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IgorC [24]
3 years ago
15

Please help links = reported i need help

Mathematics
2 answers:
34kurt3 years ago
6 0

Answer:

not helping you i will take the points tho.

Step-by-step explanation:

thanks for the points im taking them back now c: this is what you get for messing with me

Marrrta [24]3 years ago
6 0

Answer:

idiot

Step-by-step explanation:

You might be interested in
Does anyone know how to do this? MATH ANSWERS ONLY ​
Gnoma [55]

Answer:

<em>34.2 ; 105.8 ; 12.0</em>

Step-by-step explanation:

\frac{a}{sinA} = \frac{b}{sinB} = \frac{c}{sinC}

c² = a² + b² - 2abcosC

~~~~~~~~~~~~

sinB = \frac{bsinA}{a}

sinB = 7sin40° ÷ 8 ≈  0.562439

<em>m∠B</em> ≈ <em>34.2°</em>

<em>m∠C</em> = 180° - ( 40° + 34.2° ) = <em>105.8°</em>

c² = 8² + 7² - 2(8)(7)cos106° ≈ 143.87

<em>c </em>≈ <em>12.0 </em>units

3 0
2 years ago
The height of one solid limestone square pyramid is 25 m. A similar solid limestone square pyramid has a height of 30 m. The vol
kotykmax [81]
<span>Answers:
(A) </span>Scale factor = 5/6 or 0.833
(B) Area ratio is 25:36
(C) Volume ratio is 125:216
(D) Volume of smaller pyramid = 9375m^3


<span>Explanation:
A) The formula for the scale factor for pyramids is:
Scale factor = Height of small pyramid/Height of large pyramid
</span>Scale factor <span>= 25/30 
</span>Scale factor <span>= 5/6 or 0.833

B) </span><span> The ratio of the area of the base of the smaller pyramid to the larger pyramid = (25)^2/(30)^2 </span><span>
Hence area ratio is 25:36

C) </span><span>Ratio of the volume of the smaller pyramid to the larger = (25)^3/(30)^3
</span><span>
Therefore volume ratio is 125:216

D) Volume of smaller pyramid is 125/216 times the volume of the larger pyramid, from above,

Therefore volume of smaller pyramid=</span>125/216 * 16200 = 9375m^3
5 0
3 years ago
Kendra dives off of a diving board into the water and then comes back up to the surface. Her dive can be modeled by the equation
il63 [147K]

Answer:

<em />

  • <em>1) How high is the diving board?:</em> <u>    6 feet above the water surface</u>

  • <em>2) How deep does the diver dive into the water?:</em>   <u>   6.5feet into the water</u>

<em />

  • <em>3) At what horizontal distance from the board does the diver enter the water?</em> <u>        1 feet from the board</u>

  • <em>4) At what horizontal distance from the board does the diver come to the surface of the water after the dive?</em> <u>      6 feet from the board</u>

Explanation:

The dive is modeled by the equation<em> h(x) = x² - 7x + 6.</em>

Two important features that you must notice quickly are:

  • That is a quadratic function, which is a parabola.

  • Since the leading term, x², is positive, the parabola open upwards, and the vertex is a minimum.

As for the questions:

<em>1) How high is the diving board?</em>

The diving board is the place from which Kendra dives off. At this point, the horizontal distance, x, from the diving board is 0.

Then, the height will be given by h(x) with x = 0. Substitute into the equation and compute:

  • h(0) = 0² - 7(0) + 6
  • h(0) = 0 - 0 + 6
  • h(0) = 6

Therefore, the diving board is 6 feet above the water surface.

<em><u>2) How deep does the diver dive into the water?</u></em>

This is the minimum heigth given by the function h(x).

As explained above, this is the vertex of the parabola.

You can find the x-coordinate of the vertex with the equation:

  • x-coordinate of the vertex = -b/(2a)

Where b and a are the coefficients of the linear term and the quadratic terms in the equation for h(x), respetively:

  • a = 1
  • b = -7

  • x-coordinate = - (-7) / (2 × 1) = 7/2 = 3.5

Now you can find h(x) for x = 3.5

  • h(3.5) = (3.5)² - 7(3.5) + 6 = 12.25 - 24.5 + 6 = - 6.25

That is 6.25 feet below the water surface.

<u><em>3) At what horizontal distance from the board does the diver enter the water?</em></u>

That is the x-intercept of the function. This is, the value of x when h(x) = 0.

Thus, solve the equation 0 = x² - 7x + 6.

You can factor the equation:

  • Find two numbers that add up -7  and their product is +6. Those are - 6 and -1:

  • 0 = (x - 1) (x - 6)

Using the zero product property:

  • (x - 1) = 0 or (x - 6) = 0
  • x = 1 or x = 6

Thus, you have two solutions, which are the two x-intercepts of the funtion.

  • x = 1 represents the horizontal distance from the board where the diver enters the water.

The other solution is the answer to the next question.

<u><em>4) At what horizontal distance from the board does the diver come to the surface of the water after the dive?</em></u>

<u><em></em></u>

As explained above, the equation has two x-intercepts. They both are the points where the parabola crosses the x-axis, which is when the height, h(x) is 0. That height is the surface of the water level.

The first x-intercept is the point (horizontal distant from the board) where the diver enters the water, such as asserted above.

The other x-intercept is where the diver comes to the surface of water after the dive and after being submerged in the water: the diver enters the water, dives 6.5feet into the water, and returns to the surface.

Thus, this is the solution x = 6 for h(x) = 0.

Hence, Kendra comes to the surface of water  at 6 feet from the board.

7 0
2 years ago
Read 2 more answers
Plz help ill mark brainlist
spin [16.1K]

Answer:

ITS (A)

Step-by-step explanation:

PLEASE MARK ME AS BRAINLIST

8 0
2 years ago
25% equivalent to 1/4%
Effectus [21]
Those are equivalent take 100 times 1/4 it’s the same as dividing 4 :)
3 0
3 years ago
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