Pls help thanks!!!!!!!!!!!

Answer:

Step-by-step explanation:

(a)  

16

36

​

=

4

9

​

36:16=9:4

(b)  

144

324

​

=

4

9

​

324:144=9:4

(c)  

1125

125

​

=

1125

125

​

=

45

5

​

=

9

1

​

∴125:1125=1:9

The rate at which the temperature of the compound rose was 5¹/₄ degrees per hour.

To find the rate at which the temperature of the compound rose, we need to divide the change in temperature by the time interval during which the change occurred.

The temperature rose 3¹/₂ degrees every 2/3 of an hour. To write this as a fraction, we can first convert 3¹/₂ to an improper fraction:

3¹/₂= 7/2

Now, we can write the rate of change as a fraction:

Rate of change = (7/2) / (2/3)

To divide by a fraction, we can multiply by its reciprocal:

Rate of change = (7/2) x (3/2)

Simplifying, we get:

Rate of change = 21/4

Therefore, the rate at which the temperature of the compound rose was 5¹/₄ degrees per hour.

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The solution to the inequality is:

0 < a  or a ≤ -5

An inequality is a relationship that makes a non-equal comparison between two numbers or other mathematical expressions e.g. 2x > 4.

We have: -1 -10a < -1 or 10 + 3a ≤ -5 and we want to solve for the variable "a".

-1 -10a < -1      or  10 + 3a ≤ -5

-10a < -1 + 1    or  3a ≤ -5 - 10

-10a < 0          or  3a ≤ -15  

a < 0/(-10)      or   a ≤ -15/3

a > 0              or   a ≤ -5

Since a a > 0  is the same as 0 < a. We can say:

0 < a  or a ≤ -5

Thus,  0 < a ≤ -5

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The domain of the vector function is : ( -6, -2) ∪ ( -2, 6)

The given vector function can be correctly expressed as:

r(t) = (t-2)i / (t+2) + sintj + ln(36-t²)k²

The domain of the given function can be determined by finding the domain of each respective component.

(t-2)i / (t+2)

Not defined, t = -2

Thus, the domain of the first component of the vector = (-∞, 2) ∪ (2, ∞)

The 2nd component = sin t

No restriction on t,

The 3rd component of the function is ㏑(36 - t²)

we know,

Natural number is defined for +ve numbers,

i.e.

36 - t² > 0

(6 + t) (6 - t) > 0

thus, it satisfies the inequality -6 < t < 6

The third domain = (-6,6)

Hence, the domain of the vector function is : ( -6, -2) ∪ ( -2, 6)

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The quadratic function to represent the total area of the park and the path will be 6(x² + 7x + 6).

Given that:

Width, W = x

Length, L = 6x

Path width, d = 3

The rectangle's area will be given as,

Area of the rectangle = L × W square units

The quadratic function to represent the total area of the park and the path will be given as,

A = (x + 2 · 3) (6x + 2 · 3)

A = (x + 6)(6x + 6)

A = 6(x + 6)(x + 1)

A = 6(x² + 7x + 6)

The quadratic function to represent the total area of the park and the path will be 6(x² + 7x + 6).

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The angle BFC is the angle that is complementary to AFB

Whenever the sum of two angles adds up to 90 degrees, they are defined as complementary angles. Take 30 and 60 degrees, for instance; they are complementary angles.

From the definition we have to find the angle when if added to AFB would give us the sum of 90 degrees

AFC is a 90 degree angles

We have AFC = AFB + BFC

90 = 78 + BFC

BFC  = 90 - 78

= 12

Hence the angle BFC is the complementary angle

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Each person would get approximately 0.67 small pizzas when 12 friends share 8 small pizzas equally.

If 12 friends shared 8 small pizzas equally, we can divide the total number of pizzas by the number of friends to determine how much pizza each person gets.

Total number of pizzas = 8 small pizzas

Number of friends = 12

To find how much pizza each person gets, we divide the total number of pizzas by the number of friends;

Pizza per person = Total number of pizzas/Number of friends

Pizza per person = 8 small pizzas / 12 friends

Pizza per person = 0.67 small pizzas

Therefore, each person would get 0.67 small pizzas.

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Answer:

Rs 2150.81.

Step-by-step explanation:

The interest rate for the first two years is 6% per annum, which is halved for each six-month period. Therefore, the interest for the first two years would be (6950*(1+(0.03))^8) - 6950 = Rs 1373.53.

For the third year, the interest rate is 9% per annum, which is also halved for each six-month period. Therefore, the interest for the third year would be (6950*(1+0.045))^2 - 6950 = Rs 777.28.

Hence, the total compound interest for three years would be Rs 2150.81.

Answer:

Step-by-step explanation:

You want the number of day passes sold for $61 and weekend passes sold for $110 if 257 more day passes were sold, and sales totaled $307745.

Let w represent the number of weekend passes sold. Then w+257 is the number of day passes sold. The total revenue is ...

  61(w+257) +110(w) = 307745

Simplifying the equation, we have ...

