If an airplane traveled 414 miles how fast did it travel in 3/4 of an hour?

Answer:

7-3 i think

Step-by-step explanation:

Answer:

B.

Step-by-step explanation:

In mathematics, a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a symbol, called the imaginary unit, that satisfies the equation i² = −1. Because no real number satisfies this equation, i was called an imaginary number by René Descartes.

Answer:

144

Step-by-step explanation:

Answer: 4 & 49/64

whole part = 4

fractional part = 49/64

===============================================

Work Shown:

U = upper limit

U = (center) + (margin of error)

U = (4 & 3/4) + (1/64)

U = (4 + 3/4) + (1/64)

U = 4 + (3/4 + 1/64)

U = 4 + (48/64 + 1/64)

U = 4 + 49/64

U = 4 & 49/64

The Lower limit is 299/8 and Upper limit is 301/8.

A limit is a value toward which an expression converges as one or more variables approach certain values.

Given:

Tolerances are usually in the form T ±T.  T is tolerance.  

In this case, your dimensions will be

 4 3/4 ± 1/64

If we add the tolerance to the desired length, we get the upper limit.

Upper limit = 9 3/8 + 1/32

                   = 75/ 8 +  1/32

                   = 301/8

and, If we subtract the tolerance from the desired length, we get the lower limit.

Lower limit = 9 3/8 - 1/32

                   = 75/ 8 - 1/32

                   = 299/8

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Answer:

d or c but 88% sure d

Step-by-step explanation:

give me brainlest please

Answer:

c

Step-by-step explanation:

you will need to round it down to 1,sorry if wrong this is my theory

Answer:

-60 ? At least that's if you meant like

[tex]5 \times ( - 12) = - 60[/tex]

Answer:

Cannot simplify As a decimal 0.41.6 Explanation: 512 does not cancel down

Step-by-step explanation:

The Matching is :

1. [tex]i^{81[/tex] = i

2. [tex]i^{52[/tex] = 1

3.  [tex]i^{99[/tex] = -i

4.  [tex]i^{66[/tex] = -1.

Complex numbers are the numbers that are expressed in the form of a+ib where, a,b are real numbers and 'i' is an imaginary number called “iota”. The value of i = (√-1).

Given:

1. [tex]i^{81[/tex]

= i. [tex]i^{80[/tex]

= i . (i²[tex])^{40[/tex]

= i (-1[tex])^{40[/tex]

Now, the even power of (-1) gives 1.

[tex]i^{81[/tex] = i

2. [tex]i^{52[/tex]

= 1 . (i²[tex])^{26[/tex]

Now, the even power of (-1) gives 1.

=1

3.  [tex]i^{99[/tex]

= i. [tex]i^{98[/tex]

= i . (i²[tex])^{49[/tex]

= i (-1[tex])^{49[/tex]

Now, the odd power of (-1) gives -1.

[tex]i^{81[/tex] = -i

4.  [tex]i^{66[/tex]

= 1 . (i²[tex])^{33[/tex]

Now, the odd power of (-1) gives -1.

= (-1)

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Answer:

give an example

Step-by-step explanation:

Using the mean concept, it is found that we will need 15 more points to bring up his average up to 90%.

The mean of a data-set is the sum of all observations divided by the number of observations.

In this problem:

Hence, the mean is:

[tex]M = \frac{0.84(5) + n}{5 + n} = \frac{4.2 + n}{5 + n}[/tex]

We want the mean to be of 0.9, thus:

[tex]M = 0.9[/tex]

[tex]\frac{4.2 + n}{5 + n} = 0.9[/tex]

[tex]4.2 + n = 0.9n + 4.5[/tex]

[tex]0.1n = 0.3[/tex]

[tex]n = \frac{0.3}{0.1}[/tex]

[tex]n = 3[/tex]

3 more testes are need, each worth 5 points, hence, 15 more points are needed to bring up his average up to 90%.

