PLEASE HELP!! I need to answer this photos

Answer:

Step-by-step explanation:

7 + x³ is the sum of 7 and the cube of a number x

Note that using the SAS Postulate. in the above-given triangle, the statement "AC is perpendicular to BD." is sufficient to complete the proof.

Given a ΔABD.  C is the midpoint of BD.

To prove that the two Δs are congruent we have to use the SAS Postulate.

Here consider two Δs ABC and ADC

Statement                        Reason

1) BC = CD                       D is the midpoint of BD

2) AC = AC                       Reflexive property

Since we have two sides of congruence we must have included angle congruence

i.e. Angle ACB = Angle ACD

Since this information is given, then this completes the SAS congruence for the two triangles ABC and ADC

Therefore, the statement AC is perpendicular to BD is sufficient to complete the proof.

Learn mroe about SAS Postulate;
https://brainly.com/question/1593616
#SPJ1

The area on the graph that is not shaded is the region of feasibility. The shape is a triangle and the vertices of the feasible region are: (5,1.5), (.75,.75), (1.5,.5)

The system of inequalities below, We need to determine the shape of the feasible region and find the vertices of the feasible region

x+y<=2

3x+y>=3

x+3y>=3

x>=0

y>=0

Now, we would graph with the following inequalities

x+y>=2

3x+y<=3

x+3y<=3

x<=0

y<=0

Therefore, the area on the graph that is not shaded is the region of feasibility and the shape is a triangle, the vertices of the feasible region are: (5,1.5) (0.75, 0.75), (1.5,.5).

To learn more about linear equation refer here

https://brainly.com/question/14323743

#SPJ4

Answer:

Divide both sides by the numeric factor on the left side, then solve.

Exact Form:

x=−7/2

Decimal Form:

x=−3.5

Mixed Number Form:

x=−3 1/2

Step-by-step explanation:

Answer:

- 3.5

Step-by-step explanation:

hope this helps :)

Answer:

A) P(Betty is first in line and mary is last) = P(B₁) + P(Mₙ) - (P(B₁) × P(Mₙ/B₁))

B) The method used is Relative frequency approach.

Step-by-step explanation:

From the question, we are told a sample of n kids line up for recess.

Now, the order in which they line up is random with each ordering being equally likely. Thus, this means that the probability of each kid to take a position is n(total of kids/positions).

Since we are being asked about 3 kids from the class, let's assign a letter to each kid:

J: John

B: Betty

M: Mary

A) Now, we want to find the probability that Betty is first in line or Mary is last in line.

In this case, the events are not mutually exclusive, since it's possible that "Betty is first but Mary is not last" or "Mary is last but Betty is not first" or "Betty is the first in line and Mary is last". Thus, there is an intersection between them and the probability is symbolized as;

P(B₁ ∪ Mₙ) = P(B₁) + P (Mₙ) - P(B₁ ∩ Mₙ) = P(B₁) + P(Mₙ) - (P(B₁) × P(Mₙ/B₁))

Where;

The suffix 1 refers to the first position while the suffix n refers to the last position.

Also, P(B₁ ∩ Mₙ) = P(B₁) × P(Mₙ/B₁)

This is because the events "Betty" and "Mary" are not independent since every time a kid takes his place the probability of the next one is affected.

B) The method used is Relative frequency approach.

In this method, the probabilities are usually assigned on the basis of experimentation or historical data.

For example, If A is an event we are considering, and we assume that we have performed the same experiment n times so that n is the number of times A could have occurred.

Also, let n_A be the number of times that A did occur.

Now, the relative frequency would be written as (n_A)/n.

Thus, in this method, we will define P(A) as:

P(A) = lim:n→∞[(n_A)/n]

Given this pair of probabilities, the probability that Mary is the first is  n(A) = n-1!, while the probability that Betty is last is  n(A) = n-1!

There are n! ways of making this arrangement

We have probability of A: Betty is the first person in this line

Probability of B: Mary is the last person

A U B = p(A) + p(B) - p(A ∩ B)

n(A) = n-1 that is given that Betty is the first person on the line.

then n(A) = n-1!

As the last person on the line P(B) = n-1!

Probability of (A∩B) =( n-2)!  this has Mary as the first and Betty as the last person.

Remaining students that would have to be on this line are n-2

Prob(A∪B) = n(A ∪ B)/n!

= 2(n-2)/n(n-1)

This is the theory that talks about the chances or the likelihood of an event occuring in a pair of events.

