help please! super urgent. simple math problem!! will mark brainliest

Answer:

I'm not sure how to answer is but i think its called   < CDE  or  < EDC  or it is an acute angle.

Step-by-step explanation:

The two ways of naming the given angle are:

There are two general ways of naming an angle.

First, we just call the angle as the vertex. For example, in this case the vertex is D, then the name of the angle would be D or ∠D, where the symbol ∠ is used for angles.

Now, there are another way of naming an angle, and it depends on the arms of the angle (in cases where a point is a common vertex for many angles, we need to specify the arms).

So the name would be:

EDC or ∠EDC

Where the vertex goes always in the middle.

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Answer:

Step-by-step explanation:

Both x and y have the exponent 1, and therefore this is a LINEAR equation.  NO, it is not an exponential function.

Final answer:

The function y=7x-3 is not an exponential function; it is a linear function with a slope of 7 and a y-intercept of -3.

Explanation:

The function given is y=7x-3. To determine whether this function is exponential, we should look at the form of the function. An exponential function has the form y = abˣ, where a is a constant, b is the base of the exponential (which is a positive real number other than 1), and x is the exponent. The given function, however, is a linear function because it can be rewritten in the form y = mx + b, where m is the slope and b is the y-intercept. In this case, m (the slope) is 7, and b (the y-intercept) is -3. Therefore, y=7x-3 is not an exponential function; it is linear.

Answer:

The option which is an exception is;

c) The sample sizes are large

Step-by-step explanation:

Here the requirement to perform a two sample t procedure are as follows;

1. The two samples have equal variance, hence the variance should be known

2. The samples for which the two sample t procedure is performed must be independent

3. The data are in alignment with the normal distribution probability

4. The samples are random samples taken from the different respective population

Since the sample size is known, we do not assume that the sample size are large.

Therefore options a), b) and d) are all correct except option c).

Answer:  

Last one: 5x - 3√y + 1

Step-by-step explanation:

8x + √1 - √9y - √9x^2

8x + 1 - 3√y - 3x

5x + 1 - 3√y

5x - 3√y + 1

CAN YOU PLEASE MARK MY ANSWER BRANLIEST

Answer:

The answer to your question is below

Step-by-step explanation:

Data

4 red marbles

3 blue marbles

3 yellow marbles

a) Total number of marbles = 4 + 3 + 3 = 10 marbles

b) Number of red marbles = 4 marbles

c) Number of blue marbles = 3 marbles

d) P(blue) = number of blue marbles/ total number = 3/10

e) P(red) = number of red marbles/total number = 4/10 = 2/5

The square root 75 in  simplest radical form will be [tex]5\sqrt{3}[/tex].

We have to Express the square root 75 in  simplest radical form.

We know that An expression that uses a root, such as a square root, cube root is known as a radical notation.

First find the factors of 75.

The factors of 75 will be,

[tex]3\times5\times5[/tex].

Now,

[tex]\sqrt{75} =\sqrt{3\times5\times5}[/tex]

since 5 is in pair under the root so it will come out from the root,

[tex]\sqrt{75}=5\sqrt{3}[/tex]

Thus the simplified radical form is [tex]5\sqrt{3}[/tex].

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The question is incomplete! Complete question along with answer and step by step explanation is provided below.

Question:

Lydia is at a coffee shop and knows  she can spend no more than $65

before tax. She sees this price list in  the coffee shop.

Dark Roast Coffee    $7.50

Pumpkin Spice Coffee   $10.50

Breakfast Tea   $23.50

if Lydia buys 1/2 pound of the Breakfast Tea and 2 pounds of the Dark Roast coffee, how many 1- pound bags of Pumpkin Spice coffee can she buy?

Given Information:

Shopping Budge = $65

Price of   Dark Roast Coffee = $7.50

Price of Pumpkin Spice Coffee  = $10.50

Price of  Breakfast Tea  = $23.50

Amount of Breakfast Tea required = 1/2 pound

Amount of Dark Roast coffee required = 2 pounds

Required Information:

How many 1-pound  Pumpkin Spice Coffee can she buy = ?

Answer:

n = 3 bags of 1-pound Pumpkin Spice Coffee

Step-by-step explanation:

We are given that the amount of Breakfast Tea required is 1/2 pound so the cost of Breakfast Tea is

Cost of Breakfast Tea = 1/2*23.50 = $11.75

We are also given that the amount of Dark Roast coffee required is 2 pounds so the cost of Dark Roast coffee is

Cost of Dark Roast coffee = 2*7.50

Cost of Dark Roast coffee = $15

We know that total Lydia's total budget is $65

11.75 + 15 + 10.50x = 65

Where x represents the amount of Pumpkin Spice coffee required

10.50x = 65 - 11.75 - 15

10.50x = 38.75

x = 3.64 pounds

That means Lydia can buy 3.64 pounds of Pumpkin Spice coffee.