A similar problem is given at https://brainly.com/question/25323941

(i) If R(m) = m² (c/2 - m/3) = cm²/2 - m³/3, then differentiating with respect to m gives the sensitivity function,

R'(m) = cm - m²

In Mathematica, define a function R by

R[m_] := m^2*(c/2 - m/3)

Then you can get the derivative with either R'[m] or D[R[m], m].

(ii) Find the critical points of R, i.e. the points for which R' is zero or undefined. Since R' is a polynomial, it is defined everywhere, so we only care about the first case. We have

R'(m) = cm - m^2 = m (c - m) = 0

with solutions m = 0 or m = c.

Compute the second derivative of R :

R''(m) = c - 2m

Check the sign of R'' at each critical point:

At the second critical point, we have a maximum value of

R(c) = c³/2 - c³/3 = c³/6

In M, we get the same result via

Maximize[R[m], m]

which should return a list like

{c^3/6, {m -> c}}

where the first element is the maximum, and the second element is a list with a rule pointing the target variable m to the critical point.

(iii) We've done this in part (ii) already while carrying out the second derivative test above,

R''(m) = c - 2m

In M, this is accomplished by R''[m] or D[R[m], {m, 2}].

(iv) We carry out the derivative test like in part (ii), but this time for R'. We have critical points when

R''(m) = c - 2m = 0

which occurs for m = c/2. The second derivative of the sensitivity function is the third derivative of R,

R'''(m) = -2

which is negative for all values of m, which means R' is in fact maximized at m = c/2. At this point of maximum sensitivity, we have

R(c/2) = c(c/2)²/2 - (c/2)³/3 = c³/8 - c³/24 = c³/12

In M, run

Maximize[R'[m], m]

Answer:1.33 kg

Step-by-step explanation:

2 2/3= 8/3

8÷3= 2.66 kg

2.66-4= 1.33 kg

Step-by-step explanation: i d0nt kn00w

Answer:

A. corresponding angles

Step-by-step explanation:

I hope that I could help!!!!!

Step-by-step explanation:

Here we will simplify the ratio 8:25 for you and show you how we did it.

To simplify the ratio 8:25, we find the greatest common divisor of 8 and 25, and then we divide 8 and 25 by the greatest common divisor.

The greatest common divisor that you can use to simplify 8:25 is 1. Which means the answer to ratio 8:25 simplified is: 8:25

Here is the math to illustrate better:

8/1 = 8 and 25/1 = 25

Thus, 8: 25 ratio simplified is 8:25

Link to understand better - https://thepercentagecalculator.net/SimplifyRatios/Simplify-Ratio-8-25.html

Answer:

The other acute angle = 33 1/3°

Step-by-step explanation:

Hard to read the angle measure.  

one acute angle = 56 2/3°      x =  the second acute angle

Find the other acute angles.

The two acute angles sum in a right triangle = 90°  

56 2/3° + x° = 90°

x =  90 - 56 2/3

x = 89 3/3° - 56 2/3°

x = 33 1/3°

Answer:

y = m - 6

Step-by-step explanation:

You can plug in the values and each time the equation comes out true

Answer:

Step-by-step explanation:

You can plug in the values and each time the equation comes out true

4 = 10 - 6

5 = 11 - 6

6 = 12 - 6

Answer:

2n-4

n + 8 + n - 12

( n + n ) + ( 8 - 12 )

( 2n ) + ( -4 )

2n - 4

Step-by-step explanation:

1,000,000x75-34/4 or (1,000,000x75-34)/4 ?????

Answer:

i dont know if this helps but triangle area= 1/2 times b divided by 2

Step-by-step explanation:

[tex]\hspace{34em}|\\ (\stackrel{x_1}{1}~,~\stackrel{y_1}{k})\qquad (\stackrel{x_2}{4}~,~\stackrel{y_2}{1}) ~\hspace{10em} \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{1}-\stackrel{y1}{k}}}{\underset{run} {\underset{x_2}{4}-\underset{x_1}{1}}}~~ ~~\stackrel{\stackrel{slope}{\downarrow }}{-2} \\\\\\ \cfrac{1-k}{3}= -2\implies 1-k=-6\implies -k=-7\implies k = \cfrac{-7}{-1}\implies \boxed{k = 7}[/tex]

The elliptical arc of the bridge is described by the length of the given semi-major and semi minor axis.

