John needs a total of $100 to buy a birthday present for his friend. He has already saved $35. If he saves $10 a week from his earnings what is the least number of weeks he must work to have enough money to buy the present?

Answer:

2 , 3 , 4

Step-by-step explanation:

Corresponding angles:  When two parallel lines are intersected by a transversal, the angles on the same side and same position of the transversal are same.

            ∠3 = ∠1

Vertically opposite angles: When two lines intersect, the opposite angles are congruent.

             ∠2 = ∠1

            ∠4 = ∠3

So, ∠1 = ∠2 = ∠3 = ∠4 = 60°

Answer:

Step-by-step explanation: 1 is the mode it has the most numbers that repeat

Answer:

The mode is 1.

Step-by-step explanation:

The mode is the number that occurs in a set the most. You can remember this as the word "most" and "mode" sounding similar.

Answer: y intercept is -1

Step-by-step explanation:

The equation of the line parallel to 3x+3y=6 that passes through the point (7,-1) is  y = -x + 8

The equation of a line can be represented as follows:

y = mx + b

where

The lines that are parallel have the same slopes.

Therefore, let's find the slope of the equation 3x+3y=6.

3x + 3y = 6

3y = - 3x + 6

divide through by 3

y = - x + 2

Therefore, the slope is - 1.

Let's find the y-intercept of the equation using (7, 1)

y = - x + b

1 = - 7 + b

b = 8

Therefore, the equation of the line is y = -x + 8

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Answer:

Yes.

Step-by-step explanation:

To decide if these triangles are similar, we need to check 2 criteria. The first is that the angles are all the same as their corresponding angles on the other triangle, which is true. The second is to check if the sides are all in the same proportional relationship. To do this, we need to put 40/50, 40/50, and 16/20 to see if they simplify to the same fraction (which is the proportion.) 40/50 and 40/50 simplify to the same fraction, 4/5. 16/20 also simplifies to 4/5, so the sides are all in the same proportion, which means the shapes are similar.

The area of the painting is 289 [tex]inches^{2}[/tex].

Given:

A square painting has a side length of 17 inches.

we know that,

Area of square = side * side.

= 17 inches * 17 inches

= 289 [tex]inches^{2}[/tex].

Therefore the area of the painting is 289 [tex]inches^{2}[/tex].

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Answer:

EGFB

Step-by-step explanation:

PQ= (105)^2 + (208)^2

PQ=233

Area = b*h

Area = 21840

RS = (210)^2 + (120)^2

RS = 241.87

Area = 1/2bh

Area = 1/2 (210)(120)

Area = 12600

The absolute value of the difference between the first and second numbers is 5.

Here we have to find the difference between the first and the second numbers.

There are three statements.

Let a, b, and c be the first, second, and third numbers respectively.

The first statement is that the sum of the three number is 96.

The second statement is that the first number is 6 times the third number.

a = 6c

The third statement is that the third number is 40 less than the second number.

c = b - 40

b = c + 40

The sum of the three numbers is 96.

a + b + c = 96

6c + c + 40 + c = 96

8c = 96 - 40

8c = 56

c = 7

As a = 6c and b = c + 40

Now put the value of c as 7 we have:

a = 6 × 7

= 42

b = 7 + 40

= 47

Difference between the first and second numbers= 47 - 42

= 5

Therefore the difference is 5.

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The equation which passes through (3,2) and slope 1/3 is:

y - 2 = 1/3 (x - 3)

Given, we have:

slope (m) = 1/3

Point = (3,2) = (x₁,y₁)

we are asked to determine the point slope form :

we know that:

point slope form:

y-y₁ = m(x-x₁)

substitute the above values in the formula:

y - 2 = 1/3 (x - 3)

Hence the correct option is B.

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If the degree of the polynomial is 3 with zeros 7i and 9/5, then the polynomial f(x) = [tex]5x^3-9x^2+245x-441[/tex]

The zeros of the polynomial = 7i and 9/5

Here the degree of polynomial is 3, therefore there will be three zeros in polynomial, here only 2 zeros are given. We have to find the third zero of the polynomial.

Here one of the polynomial is complex number, therefore another zero will be the conjugate of the complex zero

Therefore the equation will be

(x+7i)(x-7i)(5x-9) = 0

We have to solve the equation

([tex]x^2[/tex] -7ix+7ix+49)(5x-9) = 0

([tex]x^2[/tex] + 49)(5x - 9) = 0

[tex]5x^3-9x^2+245x-441 =0[/tex]

Therefore

f(x) = [tex]5x^3-9x^2+245x-441[/tex]

Hence, if the degree of the polynomial is 3 with zeros 7i and 9/5, then the polynomial f(x) = [tex]5x^3-9x^2+245x-441[/tex]

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PMF probability mass function:

2 - 0.03125, 3 - 0.15625, 4 - 0.3125, 5 -0.3125, 6 - 0.15625, 7 - 0.03125.

