satisfies all the above properties.

A parallelogram has diagonals which do not cut at right angles.

A rhombus has all sides equal but not all angles. Neither diagonals are equal in a rhombus.

8 0
3 years ago
What effect does the "a" value have on the function f(x)=log(x)
Leni [432]
I would guess they're referring to some general form first<span>f(x)=alog(x−h)+k</span>Where 'h' represents horizontal shifts, 'k' vertical shifts and 'a' stretches the function. "a" will also reflect the function across the x-axis if the value is negative. But NOT across the y-axis. I hope that's the place they wanted to put the a at least
5 0
3 years ago
List all the prime factors of 42 besides 1
3241004551 [841]
1,2,3,6,7,14, 21, 42.   I highlighted prime factors of 42.

I hope this helped!!!:)
3 0
3 years ago
Yep sorry again this math is hard
kramer

Answer:

<

Step-by-step explanation:

Firstly, you can focus on the scientific notation and calculate which one is bigger. The left side is 10^3 whereas the right side is 10^4. This shows that even if the number before this was bigger, the larger exponent of these two are the bigger number.

10^3 = 1000\\10^4 = 10000

Meaning the correct sign would be the smaller than sign (<) as the right side is bigger than the left.

Hope this helps!

8 0
3 years ago
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