out of 139 7th graders, 86 voted math as their favorite subject. what percent is this?

Vanessa can buy a maximum of x oranges, where x is the number of oranges she can buy at the store. We can represent this mathematically as an inequality by letting x represent the number of oranges she can buy and setting it equal to the total amount of money she has minus the cost of the eggs divided by the cost of each orange:

x ≤ ($20 - $3) / $0.50

This inequality tells us that Vanessa can buy at most x oranges as long as the total cost of the oranges (x * $0.50) is less than or equal to the amount of money she has remaining after buying the eggs ($20 - $3).

In other words, Vanessa can buy at most x oranges as long as the total cost of the oranges is less than or equal to $17.50. This means she can buy at most 35 oranges, since 35 * $0.50 = $17.50. Therefore, the inequality that represents the maximum number of oranges Vanessa can buy is:

x ≤ 35.

The function  y = x⁴ + 7 is decreasing on (-∞ , 0) and increasing on (0 , ∞) .

In the question ,

it is given that ,

the function is y = x⁴ + 7 ,

we have to show that function y  is decreasing on (-∞ , 0) and increasing on (0 , ∞) .

differentiating the function y = x⁴ + 7 , with respect to x ,

we get ,

y'(x) = d/dx(x⁴ + 7) = 4x³

putting y'(x) = 0 , then 4x³ = 0 ;

x³ = 0 that means , x = 0 .

thus , the critical number is ⇒ x = 0 .

y'(-1) = 4(-1)³ = -4   So , it is decreasing

y'(1) = 4(1)³ = 4    So , it is increasing .

Therefore , the function y is decreasing in (-∞ , 0) and increasing in (0 , ∞) .

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The magnitude of vector is 8.24 and angle is 75.9638.

What is vector?

A vector could be a amount that not solely describes the magnitude however additionally describes the movement of an object or the position of an object with reference to another purpose or object.

Main body:

we know that the magnitude of vector is found out by,

| u | = [tex]\sqrt{i^{2}+j^{2} }[/tex]

so here , u = 2i + 8j

|u| = [tex]\sqrt{2^{2} +8^{2} }[/tex]

|u| = [tex]\sqrt{68}[/tex]

|u| = 8.24

now to find the direction , angle

tan∅ = j/k

tan∅ = 8/2

∅ = tan⁻¹ (4)

∅ = 75.9638°

Hence , direction angle of the following vector is ∅ = 75.9638°

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All the possible values for the number 'x' will be less than or equal to 1,350.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The remainder of a number and 5 in addition to 25 is something like 45.

Let the number be 'x'. Then the inequality is given as,

x / (5 + 25) ≤ 45

x / 30 ≤ 45

x ≤ 1,350

All the possible values for the number 'x' will be less than or equal to 1,350.

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Proof:

Let's start of by solving for the length of AC, which is just the sum of lengths AB and BC, which is 10 + 3 = 13 units.

Because of our second given, AC ≅ EG, we know that EG is also 13 units in length. Also, from our first given, BC ≅ EF, we know that EF is 3 units.

We also know that the length of EG is the sum of lengths EF and FG so we can write the equation

EG = EF + FG

13 = 3 + FG

FG = 10 meaning FG is 10 units

Answer: 3 11/15  please mark brainliest If I helped you.

the question is kayar and 12 by 5 miles on Monday and 21 by three miles on Tuesday what is the total distance in miles kayuren during those two days first phone on Monday how much run that was 12 by 5 miles on Tuesday Shirin to 1 by 3 minus now this whole part and fractional part are written separately so this can be converted into a mixed fraction like when a number is of the form of p by see that is one whole number and fraction then it is written as a + b by c so we can write Monday that was 12 by 5 miles that is

12 by 1 + 2 by 5 that will be 5 will be LCM of 5 + 2 will be 7 by 5 MI and Tuesday it will be 21 by 3 that is 2 + 1 by 3 3 will be the LCM of 3 and 22 will be 6 plus one that is 7 by 3 minus in question is asked that what was the total distance kayar and thus during today's so Monday plus Tuesday will be the total total 27 by 5 + 7 by 3 that will be equal to LCM will be 15 this will be X 307 into 3 + 7 and 25 that

is 21 + 45 upon 15 that will be equal to 56 upon 15 Now since we have to give answer in mixed fraction in whole number and fraction this a bi bi can be divided into a whole number and fraction part when divided by be the remainder is remainder is written here b is written here and question is written here so 56 by 15 can be written as 15 and 23 is 45 three years question remainder will be 11:00 that is 56 - 45 and below will be the denominator will be 15 so this is our answer and the correct

