What is -1.5 + 4 the answer

Answer:

D.4 3/4

Step-by-step explanation:

hope it helps you

Answer: 2.5, 5.3

Step-by-step explanation:

\(-16t^2 +126t=217\\ \\ 16t^2 -126t+217=0\\\\t=\frac{-(-126) \pm \sqrt{(-126)^2 -4(16)(217)}}{2(16)}\\\\t \approx 2.5, 5.3\)

The lower and the upper class limit are as follows

interval  lower limit  upper limit

10-14          10                14

15-19          15                19

20-24         20              24

25-29           25            29

This is further explained below.

Generally, The lower class limit and the upper-class limits are just the minima and maximum values that are allowed in each class, respectively: The gap that exists between the upper-class limit and the lower class limit is referred to as the class interval.

In conclusion, The lower and the upper class limit are as follows

interval  lower limit  upper limit

10-14          10                14

15-19          15                19

20-24         20              24

25-29           25            29

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Answer:

80+96

= 176 total ounces of jam

176 ÷ 8

22 total jars

Answer:

Wym lol

Step-by-step explanation:

Answer:

Wut...

Step-by-step explanation:

Ello m8 but what do you need?

Answer:

y = 1/3x - 1

Step-by-step explanation:

1. if the gradient is -3, then the gradient of the perpendicular line should be 1/3.

2. substitute the new gradient and points into y - y1 = m (x - x1)

3. rearrange/move everything to give you the equation in y = mx + c form

The required equation is, y = 40 + 35 x, and the cost for 10 months will be 390.

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Total charges of gym = Initial service fee +  $ 35 per month

Thus, the total charges for 6 months = Initial service fee +  35 × 6 =  Initial service fee + 210

According to the question,

Initial service fee +  210 = 250

⇒ Initial service fee = 250 - 210 = $ 40

Hence, the total charges for the gym for x months = 40 + 35x. Here, y represents the total charges for x months,

⇒  y = 40 + 35 x

The total cost of the membership after 10 months will be calculated as:-

y = 40 + 35 x

y = 40 + 35 x 10

y = 390

Therefore, the required equation is, y = 40 + 35 x, and the cost for 10 months will be 390.

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The key distinction between a parallelogram and a trapezoid lies in their side properties and the number of parallel sides they possess.

A parallelogram and a trapezoid are different geometric shapes with distinct properties and characteristics.

1. Shape: A parallelogram is a quadrilateral with opposite sides that are parallel. It has four sides and four angles, with opposite angles being equal. The opposite sides of a parallelogram are also congruent. In contrast, a trapezoid is a quadrilateral with only one pair of parallel sides. The other two sides are non-parallel.

2. Angles: In a parallelogram, the opposite angles are equal. The sum of the interior angles of a parallelogram is always 360 degrees. In a trapezoid, the angles can vary, and the sum of the interior angles is always 360 degrees as well.

3. Sides: In a parallelogram, the opposite sides are equal in length. In a trapezoid, the parallel sides are not necessarily congruent.

4. Diagonals: The diagonals of a parallelogram bisect each other, meaning they divide each other into two equal parts. In a trapezoid, the diagonals do not bisect each other.

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Answer:

b and d

Step-by-step explanation:

Answer:

Your answer would be p V q  and q->p. Hope I helped :D

a) The net of a pyramid is a flattened view of each face and the base along with its dimensions.

Therefore, a net of a  pyramid with a base of 6 in and slant edges of 4 in is drawn.

( find the attachment figure below)

b)Surafe area of Pyramid = 55.68 sq in

The surface area of a pyramid is the sum of the surface area of the base and 4 triangles

Surafe area of Pyramid = Surface area of Square base + 4(Surface area of Triangle)

i) Surface area of Square base= 4(side) = 4*6 = 24 sq in

ii) Surface area of Triangle =  \(\sqrt{s (s-a) (s - b) (s - c)\)

here s = (a + b + c)/2

here a= 4 b= 6 c= 4

=> s = (4 + 6 + 4)/2 = 14/2 = 7

The surface area of the Triangle =  \(\sqrt{s (s-a) (s - b) (s - c)\)

= \(\sqrt{7 (7-4) (7 - 6) (7- 4)\)

= \(\sqrt{7 (3) (1) (3)\)

=\(\sqrt{63}\)

=\(3\sqrt{7}\)

=3(2.64)

=7.92 sq in

Surafe area of Pyramid = Surface area of Square base + 4(Surface area of Triangle)

Surafe area of Pyramid = 24+4(7.92) = 24+31.68 = 55.68 sq in

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The measure of arc BC is 720 times the measure of angle BAC.

