Alvin decided to buy Samantha some candy. He bought her 6 lollipops and 5 petits 4 for $1.40 and then he decides to buy Megan 5 lollipops and 6 petits 4 for $1.35. How much did each cost

Answer:

I believe it's (2d - 1) • (d + 2)

Step-by-step explanation:

Step-1 : Multiply the coefficient of the first term by the constant   2 • -2 = -4

Step-2 : Find two factors of  -4  whose sum equals the coefficient of the middle term, which is   3 .

     -4    +    1    =    -3

     -2    +    2    =    0

     -1    +    4    =    3    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -1  and  4

                    2d2 - 1d + 4d - 2

Step-4 : Add up the first 2 terms, pulling out like factors :

                   d • (2d-1)

             Add up the last 2 terms, pulling out common factors :

                   2 • (2d-1)

Step-5 : Add up the four terms of step 4 :

                   (d+2)  •  (2d-1)

            Which is the desired factorization

Answer -  (2d - 1) • (d + 2)

Answer:

Step-by-step explanation:

please tell me what is -9d×2-d×2

-9d×2-d×2

-18d -2d

-20d

Answer:

(1, -7) .................

The probability that the metal ball lands on green or red is 10/19

In the game of roulette, the roulette wheel has 38 slots, numbered from 1 to 36, as well as a 0 slot and a 00 slot. Of the numbered slots, half are red and half are black, and the 0 and 00 slots are green.

So, the probability of the ball landing on green is 2/38, since there are two green slots out of the total of 38 slots on the wheel.

Similarly, there are 18 red slots and 18 black slots, so the probability of the ball landing on red is 18/38 and the probability of the ball landing on black is also 18/38.

To calculate the probability of the ball landing on green or red, we need to add the probabilities of the ball landing on green and the ball landing on red, since these two events are mutually exclusive (i.e., the ball cannot land on both green and red at the same time).

Thus, the probability of the ball landing on green or red is

2/38 + 18/38 = 20/38 = 10/19

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Answer:

5

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Divide 24 by 6 regularly, and since two negatives is a positive then your answer is positive.

Answer:

4

Step-by-step explanation:

It's the same as you dividing (positive) 24 and (positive) 6.

Answer:

FOREVER AND ALWAYS

Step-by-step explanation:

i love you more than you know:( <3

see you someday

The compound inequality which represents the given situation is 20 < x < 30.

A difference between two values indicates whether one is smaller, larger, or basically not similar to the other.

In other words, inequality is just the opposite of equality for example 2 =2 then it is equal but if I say 3 =6 then it is wrong the correct expression is 3 < 6.

Let's say x represents the spend.

As per the given,

You can spend less than $30,

x < 30

You must also spend more than 20.

x > 20

Compound,

30 < x < 20

Hence "The compound inequality which represents the given situation is 20 < x < 30".

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The required example of two independent events A, B ⊆ S such that P(A) ≠ 0, P(A') ≠ 1, P(B) ≠ 0, and P(B') ≠ 1 is A = {1, 2, 3} and B = {1, 4, 5}.

Let S = {1, 2, 3, 4, 5, 6} and let P be such that P({n}) = 1/6 for each n ∈ S.

We need to give an example of two independent events A, B ⊆ S such that P(A) ≠ 0, P(A') ≠ 1, P(B) ≠ 0, and P(B') ≠

1.Since each element in S occurs with equal probability of 1/6, hence P(A) ≠ 0 and P(A') ≠ 1.

Similarly, P(B) ≠ 0 and P(B') ≠ 1.  

Let's take A = {1, 2, 3} and B = {1, 4, 5}.

Now, P(A) = 3/6 = 1/2, P(A') = 1 - P(A) = 1/2, P(B) = 3/6 = 1/2, P(B') = 1 - P(B) = 1/2

Now, we need to show that A and B are independent i.e. P(A ∩ B) = P(A)P(B). A ∩ B = {1}, therefore P(A ∩ B) = 1/6

Since A and B are not disjoint, we have to subtract P(A ∩ B) = 1/6 from both P(A) and P(B). P(A)P(B) = (1/2 - 1/6)(1/2 - 1/6) = 5/36

It can be observed that P(A ∩ B) = P(A)P(B) and thus, A and B are independent events.