Superman pro

Step-by-step explanation:

Superman pro

Answer:

You did not provide the choices, but the first step to find the result of the operation using standard algorithm is to set up a long division

Step-by-step explanation:

1/2×2 sin 5x. cosx

=1/2×sin (5x+x)+cos (5x-x)

=1/2 sin 6x +sin 4x

Answer:

Step-by-step explanation:

its 2

Answer:

DF is congruent to FG

Step-by-step explanation:

segment subractive property means to subract a part of a segment from another if they are equal. If we do this in this situation, we will see that DF is congruent to FG

       Statement                                        Reason                          

(a) Determinant: det(A) = -18; Rank: rank(A) = 4. The determinant and rank are non-zero, so the vectors are linearly independent.(b) Determinant: det(A) = 0; Rank: rank(A) = 3. The determinant is zero and the rank is less than 4, so the vectors are linearly dependent.

(a)

2 4 5 -3

-3 2 7 0

9 2 4 6

3 2 -6 5

Det = -18

(b)

1 -1 3 2

-1 2 4 -5

3 -4 2 9

7 2 1 3

Det = 0

The determinant and rank of the vectors can be used to determine whether or not they are linearly dependent. If the determinant is non-zero and the rank is equal to the number of vectors, then the vectors are linearly independent. If the determinant is zero and the rank is less than the number of vectors, then the vectors are linearly dependent.

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Answer:

Step-by-step explanation:

You could use 1 3/4's of a cup and 8 1/4's of a cup.

1 of the 3/4 cups is 3/4 so that covers the 3/4 of the cups of how much flour is needed.

8 of the 1/4 cups is 8/4 which is equal to 2 so that covers the rest of the flour needed.

And 2 + 3/4 is 2 3/4 which is the amount of flour that is needed.

OR

You could use 3 3/4's of a cup and 2 1/4's of a cup.

3/4 + 1/4=4/4

3/4+1/4=4/4

4/4 + 4/4 is the same thing as 1+1 which is 2, so that covers the 2 cups of the flour that is needed, and then you add another 3/4, now you have

2 3/4, which is the amount of flour needed.

(I think that there might be other ways/combinations but I only included 2..)

The statement "let c and d be disjoint compact subspaces of the Hausdorff space x and then there exist disjoint open sets u and v containing c and d, respectively." is proved.

Here we have given the let A and B be disjoint compact subspaces of the Hausdorff space X.

And we have to prove the statement.

According to the given question, let us consider that x be an arbitrary coordinate of A and here the points of x isn't in Y because A and B are disjoint.

Then according to Lemma 26.4 disjoint open sets Ux and Vx such that x Î Ux and Ux contain B.

Here the collection {Ux} is a covering of A by sets open in X.

And the finite collection of them {U1, ..,Un} covers A because A is compact.

Here the open set U = U1 U....U Un contains A and it is disjoint from

V = V1 I.....I Vn that contains B because it's the finite intersection of the corresponding open sets containing.

Therefore, here there exists disjoint open sets U and V containing A and B, respectively.

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The fraction of the package of raisins Ashley left with will be equal to 7/18.

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 information in the question,

Amount of raisins used for fruit cake = 1/2

Amount of raisins used for muffins = 1/9

Then, the amount of raisins left will be,

1 - (1/2 + 1/9)

= [18 - (9 + 2)]/18

= (18 - 11)/18

= 7/18

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By using p-value hypothesis test,we find that the mean delivery time actually exceeds 34 minutes.

It is a number calculated from a statistical test that describes how you are found a particular set of observation ,if the null hypothesis were true.P-values are used in hypothesis testing to help to decide whether to reject the null hypothesis .The lower the p-value the greater the statistical significance of observation differences.