Given that AC is the diameter of the circle and AB is a chord with a length of 16 units, we need to find BC (the length of the other chord) and mBC (the measure of angle BAC).

To find BC, we can use the property of chords in a circle. If two chords intersect within a circle, the products of their segments are equal. In this case, since AB = BC = 16 units, the product of their segments will be:

AB * BC = AC * CE

16 * BC = 2 * r * CE (AC is the diameter, so its length is twice the radius)

Since the area of the circle is given as 289 square units, we can find the radius (r) using the formula for the area of a circle:

Area = π * r^2

289 = π * r^2

r^2 = 289 / π

r = √(289 / π)

Now, we can substitute the known values into the equation for the product of the segments:

16 * BC = 2 * √(289 / π) * CEBC = (√(289 / π) * CE) / 8

To find mBC, we can use the properties of angles in a circle. The angle subtended by an arc at the center of a circle is double the angle subtended by the same arc at any point on the circumference. Since AC is a diameter, angle BAC is a right angle. Therefore, mBC will be half the measure of the arc BC.

mBC = 0.5 * m(arc BC)

To find the measure of the arc BC, we need to find its length. The length of an arc is determined by the ratio of the arc angle to the total angle of the circle (360 degrees). Since mBC is half the arc angle, we can write:

arc BC = (mBC / 0.5) * 360

arc BC = 720 * mBC

Therefore, the length of the arc BC equals 720 times the length of the angle BAC.

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(a) Is this an observational study or an experiment?

ans=Observational study – no treatment was imposed

(b) What are the explanatory and response variables?

ans=explanatory – time spent in child care from birth to age 4 response – adult rating of children’s behavior

d) Does this study show that child care causes children to be more aggressive? Explain.

No. Observational studies cannot show cause-and-effect

Researchers=someone whose job is to study a subject carefully, especially in order to discover new information or understand the subject better: She is a leading researcher in the field.

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anSwer:

120,000x

Step-by-step explanation:

1.2(100000)

The probability that the flip results in a head is given as Pr[H] = 23. Therefore, the probability that the flip results in a tail is Pr[T] = 1 - Pr[H] = 1 - 23 = 13.

Let A be the event that a white marble is selected. We need to find the conditional probability Pr[H|A], i.e., the probability that the flip resulted in a head given that a white marble was selected.

Using Bayes' theorem, we have:

Pr[H|A] = (Pr[A|H]*Pr[H]) / Pr[A]

Pr[A|H] is the probability of selecting a white marble given that the flip resulted in a head. This is given by (9/25), since there are 9 white marbles out of 25 in the first urn.

Pr[A] is the total probability of selecting a white marble, which can be found using the law of total probability:

Pr[A] = Pr[A|H]*Pr[H] + Pr[A|T]*Pr[T]

= (9/25)*0.23 + (1/11)*0.13

= 0.0888 + 0.0118

= 0.1006

Pr[A|T] is the probability of selecting a white marble given that the flip resulted in a tail. This is given by (1/11), since there is only 1 white marble out of 11 in the second urn.

Therefore,

Pr[H|A] = (9/25 * 0.23) / 0.1006 = 0.6508

Hence, the probability that the flip resulted in a head given that a white marble was selected is 0.6508 (or approximately 0.65).

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The solution of the given system of equations is x = -4, y = 5 and z = 2 is the answer.

The system of equations given below:x + 2y + 3z = 11;2x + 4y + 5z = 21;3x + 5y + 6z = 27.

Here, we will solve this system of equations using inverse of the matrix method as follows:

We can write the given system of equations in matrix form as AX = B where, A = [1 2 3; 2 4 5; 3 5 6], X = [x; y; z] and B = [11; 21; 27].

