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Flauer [41]
3 years ago
15

A rock is blasted straight upward at 180 ft/sec from the ground. Use parametric

Mathematics
1 answer:
Nikitich [7]3 years ago
8 0

Step-by-step explanation:

A rock is blasted straight upward at 180 ft/sec from the ground. Use parametric

equations to model the situation and find:

a. The height of the rock at time = 2 seconds.

b. The maximum height the rock reaches before hitting the ground.

A rock is blasted straight upward at 180 ft/sec from the ground. Use parametric

equations to model the situation and find:

a. The height of the rock at time = 2 seconds.

b. The maximum height the rock reaches before hitting the ground.

.

.

.

.

.

A rock is blasted straight upward at 180 ft/sec from the ground. Use parametric

equations to model the situation and find:

a. The height of the rock at time = 2 seconds.

b. The maximum height the rock reaches before hitting the ground.

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Sociologists want to test whether the number of homeless people in a particular urban area is increasing. In 2010, the average n
kvv77 [185]

Answer:

single sample z test

Step-by-step explanation: The correct statistics test is the single sample A test.

A one-sample z-test is used to test whether a population parameter is remarkably different from some hypothesized value. Each makes a statement about how the true population mean μ is related to some hypothesized value M. It is used to test whether the mean of a population is greater than, less than, or not equal to a specific value.

5 0
3 years ago
(HELP I BEG YOU I NEED SLEEP ITS EASY MULTIPLE CHOICE)
ivann1987 [24]

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Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The Better Nutter Butter Co packed 400 lb. of peanut butter into jars holding 2.5 lbs. each. How many jars were used?
Rus_ich [418]

Answer:

160 jars

Step-by-step explanation:

To find how many jars were used, we just need to divide the amount of stuff by the amount of stuff a jar can hold.

400 (the amount of peanut number in pounds) / 2.5 (the amount of peanut butter each jar can hold) = 160.

So, 160 jars were used to package the 400 pounds of peanut butter.

8 0
3 years ago
a wire of length 200 cm is cut into two parts and each part is bent to form a square.If the area of the larger square is 9 times
diamong [38]

<em>Answer:</em>

<em>The perimeter of the larger square is 150cm.</em>

<em>Step-by-step explanation:</em>

<em>First of all, let one part of it be "x"</em>

<em>and the other part of it "200-x"</em>

<em>Now to solve this :</em>

<em>The area of the square = L^2</em>

<em>The area of one part of the square = x^2</em>

<em>The area of the other part of the square = (200-x)^2</em>

<em>9x^2= (200-x)^2\\9x^2=40000-400x+x^2</em>

<em></em>

<em>Now, add, -4x^2 to both the sides :</em>

<em>9x^2-9x^2=40000-400x+x^2-9x^2\\-1(8x^2+400x-40000)=0</em>

<em />

<em>Now, take out the "8" which is common :</em>

<em>-8(x^2+50x-5000)=0</em>

<em></em>

<em>Now, divide it by -8 :</em>

<em>x^2+100x-50x-5000=0\\x(x+100)-50(x+100)=0\\(x+100)(x-50)=0\\</em>

<em>x=-100 or 50</em>

<em />

<em>So, now we know that :</em>

<em>One of the part is = 50cm</em>

<em>And the other part is = 150cm</em>

<em />

<em>Thus the perimeter of the larger square is = 150cm</em>

3 0
3 years ago
Solve the equation -4x + 7 y equals 20. Y=3x+15
satela [25.4K]

Substitue what y equals for y and solve.

-4x+7(3x+15)=20 \\-4x+27x+105=20 \\23x=-85 \\x=-\boxed{\frac{85}{23}}

Hope this helps.

3 0
3 years ago
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