Now assuming that the Pumpkin Spice coffee is sold only in 1-pound bags then the required number of bags that Lydia can buy is

n = 3.64 pound/1-pound

n = 3.64

Since bags cannot be in fraction so

n = 3 bags

Note: we can not round off to 4 bags since that would surpass the given budged.

Answer:

74°

Step-by-step explanation:

All interior angles of a triangle add up to 180°, so to find the measure of the third angle here, we can use this:

180 - (90+16)

180 - 106

= 74°

Hope this helps!

Answer:

It is 4 feet below the tree limb now

step by step

it starts at -23 or 23 below and rises 19 or adds 19 to the -23

so -23+19=-4. or 4 feet below the tree limb

Final answer:

After floating up 19 feet from its initial position of 23 feet below the tree limb, the balloon is 4 feet below the limb.

Explanation:

The student's question pertains to finding out the position of a balloon relative to a tree limb if the balloon starts 23 feet below the tree limb and then floats up 19 feet. We begin by acknowledging that the balloon's initial position is -23 feet (since it is below the limb, we consider this as negative). Upon floating up 19 feet, we perform the arithmetic operation of adding +19 feet to the initial position.

The calculation is as follows: -23 feet + 19 feet = -4 feet.

Therefore, the balloon's final position relative to the tree limb is 4 feet below it, since the result is still negative, indicating that the balloon did not reach or surpass the height of the limb.

Answer: (a) 12.44 - 3.11h = 0

(b) 4in²

Step-by-step explanation:

Area of a triangle = (1/2)bh, where b is the base and h is the height.

Now from the question, Area = 6.22in² and the base is 3.11inches.

Therefore, the equation that relates the area to the height and the base wiil be

Area = (3.11)h/2

6.22 x 2 = 3.11 x h

12.44 = 3.11h

12.44 - 3.11h = 0

(b) to find the value of h from the equation, make h the subject of the formula by solving for h

12.44 = 3.11h

h = 12.44/3.11

= 4in²

In a perfectly competitive market, Andy will produce two basketballs in the short run, as this is the quantity at which the marginal cost equals the equilibrium price of $2.50.

In a perfectly competitive market, a firm like Andy's basketball business should continue to produce and sell its product as long as the marginal cost (MC) of producing an additional unit is less than or equal to the market price, and stop at the point where MC equals the market price. Given that the equilibrium price of basketballs is $2.50, and looking at the provided information where various costs are outlined, we can determine how many basketballs Andy should produce.

Andy should look at the marginal cost for each output level and compare it to the equilibrium price. He will produce up to the point where marginal cost equals the equilibrium price. The table shows the last unit he should produce at a marginal cost of $2.50 is the second basketball. Producing the third basketball would have a marginal cost of $5.00, which is higher than the equilibrium price, indicating that producing the third basketball would lead to a loss. Therefore, in the short run, Andy will produce two basketballs per day.

Answer:

Mass is a measure of the amount of matter in an object. Mass is usually measured in grams (g) or kilograms (kg). ... An object's mass is constant in all circumstances; contrast this with its weight, a force that depends on gravity. Your mass on the earth and the moon are identical.

Answer:

Step-by-step explanation:

The ratio of 6

11

compares money spent on eggs to money spent on cereal. This is a part-to-part comparison, not a part-to-whole comparison.

Answer:

The mean, μ is 2.5063 and

The standard deviation, σ = 2.0499 × 10⁻²

Step-by-step explanation:

Here we have

[tex]z = \frac{x- \mu}{\sigma}[/tex]

[tex]z \sigma ={x- \mu}{}[/tex] and

10% have length < 2.48 in while

5% have length > 2.54 in

and

From the z score table

Critical z at 10% to the left = -1.282

Critical z at 5% to the right = 1.645

Therefore, the equations become

-1.282σ = 2.48 - μ → μ -1.282σ = 2.48

1.645σ = 2.54 - μ → μ + 1.645σ = 2.54

Solving the above equations gives

The mean, μ = 2.5063 and

The standard deviation, σ = 2.0499 × 10⁻².