The null hypothesis states that as the assumption that there is no change , no difference and no relationship between two variables.The alternate hypothesis stated that there is a change, difference and relationship between two variables or group.

let we use p-value test

Let u=average time spend on deliveries

so,null hypothesis H0;u[tex]\leq[/tex]34 minutes

    alternate hypothesis HA; u >34

Now the decision rule based on the p-value to whether null hypothesis should be accepted or rejected is given by;

.If hypothesis p-value of test statistical is less than the level of significance,then we will our null hypothesis.

.If the p-value of test statistical is more than the level of significance.then we will not reject our null hypothesis.

Here, we assume that the level of significance is 5%.

Since the p-value test statistics is less than the level of significance as 0.029<0.05.

so,we have evidence to reject our null hypothesis.

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The value of the amount will be $721.40.

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

Given that;

500 dollar deposit for 20 years with a interest rate of 2%.

Now,

We know that;

The formula for amount is,

⇒ [tex]A = P (1 + r)^n^t[/tex]

Where, A is total amount, P is principle amount, r is interest rate.

Here, We have;

P = $500

t = 20 years

r = 2%

Substitute all the values, we get;

⇒  [tex]A = P (1 + r)^n^t[/tex]

⇒ [tex]A = 500 (1 + 0.02)^2^0[/tex]

⇒ A = 500 × 1.02²⁰

⇒ A = 500 × 1.44

⇒ A = $721.40

Thus, The value of the amount = $721.40

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Answer:

The area of the square is larger than the area of the rectangular field.

   The probability that the sample mean will be within ±5 of the population mean is 0.6826

If the population is normally distributed, the sample means will be normally distributed even with smaller samples. [This is known as the Central Limit Theorem, which states that when a large number of random samples are drawn from a population, the means of these samples will be normally distributed.]

Z=X-μ/σ

Given here, σ = 50 , μ =200 , σₓ = 5 , n = 100 ,                                                                      

                     z = 205-200/5    z = 195-200/5

we get z= ±1

From the z table, we get P( z= -1)  = 0.1587

From the z table we get P( z= 1)  = 0.8413

Thus the final answer is = 0.8413- 0.1587

                                        =  0.6826

Hence,  the probability that the sample mean will be within ±5 of the population mean is  0.6826

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The representation table given indicates that the function is linear, as the difference between consecutive y-values (9-8, 8-7, and 7-6) is constant. Therefore, we can represent the function with a linear equation of the form y = mx + b, where m is the slope and b is the y-intercept.

To find the equation of the function, we can use the x- and y-values given in the table to solve for m and b. For example, using the x- and y-values (-3,9) and (-2,8), we can solve the equation 9 = m(-3) + b for m and b:

9 = -3m + b

8 = -2m + b

Subtracting the second equation from the first equation gives us:

1 = -m

So the slope of the function is -1. Substituting this value back into either equation gives us:

9 = -3(-1) + b

9 = 3 + b

6 = b

So the y-intercept of the function is 6. Therefore, the equation of the function is y = -1x + 6.

The other two representations can be solved in the same way to find the equations of those functions.

After reducing the product in the lowest form and changing to mixed fraction , the answer is  [tex]3\frac{3}{4}[/tex]  .

In the question ,

it is given that ,

the two numbers are 2/8 and 15 ,

we have to find the product without using the calculator and express it in lowest form and then convert the improper fraction in to mixed fraction .

So , the product of 2/8 × 15  = 30/8

in lowest form it is 15/4 .

after converting the improper fraction 15/4  in mixed form ,

we get ,

15/4 = [tex]3\frac{3}{4}[/tex].

Therefore , the product of 2/8 × 15 is [tex]3\frac{3}{4}[/tex]  .

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Answer: 8/3

Step-by-step explanation:

In this equation, x=-2

so

f(-2)=-1/6 (1/4)^(-2)

(1/4)^(-2)=4^2=16

f(-2)=-1/6 16

I am going to assume that it's (1/6)*(1/4)^x meaning:

f(-2)=16/6

=8/3

I hope I assumed correctly.

Answer:

---------------------------

Given function:

Find f(-2), by plugging in the value of x:

To determine the maximum or minimum value of a given function, Lagrange multipliers are used.

What is langrange multipliers?