The probability of such a function is the degree to which an event will occur as a rational number.

A family has 2 adopted girls and 5 biological daughters.

Each naturally occurring child does have an equal chance of being a boy or a girl.

Out of the seven offspring, the probability mass function for girls is as follows:

B should stand for Boy, and G should stand for G.

Consequently, this is the probability mass function:

P(GGBBBBB) = ⁵C₀ x (0.5)⁰ x (0.5)⁵

                      = 0.03125

P(GGGBBBB) = ⁵C₁ x (0.5)¹ x (0.5)⁴

                      = 0.15625

P(GGGGBBB) = ⁵C₂ x (0.5)² x (0.5)³

                      = 0.3125

P(GGGGGBB) = ⁵C₃ x (0.5)³ x (0.5)²

                      = 0.3125

P(GGGGGGB) = ⁵C₄ x (0.5)⁴ x (0.5)¹

                      = 0.15625

P(GGGGGGG) = ⁵C₀ x (0.5)⁵ x (0.5)⁰

                      = 0.03125

Thus, the probability mass function for girls out of the 7 children is obtained.

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The inequality of the change of state of the gas in the driver's truck indicates;

Part A: The inequality  that represents the temperature at which the gas in the truck will be in liquid form is; -40 ≤ T ≤ 140

Part B: The graph is a shaded region bounded by two solid vertical lines at t = -40 and t = 140

Part C: The gas will be frozen because the temperature is below the freezing point temperature of the gas.

An inequality indicates the relationship between two expressions that are not equal

The temperature at which the gas freezes = -40 °F

Temperature at which the gas evaporates = 140 °F

Part A: The inequality that represents the temperature at which the gas in the truck will remain in liquid form, t is; -40 ≤ t ≤ 140

Part B: The description of the graph of the inequality is a region on the coordinate plane bounded by two solid vertical lines at x = -40 and x = 140, the region between the two solid vertical lines is shaded/.

Part C: The temperature of -49 °F obtained in January 1989 in Nome, Alaska is not in the feasible region of the graph of the inequality, therefore, the gas in the driver's truck will not remain in liquid form, and would freeze, such that the driver would not drive on the specified date.

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The researcher was using Investigator triangulation quality-enhancement strategy.

The Investigator triangulation strategy make use of more than one researcher, investigator or interviewer to study the data.This research strategy can help you improve the credibility and the validity of your findings.

Including the Investigator triangulation strategy , there are basically four types of triangulation strategies . The other three are listed below :

- Data Triangulation

- Theory Triangulation

- Methodological Triangulation

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The probability that Halima walks at least one way is 0.64

Calcualting Probability:

Probability is a branch of mathematics which is deals with the occurrence of a random event. The value of probability is expressed from zero to one but not more than 1. It is used to predict how likely events are to happen. The probability of an event 'E' is denoted by P(E).

Here we have

Halima either travels by bus or walks when she visits the town center

The probability that she catches the bus to town = 0.4

The probability that she catches the bus from town = 0.9

Let A and B be the events that she catches the bus to the town and the event that she catches the bus from the town respectively

=> P(A) = 0.4

=> P(B) = 0.9

The above events P(A) and P(B) are two independent events

Then the probability that she catches the bus to and from the town
=> P(A∩B) =  0.4 × 0.9 = 0.36

Therefore,

The Probability she walks at least one way P(A ∪ B) = 1 - P(A∩B)
=> P(A∪B) = 1 - 0.36

=>  P(A∪B) = 0.64

Hence,

The probability that Halima walks at least one way = 0.64

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Answer:

$1.80

Step-by-step explanation:

The probability is 0.1.

acc to our question-

Hence,The probability is 0.1.

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Using mathematical operations, we know that temperature after 6 p.m. will be -22.7°F.

So, the temperature after 6 p.m. will be:

The temperature at different times:

Now, calculate to get the temperature after 6 p.m. as follows:

Therefore, using mathematical operations, we know that the temperature after 6 p.m. will be -22.7°F.

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Answer:

A

Step-by-step explanation:

Domain is the set of x values, so we can cross off C and D as answer choices as those would be possible answer choices for range. Looking at the graph, you can see the graph continues infinitely. The domain of the function is all real numbers, or A.

The required equation is 20 + 2m = 15 + 4m. The number of miles for which Uber and Lyft would charge the same amount for the ride is 2.5 miles.

Uber charges a flat rate of $20 plus $2 per mile. Lyft charges a flat rate of $15 plus $4 per mile. We need to find out the equation and the number of miles for which Uber and Lyft would charge the same amount for the ride.

Let the charge of Uber and Lyft be represented by the variables C1 and C2. We can write the equations given below.

C1 = 20 + 2m

C2 = 15 + 4m

We need the charge for both companies to be equal.

C1 = C2

20 + 2m = 15 + 4m

Hence, the required equation is 20 + 2m = 15 + 4m. Now we will solve this equation to find the number of miles.