Read more on probability here: https://brainly.com/question/24756209

Answer:

Quarters- 236       Dimes- 1

Step-by-step explanation:

12 quartes= $3.00

12 quarters= $3.00

12 quarters= $3.00

40 quarters= $10.00

160 quarters= $40.00

$3.00+$3.00+$3.00= $9.00

$10.00+$40.00= $50.00

$50+$9= $59+10 cents= $59.10

12+12+12+40+160= 236 quarters

1 dime= 10 cents

Answer:

The mean of this weeks temp

The mean of last weeks temp

The range of this weeks temp

Step-by-step explanation:

:)

Answer:

1. The mean of this week's temp

2. The mean of last week's temp

3. The range of this week's temp

Step-by-step explanation:

that is what i think

Answer: The probability that both events A and B will occur is 5/18 or 0.28.

Step-by-step explanation:

To determine the probability that both events A and B will occur, we need to calculate the probabilities of each event separately and then multiply them together.

Event A: The probability of rolling a 5 or 6 on the first die is 2 out of 6 (since there are two favorable outcomes out of six possible outcomes on a fair six-sided die). Therefore, the probability of event A is 2/6 or 1/3.

Event B: The probability of not rolling a 1 on the second die is 5 out of 6 (since there are five favorable outcomes out of six possible outcomes). Therefore, the probability of event B is 5/6.

To find the probability that both events A and B occur, we multiply the probabilities:

Probability(A and B) = Probability(A) * Probability(B) = (1/3) * (5/6) = 5/18.

Answer:

≤ − 8

Step-by-step explanation:

-1 ≤ \(\frac{x}{-4}\) -3

4 ×(-1) ≤ 4 × \(\frac{x}{-4}\) -4×3

-4 × (-1) ≤ -x - 4×3

-4 ≤ -x - 12

x ≤ -12 + 4

x ≤ -8

Answer:

It might be 96. I don't know

Step-by-step explanation:

the system has not solution

given

Step 1

a) mutiply equation (2) by 8 to Make the x coefficients of one variable opposites.

b) now, add the result to equation(1)

when we get a indetermination it means the system has not solution , so the answer is

the system has not solution

I hope this helps you

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

By the Pythagorean Theorem we know

(r+7)^2=r^2+14^2

r^2+14r+49=r^2+196

14r+49=196

14r=147

r=10.5

To solve this question, we will proceed thus:

Simplifying further: (Applying log rules)

Answer = Option C.

Answer:

4X+2

Step-by-step explanation:

Since there is a negative in front of (4X+5), this will change the signs of both 4x and +5 to (-4X) and (-5) respectively.

This will make the equation look like as follows:-

8X +7 - 4X- 5

Thus on solving we get:-

8X- 4X +7 - 5

= 4X +2

There is a three-digit number.The second digit is four times as big as the third digit,while the first digit is three less than the second digit. What is the number?

=Answer: 141

Answer: 50 miles

Step-by-step explanation:

75 miles in one and half hours.

That's 25 miles per half hour

So, in 1 hour, he will drive 50 miles

The approximate surface area of the package is approximately 245.05 square inches.

The best model for the package is a cylinder.

To calculate the approximate surface area of the package, we need to find the lateral surface area of the cylinder and the area of the circular base.

The lateral surface area of a cylinder can be calculated using the formula:

Lateral Surface Area = 2πrh

where r is the radius of the base and h is the height.

The area of the circular base can be calculated using the formula:

Area of Base = \(πr^2\)

Given that the diameter of the bottom is 9 inches, the radius (r) would be half of that, which is 4.5 inches.

Using the given height of 13 inches, we can now calculate the surface area:

Lateral Surface Area = 2πrh = 2π(4.5)(13) ≈ 117.81 square inches

Area of Base = \(πr^2 = π(4.5)^2 ≈ 63.62\) square inches

To find the total surface area, we add the lateral surface area and the area of the base:

Total Surface Area = Lateral Surface Area + 2 × Area of Base = 117.81 + (2 × 63.62) ≈ 245.05 square inches

Therefore, the approximate surface area of the package is approximately 245.05 square inches.

For such more questions on Candy Package: Shape & Area

https://brainly.com/question/27601000

#SPJ8

Answer:

Step-by-step explanation:

Oh yaaa

usuejeieuIeie

ueheueu

Answer:

Brainly

Step-by-step explanation:

Answer:

-85

Step-by-step explanation:

One identity that we can write here is:

cos²(θ/2) = - sin²(θ/2) + 1

Here we want to find something that is equal to cos²(θ/2) for every value of theta, that will be an identity.

The general identity for trigonometric functions is:

cos²(θ) + sin²(θ) = 1

So we can rewrite this as:

cos²(θ) = - sin²(θ) + 1

If instead of theta, the argument is theta over two, we could rewrite this as:

cos²(θ/2) = - sin²(θ/2) + 1

That is the identity.

Learn more about trigonometric functions at

https://brainly.com/question/8120556

#SPJ1

Answer:

depends on how you peel it

Step-by-step explanation:

if you peel it with one quick peel, you will have only one

if you do it with 2, you will have 2 peels an so on

The amount of peels will be greater in the bigger potato as compared to the smaller potato.

