There are 200 adults and 300 children at a zoo. The zoo
makes a total of $7000 from the entrance fees, and the
cost for an adult and child to attend is $30. How much
does an adult ticket (x) and child's ticket (y) cost?

Step-by-step explanation:

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

Answer:

1 minute every mile

Step-by-step explanation:

just divide

Answer:

c

Step-by-step explanation:

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

Answer:

7-3 i think

Step-by-step explanation:

Answer: approximate width= 5.2 yd

Step-by-step explanation:

Answer:

d or c but 88% sure d

Step-by-step explanation:

give me brainlest please

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

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)

Learn more about Complex number here:

https://brainly.com/question/20566728

#SPJ2

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

Using the information given, it is found that:

a) 0.39

b) z = 1.96

c) s = 0.0218

d) M = 0.0428

e)

f) The 95% confidence interval is (0.3472, 0.4328), which means that we are 95% sure that the true proportion of boats who are in violation of one or more  safety regulations is (0.3472, 0.4328).

Item a:

The point estimate is the sample proportion, hence:

[tex]\pi = \frac{195}{500} = 0.39[/tex]

Item b:

95% confidence level, hence [tex]\alpha = 0.95[/tex], the critical value 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].

Item c:

The standard error is:

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

For this problem, [tex]\pi = 0.39, n = 500[/tex], hence:

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

[tex]s = \sqrt{\frac{0.39(0.61)}{500}}[/tex]

[tex]s = 0.0218[/tex]

Item d:

The margin of error is:

[tex]M = zs[/tex]

In this problem, [tex]z = 1.96, s = 0.0218[/tex], hence:

[tex]M = zs = 1.96(0.0218) = 0.0428[/tex]

Item e:

The lower bound is:

[tex]\pi - M = 0.39 - 0.0428 = 0.3472[/tex]

The upper bound is:

[tex]\pi + M = 0.39 + 0.0428 = 0.4328[/tex]

The lower bound is 0.3472.

The upper bound is 0.4328.

Item f:

The 95% confidence interval is (0.3472, 0.4328), which means that we are 95% sure that the true proportion of boats who are in violation of one or more  safety regulations is (0.3472, 0.4328).

A similar problem is given at https://brainly.com/question/15136737

Answer:

yes

Step-by-step explanation:

Answer:

Graph A

Step-by-step explanation:

Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Direction: Opens Up

Vertex:  ( 0 ,  2 )

Focus:  

( 0 ,  41 /20 )

Axis of Symmetry:  x = 0

Directrix:  y = 39 /20

x                   y

− 2                22

− 1                 7

0                  2

1                    7

2                  22

Answer:

The answer is A

Step-by-step explanation:

When you reflect something over the x-axis all of the negative y coordinates become positive.

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: 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

Learn more about Limit here:

https://brainly.com/question/8533149

#SPJ2

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:

144

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

Answer:

give an example

Step-by-step explanation:

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:

Answer:

-8b - 32

Step-by-step explanation:

8(-b-4)

Distribute

8 *(-b) + 8 * (-4)

-8b - 32

Answer:

-8b-32

Step-by-step explanation:

8(-b-4) next it would be -8b-32

Answer:

Step-by-step explanation:

The slope is most easily found using two grid intersections. We know that the line crosses the grid intersection (0, -1) at the y-axis. (That is the y-intercept.) And it crosses another one at (1, 1), just above the x-axis in the first quadrant.

The slope of the line between these points can be found using the slope formula:

  m = (y2 -y1)/(x2 -x1)

  m = (1 -(-1))/(1 -0) = 2/1 = 2

The slope can also be found by counting the grid squares of "rise" (2) for each grid square of "run" (1) between those two points or any other convenient points on the line.

  m = rise/run = 2/1 = 2

The slope of the line is 2.

__

The y-intercept is the point where the line crosses the y-axis. That point is on an unmarked grid line between y = 0 and y = -2. That is, it is halfway between the values 0 and -2, so is y = -1.

The y-intercept is (0, -1).

Answer:

21 pounds

tell me if it helped :P

Step-by-step explanation:

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