A survey is targeted at 12-year-old children. Whoch question are appropriate for the population? Select two options. 38 points. A. What year did you graduate from high school. B. What color was your first car. C. Where is your favorite vacation spot. D. What is the last book you read. E. Should taxes be increased to fund a new park?

Answer:

21

Step-by-step explanation:

Answer:

X = 50

Step-by-step explanation:

2/5x = 20

x = 20÷2/5

x = 20 × 5/2

x = 10 × 5

x = 50

Answer:

54 Degrees

Step-by-step explanation:

<5 is going to be whatever 180-<3 is.

Answer:

your answer: m<5=54 degree

Step-by-step explanation:

hope it helps u

have a great day !!

Answer:

each taco costs $8 and each soda $4

Step-by-step explanation:

the difference between the two is $16 and half of $16 is $8 so you can tell each taco is $8. That automatically shows that the rest of the cost is $8 which half of is $4

Answer:

$400 and $1,000

Step-by-step explanation:

Let us assume the x be the amount invested in 7% account

And, 600 + x be the amount invested in 9% account

Now the equation is

7x% + 9%(600 + x) = $118

0.07x + 54 + 0.09x = $118

0.16x = $118 -$54

0.16x = $64

x = $400

And, the other one is = $400 + $600 = $1,000

Answer:

So for the head and tails one it is 1/1 chance of getting a head and for the dice on it is 1/21 that's the porbability hopes this helps :)

Step-by-step explanation:

Probability of getting a head on the coin and a 4 on the die​ is 0.083.

Probability defines the likelihood of occurrence of an event. Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.

Probability(Event) = Favorable Outcomes/Total Outcomes

According to the question

A coin is flipped and a die is rolled

Probability of getting a head on the coin and a 4 on the die​:

Total Number of favorable outcomes(coin is flipped) = {H, T}  = 2

Number of favorable outcomes (head) = 1

Total Number of favorable outcomes(die is rolled) = {1, 2, 3, 4, 5, 6}  = 6

Number of favorable outcomes (4 on the die) = 1

P(head) = [tex]\frac{1}{2}[/tex]

P(4) = [tex]\frac{1}{6}[/tex]

P(head and 4) = [tex]\frac{1}{2}[/tex]. [tex]\frac{1}{6}[/tex]

= [tex]\frac{1}{12}[/tex]

= 0.083

Hence, Probability of getting a head on the coin and a 4 on the die​ is 0.083.

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Answer:

The expression is negative

Step-by-step explanation:

11/-3 is negative

-11/-3 is positive

negative + positive or positive + negative =  negative

Answer:

complementary angles sum to 90° 90° - 70° = 20° complementary of 70° is 20°

Answer:

Step-by-step explanation:

If the birdhouse is a cube that is 2 ft on each edge, the surface area is 6×2² = 24 ft². That's a pretty large birdhouse, and it will need about ¾ of a pint of paint.

Answer:

Step-by-step explanation:

h(x)=ax^2

Given h=30 when x=150 we get

a(150)^2=30

a=30/22500=1/750 so

h(x)=x^2/750

The equation  [tex]\rm h(x)= \frac{1}{750} x^2[/tex]   represents the height of the cable at a distance x feet from the center.

It is given that the cable for a certain suspension bridge is modeled by a parabola with vertex (0,0).

It is required to derive the equation that represents the height of cable at a distance x feet from the center.

It is defined as the graph of a quadratic function that has something bowl-shaped.

We have the bridge is modeled by a parabola with vertex (0,0)

We know the general equation of parabola:

[tex]\rm y= a(x-h)^2+k[/tex]  with vertex (h,k)

Here the value of h = 0 and k = 0

[tex]\rm h(x)= ax^2[/tex]    ( ∵ y = h(x) represented the function in terms of height)

We have h = 30 at x = 150 (From the question)

Putting the value of h and x in the parabola equation, we get:

[tex]\rm 30 = a(150)^2[/tex]

[tex]\rm a = \frac{1}{750}[/tex]

Putting the value of 'a' in the parabola equation, we get:

[tex]\rm h(x)= \frac{1}{750} x^2[/tex]

Thus, the equation  [tex]\rm h(x)= \frac{1}{750} x^2[/tex]   represents the height of the cable at a distance x feet from the center.