Let's set up everything now. We want to optimize (i.e., find the minimum and maximum value of) a function, f, under the condition that g (x, y, and z) = k. (x, y, and z). Once more, the equation that describes the boundary of a region may or may not be the constraint. Although the process is actually quite simple, there are times when the workload seems quite overwhelming.

Solve the following system of equations.

∇f(x,y,z) = λ

∇g(x,y,z)

g(x,y,z)= k

If there are minimum and maximum values, enter them into f(x,y,z) along with all of the solutions (x,y,z) from the first step.

∇ g ≠ → 0 at the point.

The constant, λ, is called the Lagrange Multiplier.

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Answer:

y < 13x – 15

Step-by-step explanation:

13x – y < 15

–y < –13x +15

divide both sides by (–)

–(–y) < –(–13)x –(15)

y < 13x – 15

This hypothesis is a false positive.

What is a false positive result?

When a scientist concludes something is real when it is actually wrong, this is known as a false positive (also called a type I error). A "false alarm" is a false positive. Saying something is false when it is truly true is known as a false negative (also called a type II error). A false negative indicates that something was missed or that something that was present was not discovered.

A false positive is getting a positive result that should be negative (this is also known as a “type I error”). A false negative is getting a negative result that should be positive (this is also known as a “type II error”).

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The required next term at the end of the sequence is 43.

Arithmetic progression is the series of numbers that have common differences between adjacent values are equal.

here,
1, 2, 4, 7, 12, 19, 30,
As
the sequence is the prime addition of the number, as.
1,
1 + 1 = 2
2 + 2 = 4,

4 + 3 = 7
7 +  5 = 12
12 + 7 = 19
19 + 11 = 30
30 + 13 = 43

Thus, At the end of the sequence, the required next term is 43.

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Answer:

Slope of the line, [tex]m_{1} = -\frac{1}{2}[/tex]

Slope of parallel line, same as the slope above

Slope of perpendicular line, [tex]m_{2} = 2[/tex]

Step-by-step explanation:

Parallel line: [tex]m_{1} = m_{2}[/tex]

Perpendicular line: [tex]m_{1} * m_{2} = -1[/tex]

[tex]y = mx +b[/tex]

Where, m = slope

Thus, in the equation provided, the slope is [tex]-\frac{1}{2}[/tex]

Finding the slope of perpendicular line:

[tex]m_{1} * m_{2} = -1\\m_{2} = \frac{-1}{m_{1}}\\m_{2} = -1 * -2\\m_{2} = 2[/tex]

Therefore ,the water level is rising  by 0.1388 ft/min when h is 1.2 feet deep and  the water is being pumped at rate of 0.8625 cubic feet per min when water is rising at 3/8 inch/min

A three-dimensional space's occupied volume is measured. It is typically quantified using a variety of imperial or US-standard units as well as SI-derived units. The concept of length and volume are related.

Here,

Given: A trough has a 12 foot length and a 3 foot top width. Three-foot-high isosceles triangles make up its ends. 12f 3 ft 31

So the first case:

using this we find the rate of Volume,

So,

=> dV/dt = length * height *dh/dt

=> dV/dt = 12 * 1.2 *dh/dt

=> 2 = 12*1.2* dh/dt

=> 2 = 14.4 * dh/dt

=>dh/dt = 2/14.4

=>dh/dt = 0.1388 ft/min

Therefore ,the water level is rising  by 0.1388 ft/min when h is 1.2 feet deep .

Second case:

Since water level is rising by 3/8 inch per min =0.03125 feet/min

=> dV/dt = length * height *dh/dt

=> dV/dt = 12 * 2.3 *0.03125

=>dV/dt = 0.8625 cubic feet per min

Therefore , the water is being pumped at rate of 0.8625 cubic feet per min.

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Continental glacier ice flows from the region where it is thickest toward the edges where it is thinner. In the central thickest parts, the ice flows almost vertically down toward the base, while at the edges of the glacier, it flows horizontally out toward the margins.

Glaciers generally advanced from the direction where the contour lines on the landforms are closest together (steep slope) toward the direction where the contour lines on the landforms are farther apart (gentle slope).

A continental glacier originating in far Northern Canada began to move South towards the Northeastern United States. The ice sheet crept slowly forward, scraping off the loose rock materials and gouging the bedrock beneath the ice as it advanced.

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