Reasons:

The given parameters of the ellipse are;

Shape of the bridge support = Top half of the ellipse

Height of the bridge support at the center = 18 feet

Distance from the bridge support from the center on either side = 25 feet

The general equation of an ellipse is presented as follows;

[tex]\displaystyle \frac{x^2}{a^2} + \frac{y^2}{b^2} = 1[/tex]

Where;

a = The semi major axis = The distance from the center to the left or right support  = 25 feet

b = The semi minor axis = The height of the ellipse at the center = 18 feet

Which gives;

[tex]\displaystyle \mathrm{ \underline{The \ equation \ of \ the \ ellipse \ is; \ \frac{x^2}{25^2} + \frac{y^2}{18^2} = 1}}[/tex]

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Step-by-step explanation:

f(x) = bx² + x - 7

g(x) = x — 2

Remainder is 3.

Let us find the zero of g(x).

→ g(x) = 0

→ g(x) = x - 2

→ 0 = x - 2

→ x = 2

Now, as when f(x) is divided by g(x), then remainder is 3. So,

→ f(2) = 2

→ b(2)² + 2 - 7 = 2

→ 4b - 5 = 2

→ 4b = 7

→ b = 7/4

Answer:

-2 1/2

Step-by-step explanation:

Using rise/run

-1 - 4 / 3 - 1

-5 / 2

-2 1/2 or -2.5

Answer:

-2.5 or -5/2

Step-by-step explanation:

Slope = rise/run

rise = -1 - 4 = -5

run = 3 - 1 =2

so rise/run  = -5/2 = -2.5

Using proportion concepts, it is found that:

1. The standard error is of 0.05.

2. Since both [tex]np \geq 10[/tex] and [tex]n(1 - p) \geq 10[/tex], a normal model can be used.

3. The 95% confidence interval for the percentage of all U.S. households in 2021 that have only wireless telephone service is (46.27%, 65.73%).

Item 1:

The standard error for a proportion p in a sample of size n is given by:

[tex]s = \sqrt{\frac{p(1 - p)}{n}}[/tex]

For 2017, we have that:

Then:

[tex]s = \sqrt{\frac{p(1 - p)}{n}}[/tex]

[tex]s = \sqrt{\frac{0.52(0.48)}{100}}[/tex]

[tex]s = 0.05[/tex]

The standard error is of 0.05.

Item 2:

The normal model can be used if: [tex]np \geq 10[/tex] and [tex]n(1 - p) \geq 10[/tex]

[tex]np = 100(0.52) = 52 \geq 10[/tex]

[tex]n(1 - p) = 100(0.48) = 48 \geq 10[/tex]

Since both [tex]np \geq 10[/tex] and [tex]n(1 - p) \geq 10[/tex], a normal model can be used.

Item 3:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which z is the z-score that has a p-value of [tex]\frac{1+\alpha}{2}[/tex].

Estimate of 2021, which was of 56%, hence [tex]\pi = 0.56[/tex].

95% confidence level, hence[tex]\alpha = 0.95[/tex], z is the value of Z that has a p-value of [tex]\frac{1+0.95}{2} = 0.975[/tex], so [tex]z = 1.96[/tex].  

The lower limit of this interval is:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.56 - 1.96\sqrt{\frac{0.56(0.44)}{100}} = 0.4627[/tex]

The upper limit of this interval is:

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.56 + 1.96\sqrt{\frac{0.56(0.44)}{100}} = 0.6573[/tex]

As a percentage:

0.4627 x 100% = 46.27%

0.6573 x 100% = 65.73%

The 95% confidence interval for the percentage of all U.S. households in 2021 that have only wireless telephone service is (46.27%, 65.73%).

A similar problem is given at https://brainly.com/question/16807970

Answer:

I need the question

Step-by-step explanation:

Can i have brainliest anyways? I need one more :)

Answer:

whats the question

Step-by-step explanation: or sir