The inverse of matrix A is given by the formula: A-1 = (1/ det(A)) [d11 d12 d13; d21 d22 d23; d31 d32 d33]  where,

d11 = A22A33 – A23A32 = (4 × 6) – (5 × 5) = -1,

d12 = -(A21A33 – A23A31) = -[ (2 × 6) – (5 × 3)] = 3,

d13 = A21A32 – A22A31 = (2 × 5) – (4 × 3) = -2,

d21 = -(A12A33 – A13A32) = -[(2 × 6) – (5 × 3)] = 3,

d22 = A11A33 – A13A31 = (1 × 6) – (3 × 3) = 0,

d23 = -(A11A32 – A12A31) = -[(1 × 5) – (2 × 3)] = 1,

d31 = A12A23 – A13A22 = (2 × 5) – (3 × 4) = -2,

d32 = -(A11A23 – A13A21) = -[(1 × 5) – (3 × 3)] = 4,

d33 = A11A22 – A12A21 = (1 × 4) – (2 × 2) = 0.

We have A-1 = (-1/1) [0 3 -2; 3 0 1; -2 1 0] = [0 -3 2; -3 0 -1; 2 -1 0]

Now, X = A-1 B = [0 -3 2; -3 0 -1; 2 -1 0] [11; 21; 27] = [-4; 5; 2]

Therefore, the solution of the given system of equations is x = -4, y = 5 and z = 2.

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The cost of the trainers in pounds which is $60 in the USA is £44.94

What is exchange rate?

The exchange rate between the dollar and the pound sterling is the amount at which both currencies exchange hands, I mean the amount of pound sterling that is given in lieu of $1, in this case, for every $1, the amount of pound sterling that is equivalent to it is £0.749, which means that on the basis of the exchange rate the value of trainers in pounds can be determined as shown in details below:

$1 = £0.749

$60=60*£0.749

$60=cost a pair of trainers=£44.94

In short, a pair of trainers selling for $60 in the USA should cost £44.94 based on the exchange rate of $1 = £0.749

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The width of the pool is approximately 4.01 feet.

Mrs. Sanford plans to build a rectangular pool in her backyard, which will hold 9,000 gallons of water. The pool's height is 15 feet and its length is 20 feet. To determine the width of the pool, we need to first convert gallons to cubic feet, as 1 gallon equals approximately 0.1337 cubic feet.

So, 9,000 gallons * 0.1337 = 1,203.3 cubic feet of water. Now, we know that the volume of a rectangular pool is calculated using the formula V = LWH (Volume = Length * Width * Height). We have the volume (1,203.3 cubic feet), the height (15 feet), and the length (20 feet), so we can solve for the width (W):

1,203.3 = 20 * 15 * W
1,203.3 = 300 * W
W = 1,203.3 / 300
W ≈ 4.01 feet

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Answer:

Espero y esto te ayude :) si me falto algo lo siento.

Step-by-step explanation:

Si se oferta un producto al 10% de descuento, esto significa que el precio final del producto será 90% del precio original. Para hallar estos datos, debemos usar una regla de tres, de la siguiente forma:

100% 90%

-------------------- → ---------------------------

Precio Original Precio con Descuento?

SARAPES

- Ana: descuento (14), precio rebajado 126

Precio rebajado = 140.90 / 100 = 126

Descuento: 140 - 126 = 14

- Javier: descuento (8), precio rebajado 72

Precio rebajado = 80.90 / 100 = 72

Descuento: 80 - 72 = 8

ARETES

- Luis: descuento (5), precio rebajado 72

Precio rebajado = 50.90 / 100 = 45

Descuento: 50 - 45 = 5

- Ana: Precio original (60) , descuento (6), precio rebajado 54

Precio original: X.0,10 = 6

X = 60

Precio rebajado: 60 - 6 = 54

- Javier: Precio original (40) , descuento (4), precio rebajado 36

Precio original: X.0,10 = 4

X = 40

Precio rebajado: 40 - 4 = 36

The first order ODE that is not Bernoulli's equation is option (D) dx DX. Bernoulli's equation is in the form dy + P(x)y = Q(x)yn, where n is a constant not equal to 0 or 1.

Let's examine each option:

(A) dy + y = (inx)y: This is a Bernoulli's equation with P(x) = 1 and Q(x) = inx.

(B) dx/x + dy + 3xy = xy³: This equation can be rearranged to the form dy + (3x - y² - 1)dx/x = 0, which is a Bernoulli's equation.

(C) dx + dy + 2x²y = 3e²y: This equation can be rearranged to the form dy + (2x² - 3e²)ydx = 0, which is a Bernoulli's equation.

(D) dx DX: This is not in the form of dy + P(x)y = Q(x)yn and therefore not a Bernoulli's equation.

So, the correct answer is option (D) dx DX.