Final answer:

Using the Z-score method and the percentages provided, two equations are set up and solved simultaneously to determine the mean and standard deviation of the lengths of the nails.

Explanation:

Given the information that 10% of the nails produced are shorter than 2.48 inches and that 5% are longer than 2.54 inches, and assuming the lengths are normally distributed, we can determine the mean (μ) and standard deviation (σ) of the lengths of the nails. We can use the Z-score formula which is (X - μ) / σ, where X is the value of the length, μ is the mean, and σ is the standard deviation.

Here, we have two Z-scores corresponding to the given percentages. For 10%, the Z-score is approximately -1.28, and for 5%, the Z-score is approximately 1.645. Now, setting up two equations,

(2.48 - μ) / σ = -1.28

(2.54 - μ) / σ = 1.645
we have a system of equations with two unknowns. Solving these equations simultaneously gives us the values for the mean and standard deviation of nail lengths.

To solve the system, multiply the first equation by σ to get μ = σ * -1.28 + 2.48 and the second equation by σ to get μ = σ * 1.645 + 2.54. By setting these two equations for μ equal to each other, you can solve for σ and afterwards find μ.

To solve the given system of equations:

1. (2.48 - μ) / σ = -1.28

2. (2.54 - μ) / σ = 1.645

We can use the method of substitution or elimination. Let's use the substitution method.

From equation 1, we can isolate  μ :

(2.48 - μ) / σ = -1.28

2.48 - μ = -1.28σ

μ = 2.48 + 1.28σ

Now, we substitute this expression for μ into equation 2:

(2.54 - (2.48 + 1.28σ)) / σ = 1.645

(2.54 - 2.48 - 1.28σ) / σ = 1.645

(0.06 - 1.28σ) / σ = 1.645

0.06 - 1.28σ = 1.645σ

0.06 = 1.645σ + 1.28σ

0.06 = 2.925σ

Now, we solve for  σ :

σ = [tex]\frac{0.06}{2.925}[/tex]

σ ≈ 0.0205

Now that we have found the value of \( σ \), we can substitute it back into the expression we found for \( μ \) to find its value:

μ = 2.48 + 1.28σ

μ = 2.48 + 1.28(0.0205)

μ ≈ 2.48 + 0.02628

μ ≈ 2.50628

So, the solution is approximately  μ ≈ 2.50628  and  σ ≈ 0.0205 .

The percent discount of the tent is 20%.

A discount reduces the price of an item. After a discount, the price of an item is reduced.

In order to determine the percent discount, the difference in price of the tents have to determined.

$260 - $208 = $52

The percent discount = ($52 / $260) x 100 = 20%

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Answer:

maybe 15 students or 63 students and if not I am sorry of that's wrong

Answer:

a = 3

b = 4

c = 5

Step-by-step explanation:

This is a rhombus. A property of a rhombus is that their diagonals perpendicularly bisect each other. In other words, if the point in the center is A, then HA = MA and EA = OA. So: 3 = a and 4 = b.

Since angle HAO forms a right angle, we can use the Pythagorean Theorem to say that HA^2 + AO^2 = OH^2: 3^2 + 4^2 = 9 + 16 = 25.

OH^2 = 25

OH = 5

Hope this helps!

Answer:

a = 3

b = 4

c = 5

Step-by-step explanation:

Rhombus has all sides equal

c = EH = sqrt(4² + 3²) = 5

Diagonals are Perpendicular bisectors of each other

b = 4

a = 3

Answer:

The deer population in 1920 is 104000

Step-by-step explanation:

Here we have the deer population is given approximately by the following equation;

Population of deer = -0.125·x⁵ + 3.125·x⁴ + 4000

Where x = number of years from 1900

Therefore, in 1920, we have x = 20

Hence, the deer population in 1920 is then

-0.125·20⁵ + 3.125·20⁴ + 4000

Which gives

-400000 + 500000 + 4000 = 104000

The deer population in 1920 is therefore, 104000.

Answer:

P=x/2.2

Step-by-step explanation:

We can create an equation to solve this.

Let the number of pounds be P

Let the number of kilograms be X

Now, we know that for 1 kilogram, there is 2.2 pounds.

Therefore if we have 1 kilogram (X) then we will have 2.2 pounds (P).

X=2.2P

All you have to do now is rearrange the equation to find the number of pounds in x kilograms. To do this divide both sides by 2.

Therefore you will get P=x/2.2

The number of pounds in X kilograms can be obtained by using the proportional relationship, Hence, the number of pounds in X kilograms is 2.2X pounds

Given the Parameters :

Creating the proportional expression thus :

1 kilogram = 2.2 pounds

X kilograms =?