Therefore, the required example of two independent events A, B ⊆ S such that P(A) ≠ 0, P(A') ≠ 1, P(B) ≠ 0, and P(B') ≠ 1 is A = {1, 2, 3} and B = {1, 4, 5}.

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Answer:

I forgot the answer

Step-by-step explanation:

3.2*10^8, 1.2*10^8, 7*10^5, 5*10^3

Answer:

a.//

Step-by-step explanation:

i hope helps u ! plz follow me

Answer: A.) $4 per shirt

Step-by-step explanation:

Slope of the graph is calculated as the ratio or proportion of chasing ein the y and x axis of a graph.

Slope(m) = [change in y / change in x]

One can draw a right angle triangle to meet the line of best fit provided in the graph to obtain the values for both the y and x axis.

HERE,

y2 = 120, y1 = 40 and x2 = 50, x1 = 30

Slope = (y2 - y1) / (x2 - x1)

Slope = (120 - 40) / (50 - 30)

= 80/20

Slope = 4

$4 per shirt

The value of the rate of growth in Japan is - 0.55.

From the question above, :Birth rate = 7.7 per thousand

Death rate = 9.8 per thousand

Net migration = 0.55 per thousand

The rate of growth can be calculated using the following formula:

r = (birth rate - death rate) + net migration

Where,r = rate of growth

birth rate = number of live births per thousand in a population in a given year

death rate = number of deaths per thousand in a population in a given year

net migration = the difference between the number of people moving into a country (immigrants) and the number of people leaving a country (emigrants) per thousand in a given year

Putting the values in the formula we get,r = (7.7 - 9.8) + 0.55r = - 1.1 + 0.55r = - 0.55.

Therefore, the rate of growth in Japan is - 0.55.

Your question is incomplete but most probably your full question was:

thenet migration is confusing me. i thought of using the formula:[ (births + immigration) - (deaths + emmigration)] / total

population • 100 but im not sure how to do it with net migration.

Japan's birth rate is 7.7 per thousand and its death rate is 9.8 per thousand with a net migration of 0.55 ner thousand. Calculate r for Japan

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Answer:

2:10 or 1:5

Step-by-step explanation:

Answer: 4 squares to 1 triangle

Step-by-step explanation: both can be divided by two and that is the largest number they can be divided into

the slope of the line above is -2

Answer:

v = -16

Step-by-step explanation:

→Distribute the 5 to (-7v - 11):

14 - 10v + 11 = 20v - 35v - 55

→Add like terms:

25 - 10v = -15v - 55

→Add 15v to both sides:

25 + 5v = -55

→Subtract 25 from both sides:

5v = -80

→Divide both sides by 5:

v = -16

Answer:

\( \boxed{v = - 16} \)

Step-by-step explanation:

\( = > 14 - 10v + 11 = 20v + 5( - 7v - 11) \\ \\ = > 14 + 11 - 10v = 20v + (5 \times ( - 7v)) - (5 \times 11) \\ \\ = > 25 - 10v = 20v - 35v - 55 \\ \\ = > 25 - 10v = - 15v - 55 \\ \\ = > 25 - 10v + 15v = - 55 \\ \\ = > 25 + 5v = - 55 \\ \\ = > 5v = - 55 - 25 \\ \\ = > 5v = - 80 \\ \\ = > v = - \frac{80}{5} \\ \\ = > v = - 16\)

Answer: D is incorrect

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

If Francine adds 8.0 ml of 3.0 m KOH to 4.0 ml of 6.0 m HBr, then the resulting mixture will be neutral in nature.

To determine whether the mixture is acidic, basic or neutral, litmus test is done or some other tests can also be performed. However, the mathematical calculations help in understanding the reason behind the result of litmus test.

In the given problem, the volume and molarity of the solutions are given, so number of moles can be easily calculated.

Number of moles of KOH = (8.0 mL) x (3.0 mol/L) / 1000 mL/L = 0.024 mol

Number of moles of HBr = (4.0 mL) x (6.0 mol/L) / 1000 mL/L = 0.024 mol

Considering the chemical reaction between KOH (which is a strong base) and HBr ( which is a strong acid), the resulting product will be a salt along with water (in the form of vapors).

KOH + HBr → KBr + H2O

Since, the number of moles of KOH and HBr is same, therefore the resultant solution will have salt with neutral pH.