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Answer:

b≤2

Step-by-step explanation:

2+4b≤10

Subtract 2 from each side

2-2+4b≤10-2

4b≤8

Divide each side by 4

4b/4≤8/4

b≤2

All of the statements are false except statement d. Counter-examples are given for each false statement each and explained below.

a) The statement is incorrect because there may exist elements in set B that are not included in the union of sets A and B.

Counter-example: if we take A as {1} and B as {2}, we can see that B is not part of the union of A and B, denoted as A ∪ B.

(b) The statement is incorrect because the union of sets A and B can include elements that are not in set A.

Counterexample: Let A = {1} and B = {2}. Then (A ∪ B) = {1, 2}, and {1, 2} is not a subset of A since it contains an element (2) that is not in A.

(c) The statement is false because removing set B from the union of sets A and B may result in elements that are not present in set A.

Counterexample: Let A = {1} and B = {2}. Then (A ∪ B) - B = {1} - {2} = {1}, which is not equal to A.

(d) The statement is true because removing the set A from the set B minus A will result in set A itself.

(e) The statement is false because there can be cases where sets A, B, and C have overlapping elements, indicating that A is not disjoint from C.

Counterexample: Let A = {1}, B = {2}, and C = {1, 2}. Then A + B = {1, 2} and B + C = {1, 2}, but A ∩ C = {1} is not an empty set, so A and C are not disjoint.

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The probability that at least one person in a group of 5 randomly selected individuals has COVID-19 is approximately 0.82.

To calculate the probability of at least one person having COVID-19 in a group of 5, we can use the complementary probability approach. The complementary probability is the probability of the opposite event occurring, in this case, the event of no one in the group having COVID-19.

The probability of an individual not having COVID-19 is 1 - 0.31 = 0.69. Since the selection of each person is independent, the probability of all 5 people not having COVID-19 is 0.69 raised to the power of 5 (0.69^5), which equals approximately 0.193.

To find the probability of at least one person having COVID-19, we subtract the probability of none of them having COVID-19 from 1. Therefore, the probability of at least one person having COVID-19 in the group is 1 - 0.193 = 0.807 or approximately 0.82.

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Answer:

The answer is A: 1/25

Answer:

Step-by-step explanation:

You are given the equation 8x -3 +4x +3 = 180 and asked to simplify it and solve for x.

Collecting terms, we have ...

  (8 +4)x +(-3 +3) = 180

  12x + 0 = 180

Dividing by the coefficient of x gives ...

  x = 180/12 = 15

The value of x is 15.

Answer:

r = \(\sqrt{11}\)

Step-by-step explanation:

So we need to complete the square for both parts of the equation

First though we can add the 6 to the other side so we have x² + 2x + y² + 4y = 6

So first we can complete the square for x² + 2x

To do so we need to use \((\frac{b}{2} )^{2}\) to figure out the number we need to add to both sides

In this case our b is 2, so substituting this in we get \((\frac{2}{2} )^{2} =(1)^{2} =1\)

Here we add 1 to both sides and now we have x² + 2x + 1 + y² + 4y = 6 + 1

Now we can follow the same steps to complete the square for y² + 4y

Here our b is 4, so substituting this in we get \((\frac{4}{2} )^{2}=(2)^{2} =4\)

Now we add 4 to both sides and now we have x² + 2x + 1 + y² + 4y + 4 = 6 + 1 + 4

Now condensing everything we have (x + 1)² + (y + 2)² = 11

The formula for a circle is (x - h)² + (y - k)² = r²

In our equation we have r² = 11

To find the radius we need to take the square root of both sides \(\sqrt{r^{2}} =\sqrt{11}\) to get r = \(\sqrt{11}\)

When the trinomial 3x² - x - 10  is factored completely, one of its factors is 3x+5.

Solving the given trinomial 3x² - x - 10.

=>3x² - 6x+5x - 10

=>3x(x-2)+5(x-2)

=>(3x+5)(x-2)

The two factors of the given trinomial 3x² - x - 10 is (3x+5) and (x-2), but according to the given options, the correct answer is option C - 3x+5.

Thus, When the trinomial 3x² - x - 10  is factored completely, one of its factors is 3x+5.

Complete question: 3x² - x - 10

When this trinomial is factored completely, one of its factors is

A) x + 2

B) x - 5

C) 3x + 5

D) 3x - 2

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Answer:

13.2222222222

Step-by-step explanation: