Can someone please help

Answer:

0.533 miles/min

Step-by-step explanation:

Calculate how fast  the balloon is rising at the moment : dy /dt

location from the lift-off point = 4 miles

angle between the observer's line-of-sight and the horizontal ( ∅ )  = \(\frac{\pi }{6}\)

d∅ / dt = 0.1 rad/min

tan ∅ = y / 4

derivate

sec^2 ∅ . d∅ / dt  = 1/4 . dy/dt

= sec^2 \(\frac{\pi }{6}\) . 0.1 = 1/4 . dy/dt

= ( sec^2 0.5238 * 0.1 ) * 4 = dy/dt

dy/dt = 8 / 15  miles/min

The three statements that are true include the following:

A. The radius of the circle is 3 units.

B. The center of the circle lies on the x-axis.

D. The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.

In Mathematics, the standard form of the equation of a circle is represented by this mathematical expression;

(x - h)² + (y - k)² = r²   .......equation 1.

Where:

h and k represents the coordinates at the center of a circle.

r represents the radius of a circle.

Based on the information provided, we have the following equation of a circle:

x² + y² – 2x – 8 = 0      ......equation 2.

In order to determine the true statements, we would rewrite the equation in standard form and then factorize by using completing the square method:

x² – 2x + y² = 8 = 0

x² – 2x + (2/2)² + y² = 8 + (2/2)²

x² – 2x + 1 + y² = 8 + 1

(x – 1)² + (y - 0)² = 9         .......equation 3.

By comparing equation 1 and equation 3, we have the following:

Center (h, k) = (1, 0)

Radius (r) = 3

Additionally, this line and the center of the given circle lies on the x-axis (x-coordinate) because the y-value is equal to zero (0).

(x - 0)² + (y - 0)² = 3²

x² + y² = 9.

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Answer: 162

Step-by-step explanation:

So you will need to find the Markup. The original cost is $120.

I hope this is the answer you are looking for.

Step-by-step explanation:

Since the two triangles are similar

Then the ratio of sides are equal

Then MK:ML =JH:JI

Sub in this and you will get x =64.1

Answer:

3 11/12

Step-by-step explanation:

6 2/3 convert into improper = 20/3 - 11/4

find common denominator which would be 12

new equation: 80/12 - 33/12

and now subtract which would be 47/12 and turn that into mixed fraction and youll get 3 11/12

Answer:

The answer is 2 hope this helped!

Step-by-step explanation:

Answer:

Reject H0

Step-by-step explanation:

Given :

H0: The frequencies are equal. H1: The frequencies are not equal

Category f0 A 10 B 30 C 30 D 10

Total f0 = (10 + 30 + 30 + 10) = 80

Expected frequency is the same for all categories :

Expected frequency = 1/4 * 80 = 20

χ² = Σ(observed - Expected)² / Expected

χ² = (10-20)^2 / 20 + (30-20)^2 /20 + (30-20)^2 / 20 + (10-20)^2 / 20

χ² = (5 + 5 + 5 + 5) = 20

Pvalue = 0.00017

Pvalue < α

PART A

A box of sugar has equal lengths of 6 inches. Calculate the volume of sugar that can fill the box.

The volume of the box can be calculated using the cubic volume formula given to be:

Therefore, the volume of the box of sugar is calculated to be:

PART B

An ice cube is said to contain a volume of 8 cubic inches of water. What will be the length of one side of the cube?

The length of the cube can be calculated using the formula:

Hence, we can solve to be:

Answer:

  (7)  (2, 4)

Step-by-step explanation:

You want to know which of the offered points is closest to the point of intersection of the two graphed lines.

The point of intersection can be read from the graph as approximately (2 1/3, 3 3/4). The nearest grid intersection to that point is (2, 4), which is the last point on the list of choices.

  (2, 4) is closest to the actual solution

__

Additional comment

You can see this, too, by graphing the offered choices. There are none closer than (2, 4).

Daniella: Were you thinking of perpendicular lines?

Ori: It seems like you've got the basic idea, but your definition could be more precise.

Kaori: Yes! Well done. Here, have a cookie. You've earned it.

Answer:

12.5

Step-by-step explanation:

Answer:

yes ur friend is correct

Step-by-step explanation:

because the value of x .

The diagram only shows that angles M and B are supplementary ( add up to 180 degrees) and that angel 4x is adjacent to angel M.However, there is no information about the measure of angle B or angel M, so we cannot determine the value of x

Using the area formula for composite figures, we can find the value of the area of the figure to be 39mm².

The area that any composite shape covers is known as the area of composite shapes. The composite shape is a shape created by joining a small number of polygons to create the desired shape. These shapes or figures can be constructed from a different variety of shapes that includes triangles, squares, quadrilaterals, etc.

To calculate the area of a composite object, divide it into simple shapes such a square, triangle, rectangle, or hexagon.

Here in the question,

We can divide the figure into 2 rectangles.