Cross multiply :

Number of pounds = 2.2X

Therefore, there will be 2.2X pounds in 1 kilogram.

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Answer:

x + 2(-4) = 10

x - 8 = 10

x = -18

y = -4

(-18, -4)

Step-by-step explanation:

Answer:

x + 2(-4) = 10

Step-by-step explanation:

Substituting -4 for y in the second equation results in x + 2(-4) = 10.  This simplifies to x - 8 = 10 and then x = 18.

Please, when the problem statement includes possible answer choices, share them.

The question is not very clear, since the most logical thing is to think that the fraction is with respect to the number of baby teeth, if so:

6/20 and 3/10, these would be the two fractions.

But the literal question is to express the number 6, as a fraction.

We can do it by multiplying and dividing by the same number, for example:

6 * 2/2 = 12/2

6 * 10/10 = 60/10

This would be the two fractions.

Answer:

A=153.938 or 154

Step-by-step explanation:

A= pi r^2

A=pi(7)^2

A=pi(49)

A=153.938 or 154

Answer:

49π or 153.86

Step-by-step explanation:

Hi there,

The formula for area of a cirlcle is A = [tex]\pi[/tex][tex]r^{2}[/tex]

So, to find the area, simply plug in the radius into the equation.

A = π * [tex]7^{2}[/tex]

A = 49π

The area is either 49π or if you use 3.14 for pi, it's 153.86.

Hope this helps!

- Emily

Step-by-step explanation:

Nathan read 2 books in 10 months.

The time taken to complete 1 book = [tex]\frac{10}{2}[/tex] = 5 months

To complete 1 book it takes 5 months.

The rate of reading a book per month = [tex]\frac{1}{5}[/tex] = 20%

Answer:

the answer is 67

Step-by-step explanation:

hope it's helpful

Answer:

$468

Step-by-step explanation:

450 + (450*0.04) = $468

Answer:

18

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

Consecutive means in a row

x = 1st number

x+1 = 2nd number

x+x+1 = 17

Combine like terms

2x+1 = 17

Subtract 1 from each side

2x+1-1=17-1

2x = 16

Divide each side by 2

2x/2 =16/2

x=8

x+1 = 9

The larger number is 9

Answer:

I think it's 3.5

Step-by-step explanation:

Answer:

The answer is 36.

Step-by-step explanation:

   36

    /\

6      6

/\      /\

3 2   3 2

A. 2C(s) + 2H₂(g) + 52.5 kJ → C₂H₄ shows that the enthalpy of formation of C₂H₄ is 52.5 kJ/mol.

Step-by-step explanation:

Enthalpy of formation of C₂H₄ is given as 52.5 kJ/mol.

There are 4 options given and they are:

A. 2C(s) + 2H₂(g) + 52.5 kJ → C₂H₄

B. 2C(s) + 4H(g) + 52.5 kJ → C₂H₄

C. 2C(s) + 2H₂(g) → C₂H₄ + 52.5 kJ

D. 2C(s) + 4H(g) → C₂H₄ + 52.5 kJ

Here the reactants absorb some energy from the surroundings and gives the product and it is an endothermic reaction.

So A and B is taken into account, but in B there are 4 H atoms involved in the reaction. So in the reaction A hydrogen molecules are involved and also energy is absorbed by the reactants.

So option A is the answer.

Answer: 2C(s) + 2H₂(g) + 52.5 kJ → C₂H₄

Given:

The area of the rectangular garden is 18z+24 sq ft.

To find the possible dimensions of the garden.

Formula

The area of the rectangular garden is

[tex]A = lb[/tex]

where,

l be the length of the rectangle

b be the width.

Let us take l and b be the length and width of the given rectangular park respectively.

Now,

According to the problem,

[tex]lb = 18z+24[/tex]

or, [tex]lb = 6(3z+4)[/tex]

We can determine that,

l = 6 and b = 3z+4 or vice versa.

Hence,

The possible length and width of the rectangular garden is 6 and (3z+4) respectively.

Answer: A

Step-by-step explanation:

The expanded form for the series is 0 + 1+ 4 + 9 +3

Arithmetic operations can also be specified by the subtract, divide, and multiply built-in functions.

[tex]_3\\\sum{n^2}+3\\n=0[/tex]

⇒(0)² + (1)² + (2)² + (3)² +3

⇒0 +1+ 4 + 9 +3

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