  171w +15677 = 307745

  171w = 292068 . . . . . . . . subtract 15677

  w = 1708 . . . . . . . . . . . divide by 171

  w+257 = 1965 . . . day passes sold

1965 day passes and 1708 weekend passes were sold.

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The area of the circular pateo is 50.24 square yards.

Remember that for a circle of radius R, the area is given by the formula:

A = pi*R²

Where pi = 3.14

Here we know that the patio is circular, and it has a diameter of 4 yards, then the radius is:

R = 4yd/2

R = 2 yd

Replacing that in the area formula we will get:

A = 3.14*(2yd)²

A = 50.24 yd²

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Answer:

[tex]\huge\boxed{\sf x = 10\°}[/tex]

Step-by-step explanation:

According to the statement,

92° + x + 78° = 180°

170° + x = 180°

x = 180° - 170°

[tex]\rule[225]{225}{2}[/tex]

Step-by-step explanation:

3.3% = .033 in decimal

Use the compounding formula

a)  P(t) = 18000 (1 + .033)^t        

b)   for t =2 this computes to 19207.6  bacteria

The annual premium for a Whole Life insurance policy, for the healthy male, would be A. $ 2, 881.61

From the given table, a 28 year old male would have to pay $ 17. 76 for each $ 1,000 of coverage of Whole Life Insurance.

For a policy that is worth $ 162, 253 therefore, the annual premium would therefore be:

= Amount per thousand / 1, 000 x  Policy coverage

= 17. 76 / 1, 000 x 162, 253

= 0.01776 x 162, 253

= $ 2, 881.61

In conclusion, the annual premium is $ 2, 881.61 .

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m² × m² is equal to m⁴.

w³ × w² is equal to w⁵.

5k³ × 4k⁴ × k is equal to 20k⁸.

The length of each side of the square is 9x.

A simplification of the expression 28x³ ÷ 4x is 7x².

In Mathematics and Geometry, the area of a rectangle can be calculated by using the following mathematical equation:

A = LB

Where:

By substituting the given parameters into the formula for the area of a rectangle, we have the following;

Area of rectangle = (27x) × (3x)

Area of rectangle = 81x²

Note: Area of square = Area of rectangle

Area of square = (side length)²

81x² = (side length)²

Side length = √(81x²)

Side length = 9x

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The theoretical probability of drawing a green or red ticket is 1/2 or 0.5.

We have,

There are a total of 3 + 4 + 5 + 6 = 18 tickets in the basket.

The probability of drawing a yellow ticket.

= 4/18

Since there are 4 yellow tickets out of 18 total tickets.

The probability of not drawing a yellow ticket is equal to the probability of drawing a green, blue, or red ticket.

There are 3 + 5 + 6 = 14 tickets that are not yellow.

The probability of not drawing a yellow ticket.

= 14/18

= 7/9

To find the probability of drawing a green or red ticket, we need to add the probabilities of drawing a green ticket and a red ticket.

The probability of drawing a green ticket.

= 3/18

The probability of drawing a red ticket.

= 6/18

Now,

The probability of drawing a green or red ticket is

= 3/18 + 6/18

= 9/18

= 1/2

Thus,

The theoretical probability of drawing a green or red ticket is 1/2 or 0.5.

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The volume of a cube is calculated by multiplying the length of one side by itself twice. In this case, the volume of the foam cube is 5 in. x 5 in. x 5 in. = 125 cubic inches.

Density is calculated by dividing the mass of an object by its volume. In this case, the density of the foam cube is 62 g / 125 cubic inches = 0.496 g/cubic inch.

So, the volume of the foam cube is 125 cubic inches and its density is 0.496 g/cubic inch.

The area of the rhombus is derived to be 70 square units

In calculating for the area of a rhombus, we multiply the length of its two diagonals and divide the result by two

For the given rhombus, we have diagonals:

5 + 5 = 10 and 7 + 7 = 14

thus;

Area of the rhombus = (10 × 14)/2

Area of the rhombus = 140/2

Area of the rhombus = 70 square units.

Therefore, the area of the rhombus is derived to be 70 square units.

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Answer:

Step-by-step explanation:

Complementary means angles that add up to 90°

Based on that you can write and equation by adding the 2 angles and making equal to 90

2x+6+1/2x=90          combine like terms on left

5/2x+6=90               subtract both sides by 6

5/2x=84                   multiply by the reciprocal of 5/2 => 2/5

x=168/5 or 33.6

Answer:5.03

1.26 are correct

Step-by-step explanation:We can solve this quadratic equation in cos(θ) by using the substitution u = cos(θ):

5u^2 - 8u + 2 = 0

We can use the quadratic formula to solve for u:

u = (-b ± sqrt(b^2 - 4ac)) / 2a

where a = 5, b = -8, and c = 2. Substituting these values, we get:

u = (8 ± sqrt(64 - 40)) / 10

u = (8 ± 2sqrt(6)) / 10

Therefore, either:

Answer:

Answer:

= 6 R 25

= 6 25/27

187 divided by 27 equals

6 with a remainder of 25

Step-by-step explanation:

It should be noted that 81.85% of the scores are between 72 and 87.