One rectangle with length, l = 8mm and breadth, b = 3mm.

Area of the rectangle = l × b = 8 × 3 = 24mm².

Now, in the 2nd rectangle:

Length, l = 5mm

Breadth, b = 3mm.

Area of the rectangle = l × b = 5 × 3 = 15mm².

Total area of the figure = 24 + 15 = 39mm².

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Answer:

864

Step-by-step explanation:

80/100 simplified is 4/5

so you do 4/5 of 1080

which is 1080 divided by 5 that is 216

and then 216 x 4 which is 864

Answer:

2. kilograms

Step-by-step explanation:

\( \huge{ \rm{Question:}}\)

7. If a figure measures 7 centimeters high, 3 centimeters wide and 2 centimeters deep, what is the volume of the figure?

\( \huge{ \rm{Answer:}}\)

The volume of the figure is 42.

Step-by-step explanation:

= 2 x 7 x 3

= 14 x 3

= 42

HOPE THIS HELPS^^

0.9 * 100 = 90

5 *  100 = 500

t = 500

Answer:

Step-by-step explanation:

0,9÷90=0,01

t= 5×0,01=0,05

Using the substitution the system of equations y + 4 = x and 10x + 2y + 16 is solved to be

Substitution involves replacing a value with it's equal

The given equation include

y + 4 = x

10x + 2y + 16

substituting x = y + 4 into 10x + 2y + 16

10x + 2y + 16

= 10(y + 4) + 2y + 16

= 10y + 40 + 2y + 16

collecting like terms

= 12y + 16

12y = -16

y = -16/12

y = -4/3

substituting y = -4/3 into x = y + 4

x = -4/3 + 4

x = 8/3

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Answer:

\(120^{\circ}, 120^{\circ}, 60^{\circ}, 60^{\circ}\)

Step-by-step explanation:

The angles of a quadrilateral add to \(360^{\circ}\).

\(2h+2h+h+h=360 \\ \\ 6h=360 \\ \\ h=60 \implies 2h=120\)

Answer:

\(y =\frac{1}{2}x -4\)

Step-by-step explanation:

m = (1/2)  ; (2 , -3)

y -y1 = m(x - x1)

\(y - [-3] = \frac{1}{2}(x - 2)\\\\y + 3 = \frac{1}{2}x - 2 *\frac{1}{2}\\\\y + 3 = \frac{1}{2}x -1\\\\y = \frac{1}{2}x - 1 - 3\\y =\frac{1}{2}x -4\)

Answer:

12.5

Step-by-step explanation:

(7.5+2.5)x2.5/2

Answer:

12.5 units ^2

Step-by-step explanation:

This figure is a trapezoid

The area of a trapezoid is given by

A = 1/2 (b1+b2) *h

where b1 and b2 are the lengths of the bases and h is the height

A = 1/2 ( 2.5+ 7.5) *2.5

   = 1/2 ( 10) * 2.5

   =12.5 units ^2

Answer:

Step-by-step explanation:

f(n + 1) = f(n) + 2.5

f(1) = -10

f(2) = f(1) + 2.5 = -10 + 2.5 = -7.5

f(3) = f(2) + 2.5 = -7.5 + 2.5 = -5

f(4) = f(3) + 2.5 = -5 + 2.5 = -2.5

The Solution:

To raise a total $600 in 10 days with an estimate of selling 15 cans of soda per day.

To find the amount you should charge for each can is:

Therefore, the correct answer is $4 for each can of soda.

Answer:

\(\frac{1}{12}\)

Step-by-step explanation:

1) Construct a probability tree (check the attachment).

1.1) Change the given items/values into fractions. In this case, there are 3 entrees, each with a probability of \(\frac{1}{3}\) because the probability of selecting a hamburger (an example that could be applied to other options too) is 1 out of the 3 options. Likewise is the case with sides and drinks; the probability of selecting fries (or vegetable) out of the two options is \(\frac{1}{2}\), and the probability of selecting milk (or juice) out of the two options is \(\frac{1}{2}\).

Answer:

1.80

Step-by-step explanation:

Zaire has made par or better on 12 holes out of 15 that he has played.

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.

If the ratio of holes with par or better to total holes played is equal to 0.8, it means that Zaire has made par or better on 80% of the holes he has played.

Let's set up an equation to solve for the number of holes with par or better:

N/15 = 0.8

To solve for N, we can cross-multiply:

N = 15 x 0.8

N = 12

Therefore, Zaire has made par or better on 12 holes out of 15 that he has played.

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Answer: X = -4, 0, 2

Step-by-step explanation:

Wherever the line touches the x-axis the f(x) or y = 0

Answer: 7m + 5

Step-by-step explanation:

Distribute the Negative Sign:

=12m+1+−1(5m−4)

=12m+1+−1(5m)+(−1)(−4)

=12m+1+−5m+4

Combine Like Terms:

=12m+1+−5m+4

=(12m+−5m)+(1+4)

=7m+5