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The area of the floor in the scale drawing will be 56 inches².

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

Given that;

The rectangular floor of a classroom is 28 feet in length and 32 feet in width.

And,  A scale drawing of the floor has a length of 7 inches.

Now,

Since,  A scale drawing of the floor has a length of 7 inches.

Hence, By definition of proportion we get;

Let the width of scale drawing = x

So, We get;

⇒ 28 / 32 = 7 / x

⇒ x = 7 × 32 / 28

⇒ x = 8

Thus, The width of a scale drawing = 8 inches

So, The area of the floor in the scale drawing = Length × Width

                                                                      = 7 × 8

                                                                      = 56 inches²

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Answer:

The answer is cost = 50 + 30x

Step-by-step explanation:

Answer:

The correct answer is cost = 50 + 30x

Step-by-step explanation:

Answer:

r = 1 ft

Step-by-step explanation:

Using the formula

d=2r

Solving for

r = d/2 = 2/2 = 1 ft

Step-by-step explanation:

by Pythagoras theorem:

perpendicular² + base²= hypotenuse²

(1/√2)²+ (1/√3)² = H²

1/2+1/3= H²

5/6 = H²

√(5/6 )= H

√5/√6 = H

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Answer:

mark me the brainlest then go in my porfile there is the answer

Step-by-step explanation:

Answer:

radius is 1/2 the diameter. so 8/2= 4 kilometers

Answer:

885.2m²

Step-by-step explanation:

a is the side length of the square at the base

h is the height of the pyramid

Given

a = 18m

Get the height using the pythagoras theorem

h² =18²-9²

h² = 324 - 81

h² = 243

h = √243

h = 15.5884m

Area of the triangle = 1/2 * 18 * 15.5884

Area of the triangle = 9 * 15.5884

Area of the triangle = 140.2956m²

Area of the 4 triangles = 4(140.2956)

Area of the 4 triangles = 561.1824m²

Base area = 18 * 18

Base area = 324m²

Total surface area = Base area + Area of the 4 triangles

Total surface area = 324 + 561.1824

Total surface area = 885.1824

Total surface area = 885.2m² (to the nearest tenth)

Answer:

hope it helps you

have a great day!!

Answer:

The last one is the answer

Step-by-step explanation:

39+91=130

13(10)=130

130=130

Answer:

13(3 + 7)

Step-by-step explanation:

First do 3 + 7 and that is 10.

Then do 10 x 13 and that is 130.

Finally compare 91 + 39 = 130 to 13(3 + 7)

Answer:

The 98% confidence interval estimate of the mean is between 32.45 hg and 34.75 hg.

32.3 is not a part of the confidence interval, which means that yes, these results are very different from the confidence interval 32.3 hg​

Step-by-step explanation:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.98}{2} = 0.01[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.01 = 0.99[/tex], so Z = 2.327.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

[tex]M = 2.327\frac{6.2}{\sqrt{157}} = 1.15[/tex]

The lower end of the interval is the sample mean subtracted by M. So it is 33.6 - 1.15 = 32.45 hg

The upper end of the interval is the sample mean added to M. So it is 33.6 + 1.15 = 34.75 hg

The 98% confidence interval estimate of the mean is between 32.45 hg and 34.75 hg.

Are these results very different from the confidence interval 32.3 hg​

32.3 is not a part of the confidence interval, which means that yes, these results are very different from the confidence interval 32.3 hg​

Answer:

Supplementary Angles

Step-by-step explanation:

Two (or more) angles whose

sum is 180°