The probability that a score is greater than 77 is approximately 0.8413.

a) The z-score for 72 is calculated as:

z = (72 - 82) / 5 = -2

The z-score for 87 is calculated as:

z = (87 - 82) / 5 = 1

0.8413 - 0.0228 = 0.8185

So, approximately 81.85% of the scores are between 72 and 87.

b) The z-score for 77 is calculated as:

z = (77 - 82) / 5 = -1

1 - 0.1587 = 0.8413

Therefore, the probability that a score is greater than 77 is approximately 0.8413 (or 84.13%).

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An expression that represent PS include the following: C. (NP + NQ + QR)/NR - NR.

In Mathematics and Geometry, the Tangent Secant Theorem states that if a secant segment and a tangent segment are drawn to an external point outside a circle, then, the product of the length of the external segment and the secant segment's length would be equal to the square of the tangent segment's length.

By applying the Tangent Secant Theorem to this circle, we have the following:

NP × PS = NQ × QR

PS = (NQ × QR)/NP

In terms of line segment NR, the expression can be rewritten as follows;

(NP + NQ + QR)/NR - NR

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a) An equation that represents the amount of money that Gilberto

receives during a school year:  y = 5 + (0.5) x

b) The number of correct answers Gilberto needs to buy a new shirt that costs $25 = 40

Let us assume that y represents the amount of money and x represents the number of correct answers.

We know that One dollar = 100 cents.

so, 50¢ = 0.5 dollars

From the described informtaion, we can write the equation that represents the amount of money that Gilberto receives during a school year as: y = 5 + (0.5) x

Now we need to find the number of correct answers Gilberto needs to buy a new shirt that costs $25

i.e., for y = 25, we need to find the value of x.

Substitute y = 25 in above equation.

25 = 5 + (0.5) x

We solve this equation for x

(0.5) x = 20

x = 20 / (0.5)

x = 40

This means that he needs to give 40 correct answers.

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The complete question is:

Gilberto's  grandfather gives Gilberto $5 and then 50¢ for each math question he answers correctly on his math exams for the year.

a. Write an equation that represents the amount of money that Gilberto

receives during a school year. Explain what the variables and numbers mean.

b. Use the equation to find the number of correct answers Gilberto needs to buy a new shirt that costs $25. Show your work.

The correct statement regarding whether the graph represents a function is given as follows:

No, it is not a function.

A graph represents a function if it has no vertically aligned points, that is, each value of x is mapped to only one value of y. Vertically aligned points mean that a value of x is mapped to multiple values of y, that is, a single input is mapped to multiple outputs which disqualify the relation as a function.

In the graph, we have that at x = 0 = y-axis, the function has three numeric values, which is a case of vertically aligned points, hence the graph does not represent a function.

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Answer: A' will be at (-2,0)

Step-by-step explanation:

Reflecting things over a line can be done in several different ways, I will try to explain the one I use and the easiest one. What I use is to look at it and find the shortest distance between the line and A, in this case, the shortest distance is at (-.5,1.5), since A is at (1,3) the distance between them is (-1.5,-1.5) If you double this change you will find how far away the new point A is from the Old point, so its a change of (-3,-3). (1,3)+(-3,-3) gets you to the final points of (-2,0)

Another, probably easier, method is to go down from point A until you hit the line, and then go over that many points. In this case, you go down 3 from A to hit the line, and then go 3 to the left which reflects it over the line. Either way you do it, you get (-2,0)

The radius of the circle is 35.98 in, the diameter is 71.96 in. and the area of the circle is 4066.98 sq. in.

Here, the circumference of circle is C=226.08 in

We know that the formula for the circumference of circle is C = 2πr

Using this formula we find the value of radius 'r',

C = 2πr

226.08 = 2πr

r = 226.08 / 2π

r = 35.98 in

And the diameter of the circle would be,

d = 2r

d = 2 × 35.98

d = 71.96 in.

And the area of the circle would be,

A = π × r²                                                                  

A = π × 35.98²

A = 4066.98 sq. in.

Therefore, the required area is  4066.98 sq. in.

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The complete question is:

Solve for radius and diameter then what is the area of the circle if the circumference of circle is C=226.08 in.

Answer: 6

Step-by-step explanation:

There are six possible ways that the three boys can initially choose shirts: ABC, ACB, BAC, BCA, CAB, CBA.

Answer:

C) 23/32

Step-by-step explanation:

count how many lines there are in all

32

Then count from beginning to X

23

The distance of X is 23/32

The sample of hospitals would we need to be 99 percent confident that the sample mean is within 0.5 days of the population mean is A. 48

We want to find the sample size (n) that would give us a confidence interval of 0.5 days, so we can rearrange the formula to solve for n:

n = (z*σ/CI)^2

Plugging in the given values:

z = 2.576 (for 99% confidence level)

σ = 1.2 days

CI = 0.5 days

n = (2.576 × 1.2/0.5)²

n ≈ 48

Therefore, the correct option is A.

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