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Answer:

option D is correct

Step-by-step explanation:

Given data

From the given expression/options of answers, option D is correct

This is because the given expression in the attached file corresponds to the terms in option D

Step-by-step explanation: 404 = 4.04 x 10 x 10

404=4.04 x 10^2

Step-by-step explanation:

16a^2-56a+49

used the an app to find it

Answer:

8

Step-by-step explanation:

130/15=8 and remainder 10

Answer:

(2,7), (6,-2),

Step-by-step explanation:

After finding the points you plug them in to the distance formula:

d=√((x2-x1)²+(y2-y1)²)

d=√[(6-2)²+(-2-7)²]

Answer:

x=10

Step-by-step explanation:

If we subtract 2 from 52 we get 50 and ten mutiplys into 50.

Answer:

108 degrees

Step-by-step explanation:

3x+x+6x=10x, 180/10=18 and 18x6 is 108

Answer:

-3y+8z

Step-by-step explanation:

Answer:2x - 2y + 8z

Step-by-step explanation:

Values that will satisfy the given inequality be 5,6 and 7.

What do you mean by natural number?

All positive numbers from 1 to infinity are considered natural numbers and are therefore a component of the number system. Because they don't contain zero or negative numbers, natural numbers are also known as counting numbers. They are a subset of real numbers, which only include positive integers and exclude negative, zero, fractional, and decimal numbers.

Given inequality:

n > 4

Values that will satisfy the given inequality be 5,6 and 7.

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The distance around the track along the inside edge of each lane is 614.44 yd for lane 1, 634.88 yd for lane 2, 655.32 yd for lane 3, 675.76 yd for lane 4, 696.20 yd for lane 5, 716.64 yd for lane 6, 737.08 yd for lane 7 and 757.52 yd for lane 8.

The distance around the track along the inside edge of each lane can be calculated using the following formula:

Distance = (2 × 44 yd) + (2 × π × radius)

where the radius is equal to 44 yd + (lane number × 10 yd).

For lane 1, the radius is equal to 44 yd + (1 × 10 yd) = 54 yd. Therefore, the distance around the track along the inside edge of lane 1 is (2 × 44 yd) + (2 × π × 54 yd) = 614.44 yd.

The same calculation can be done for the other lanes, with the radius increasing by 10 yd for each lane. The radius for lane 2 is 64 yd, for lane 3 is 74 yd, for lane 4 is 84 yd, for lane 5 is 94 yd, for lane 6 is 104 yd, for lane 7 is 114 yd and for lane 8 is 124 yd.

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A college food court surveyed students to see how many drink tea and how many drink soda using the Venn Diagram:

In order to solve problems based on these sets, we may use a Venn diagram to depict the logical link between sets and their components. Although other closed figures like squares may be used, a Venn diagram commonly utilises intersecting and non-intersecting circles to indicate the relationship between sets.

A college food court surveyed 407 students to see how many drink tea and how many drink soda.

a.) The number of students who do not drink tea is

197 + 59 = 256

b.) The number of students who drink tea or soda or both is

88 + 63 + 197 = 348

c.) The number of students who drink tea but do not drink soda is 88.

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Complete question:

A college food court surveyed 407 students to see how many drink tea and how many drink soda. The Venn diagram below shows the results. (Each number gives the number of students who fall into that Venn diagram category.) -All students in the survey Drink tea Drink soda 88 63 197

(a) How many of the students drink soda ?

(b) How many of the students drink tea or soda (or both)? IS students

(c) How many of the students drink tea but do not drink soda?

The value of quantity d  in which a = 5.7 , b = 4.7 and c is given to be 72 is 0.12.

We are given in the question that the value of a is 5.7m, b is 4.7s, c is 72 m/s and \(d=\frac{a^{3}}{cb^{2}}\)

We have to find the value of quantity d.

Putting the values of quantities a, b and c in the given formula of quantity d, we will get,

\(d=\frac{(5.7)^{3}}{(72)(4.7)^{2}}\)

First we will find the values of the cube of 5.7 and square of 4.7.

Hence,

\((5.7)^{3}=185.193\\\\(4.7)^{2}=22.09\)

Hence, the quantity d will become:-

\(d=\frac{185.193}{(72)(22.09)}\)

Simplifying the above equation, we get quantity d as :-

d ≈ 0.116 ≈ 0.12

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