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3 years ago

Enter the correct answer in the box.

Mathematics

2 answers:

Rufina [12.5K]3 years ago

7 0

Answer: the formula is r you have it right there

Step-by-step explanation:

Lapatulllka [165]3 years ago

5 0

Answer:

Step-by-step explanation:

For this case we have the following equation:

a = v ^ 2 / r

From here, we must clear the value of speed.

We have then:

v ^ 2 = a * r

v = root (a * r)

Answer:

the formula for the velocity is:

v = root (a * r)

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Step-by-step explanation:

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3 years ago

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A parabola has a vertex at (0, –1) and passes through the point (2, 2). Which of the following is the equation of this parabola

galben [10]

For vertex at (h,k)
the equation is
y=a(x-h)^2+k

for vertex at (0,-1)
equation is
y=a(x-0)^2+(-1) or
y=ax^2-1
find what a is

(2,2)
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y=2
2=a(2^2)-1
2=a(4)-1
add 1
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4 years ago

I NEED HELP ASAP Find the distance between the points (2, 3) and (2, 8).

andreyandreev [35.5K]

Use the distance formula: x=sqrt((x2-x1)^2+(y2-y1)^2)

Plug in ordered pairs for the variables:

x=sqrt((2-2)^2+(8-3)^2)

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x=sqrt(25)

x=5 or -5

Since distance is ALWAYS positive, it's 5 units

Hope this helped!

6 0

4 years ago

Which equation best shows that 55 is a multiple of 11? Choose 1 answer: (Choice A) A 55 = 44 + 1155=44+1155, equals, 44, plus, 1

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Step-by-step explanation:

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3 years ago

An education firm measures the high school dropout rate as the percentage of 16 to 24 year olds who are not enrolled in school a

posledela

Answer:

The value of the test statistic $z = -0.6606$

Step-by-step explanation:

From the question we are told that

The high dropout rate is $\mu = 6.1$ % $= 0.061$

The sample size is $n = 1000$

The number of dropouts $x = 56$

The probability of having a dropout in 1000 people $\= x = \frac{56}{1000} = 0.056$

Now setting up Test Hypothesis

Null $H_o : p = 0.061$

Alternative $H_a : p < 0.061$

The Test statistics is mathematically represented as

$z = \frac{\= x - p}{\sqrt{\frac{p(1 -p)}{n} } }$

substituting values

$z = \frac{0.056 - 0.061}{\sqrt{\frac{0.061(1 -0.061)}{1000} } }$

$z = -0.6606$

6 0

3 years ago