2m = 5

m = 2.5

Hence, the number of miles for which Uber and Lyft would charge the same amount for the ride is 2.5 miles.

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The distance between the two points is 8.25 units

The distance between two points in a plane is the length of the line segment separating the two locations. Typically, the equation d=((x2 - x1)2 + (y2 - y1)2) is used to calculate the distance between two locations. You may use this formula to get the separation between any two points on an x-y plane or coordinate plane.

The following is the formula for the separation between two points:

d= √(x₁-x₂)²+(y₁-y₂)²

Points (x1, Y1) and (x2, Y2)

As given in the question, the points are (-6, -6) and (-8, 2)

The distance between the two points is,

d= √(-6+8)²+(-6-2)²

d=√4+64

d=√68 units= 8.25 units

Therefore, the distance between the two points is 8.25 units

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The null hypothesis is rejected thus there is a significant difference in the incidence of lung cancer in all four groups.

When the p-value is less than 0.05, the null hypothesis that there is no difference between the means is rejected, and we come to the conclusion that there is a significant difference. The existence of a significant difference cannot be inferred if the p-value is higher than 0.05.

The null hypothesis in the given scenario was that all four groups will have the same incidence rate of lung cancer which is rejected.

An assertion that there is no correlation between two population measures is referred to as a null hypothesis. To prepare the ground for additional experimentation or study that explains the position of interest, researchers reject or refute the null hypothesis.

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By factorizing algebraic expression 30 - [tex]6x^3[/tex] using a common factor, the result will be option (A) 2(15 - [tex]3x^3[/tex])

The expression is given,

30 - [tex]6x^3[/tex]

The expression is the mathematical sentence that consist of different types of variables, numbers and the mathematical operators. The mathematical operators will be addition, subtraction, division and multiplication. The expression does not contains a equal sign or inequality signs

The expression is given,

30 - [tex]6x^3[/tex]

Take a common term outside

Here the common term is 2

30 - [tex]6x^3[/tex]  = 2((30/2) - [tex]6x^3[/tex] /2)

= 2(15 - [tex]3x^3[/tex])

Hence, by factorizing algebraic expression 30 - [tex]6x^3[/tex] using a common factor, the result will be option (A) 2(15 - [tex]3x^3[/tex])

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The solution of the algebraic equation is x = -2. The proof is elaborated below.

The algebraic equation given to us is 14(x + 1) = -7(4 + x). An equation is a mathematical statement that proves the equality of two mathematical expressions. The first step is to simplify the brackets. The equation becomes 14x + 14 = -28 - 7x. Now, we will add 7x to both sides of the equation. The equation is modified as 21x + 14 = -28. Now, we will subtract 14 from both sides of the equation. The equation is modified as 21x = -42. Now, we will divide both sides of the equation by 21. The equation is modified as x = -2.

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Answer:

Step-by-step explanation:

can’t be determined

Answer:

[tex]y=-\frac{1}{4}x-\frac{1}{4}[/tex]

Step-by-step explanation:

To find the equation in slope-intercept form, isolate [tex]y[/tex].

[tex]4y+x=-1 \\ \\ 4y=-x-1 \\ \\ y=-\frac{1}{4}x-\frac{1}{4}[/tex]

The sample of study is 100 business.

An outcome of a random experiment is a sample. A random variable is sampled when we choose one particular value from its range of potential values. A sample is that precise value. The probability distribution of the random variable determines the possible values and the likelihood of each. A sample is a condensed, controllable representation of a larger group. It is a subgroup of people with traits from a wider population. When population sizes are too big for the test to include all potential participants or observations, samples are utilized in statistical testing.

Given,

Snoopy brown is interested in the number of businesses that do not allow dogs in st. paul, mn. to conduct his study, he randomly selects 100 businesses listed in the st. paul phone book, calls them and asks their policy.

The sample of study is 100 business.

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The money left with Dan is £30  .

In the question ,

it is given that

the amount of money earned by Dan in a week is = £240  .

amount of money spent by Dan on rent is = 3/4 wage

amount of money spent by Dan on food is = 1/8 of wage

So ,

the total amount spent = amount spent on food + amount spent on rent

Substituting the values ,

we get ,

= 3/4 + 1/8 = 7/8 of his wage = (7/8)*240

= 210

so , total amount spent is £210 .

Amount left = amount earned - amount spent

= 240 - 210
= 30

Therefore ,The money left with Dan is £30  .

The given question is incomplete , the complete question is

Dan spends 3/4 of his wages on rent and 1/8 on food. If he makes £240 per week, how much money does he have left?

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Answer:

y=-4x-4

Step-by-step explanation:

we know the slope so put it in the slope intercept form

y=-4x

Now fill it in to find y intercept with the coordinates

0=-4(-1)

0=4

We need to subtract 4 to make this equation true so the y intercept is -4

The equation will become

y=-4x-4

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