The four basic operations of arithmetic can be used to add, subtract, multiply, or divide two or even more quantities.

They cover topics like the study of integers and the order of operations, which are relevant to all other areas of mathematics including algebra, data processing, and geometry.

As per the given data in the question,

There are two potatoes, a small one and a bigger one.

If you peel the bigger one, because of the bigger surface area, you will get more peels as compared to the smaller potato because the surface are is small, and you will get less number of peels.

To know more about arithmetic operations:

https://brainly.com/question/13585407

#SPJ2

Answer:

Given that,

It is changed to,

To find the transformation the above graph changed.

First the given function is multiplied by the factor 1/2 to the function of x, it results in shrinking the graph vertically by the factor 1/2.

The graph will shrink vertically by the factor 1/2.

Here, the y intercept of equation (1) is 0

y intercept of equation (2) is 4.

Since the function of x is added by 4, the graph is shifted 4 units up.

The graph will shift 4 units up and will shrink vertically by a factor of 1/2.

Answer is: The graph will shift 4 units up and will shrink vertically by a factor of 1/2.

Answer:

488

Step-by-step explanation:

You divide 28453 by 58.3053278689 and get 488.

The length of the rectangle is calculated to be 9 inches if the length of the rectangle is 3 inches greater than its width

The formula for the perimeter of a rectangle can be given as follows;

perimeter = 2 ( x + y )

Here x represents length and y represents width;

Since the length of a rectangle is 3 Inches more than its width, therefore;

x = y + 3

Since the perimeter of the rectangle is 30 inches, therefore;

2 ( x + y ) = 30

Simplifying by dividing both sides by 2 as follows;

2 ( x + y ) / 2 = 30 / 2

x + y = 15

As x = y + 3; substituting this value in x + y = 15 as follows;

y + 3 + y = 15

Rearranging;

y + y + 3 = 15

2y + 3 = 15

2y = 15 - 3

2y = 12

y = 12 / 2

y = 6

As x = y + 3

x = 6 + 3

x = 9 inches

Hence the width of this rectangle is 6 inches and the length is 9 inches.

To learn more about length; click here:

https://brainly.com/question/26759758

#SPJ4

Answer:kwbebrhdjejhehe

Step-by-step explanation:

Answer: 1/4≤x

Step-by-step explanation:

-5/(2x-3)≤2

Multiply by (2x-3)

-5≤4x-6

Add 6

1≤4x

1/4≤x

Hope it helps <3

Answer:

\(x \geq 1/4\)

Step-by-step explanation:

=> \(\frac{-5}{2x-3} \leq 2\)

Multiplying both sides by (2x-3)

=> \(-5 \leq 2(2x-3)\)

=> \(-5 \leq 4x-6\)

Adding 6 to both sides

=> \(-5+6 \leq 4x\)

=> \(4x\geq 1\)

Dividing both sides by 4

=> \(x \geq 1/4\)

Step-by-step explanation:

The 3.5% saltwater means that for every 100 gallons of saltwater, there are 3.5 gallons of salt and 96.5 gallons of purified water. Therefore, to find the number of gallons of salt mix that Julian should add to 30 gallons of purified water, we can set up the following proportion:

3.5 gallons of salt / 100 gallons of saltwater = x gallons of salt / 30 gallons of purified water

Simplifying this proportion, we get:

x = (3.5 gallons / 100 gallons) * 30 gallons / 96.5 gallons

x = 0.01078 gallons of salt mix

To find the number of pints of aquarium salt mix that Julian should use, we can set up another proportion:

1 gallon of salt mix / 8 pints of salt mix = 0.01078 gallons of salt mix / y pints of salt mix

Simplifying this proportion, we get:

y = (0.01078 gallons of salt mix / 1 gallon of salt mix) * (8 pints of salt mix / 1 gallon of salt mix)

y = 0.0862 pints of aquarium salt mix

Rounding to the nearest tenth, Julian should use approximately 0.1 pints of aquarium salt mix for 30 gallons of purified water.

Answer:

x = 0 , x = 2

Step-by-step explanation:

3x² = 6x ( subtract 6x from both sides )

3x² - 6x = 0 ← factor out 3x from each term

3x(x - 2) = 0

equate each factor to zero and solve for x

3x = 0 ⇒ x = 0

x - 2 = 0 ( add 2 to both sides )

x = 2

solutions are x = 0 , x = 2

Answer:

1/8

Step-by-step explanation:

First make the denominator equal

6*4= 24

4*4= 24

6*3= 18

4*1= 4

so now the the equation is

4/24 * 18/24

now multiply

4/24 * 18/24 = 3/24

simplify

3/24 = 1/8