Need help with this math problem

Answer:

D - 9x^(2)+2x-5

Step-by-step explanation:

The water should fill the aquarium to 1.5 feet

Solution:

Given that the directions for the aquarium say that it should be filled with 9 cubic feet of water.

This means volume of aquarium is 9 cubic feet

Given that aquarium is 2 feet wide and 3 feet long

To find: Height of aquarium

Since a aquarium is in shape of cuboid, we can use the volume of cuboid formula

The volume of cuboid is given as:

volume of cuboid = [tex]l \times w \times h[/tex]

Where "l" is the length

w is the width

"h" is the height

Substituting the values, we get,

[tex]9 = 3 \times 2 \times h\\\\9 = 6 \times h\\\\h = \frac{9}{6} = 1.5[/tex]

Thus the height of aquarium is 1.5 feet

Answer: x=-1

Step-by-step explanation:

the x value of the vertex = -b/2a if the equation is in "ax^2+bx+c" for

you are in luck

x value of the vertex = -4/4 = -1

the line of symmetry is a vertical line, and since it must pass through the vertex

line of symmetry: x=-1

Final answer:

To calculate the total movie-going cost for five friends, multiply the cost of each item by five and sum them up. The total cost is represented by the expression [tex](5 \times\$9) + (5 \times\$3) + (5 \times\$6)[/tex], which simplifies to $90.

Explanation:

The question involves writing an expression to determine the cost for five friends to attend a movie considering the cost of tickets, drinks, and popcorn. To calculate the total cost for the group, we need to know the price per individual item and the quantity consumed. We know that each ticket costs $9, each drink costs $3, and each popcorn costs $6. Since there are five friends, we will multiply each of these costs by five to get the total cost per item for the group.

The expression for the total cost for the movie tickets is [tex]5\ tickets \ \times \$9/ticket[/tex], for drinks it's [tex]5\ drinks\ \times\$3/drink[/tex], and for popcorn, it's [tex]5\ popcorns \times\$6/popcorn[/tex]. To find the overall total, we add these expressions together:

Total Cost = [tex](5 \times\$9) + (5 \times\$3) + (5 \times\$6)[/tex]

The expression simplifies to:

Total Cost = ($45) + ($15) + ($30)

Therefore, the simplified expression for the total cost is:

Total Cost = $90

Using the Pythagorean theorem:

L = √(15^2 - 9^2)

L = √(225 - 81)

L = √144

L = 12

The answer is 12'

Answer:

The correct answer is A. 45.2

Step-by-step explanation:

1. Let's review all the information provided for solving this question:

Number of trees of the sample = 31

Number of trees of the sample with a height between 60 and 65 feet tall height = 3

Number of trees of the sample with a height between 65 and 70 feet tall height = 3

Number of trees of the sample with a height between 70 and 75 feet tall height = 8

Number of trees of the sample with a height between 75 and 80 feet tall height = 10

Number of trees of the sample with a height between 80 and 85 feet tall height = 5

Number of trees of the sample with a height between 85 and 90 feet tall height = 2

2. Let's calculate the percentage of the trees that are less than 75 feet tall:

Percentage of the trees less than 75 feet tall = [(Number of trees of the sample with a height between 60 and 65 feet tall + Number of trees of the sample with a height between 65 and 70 feet tall + Number of trees of the sample with a height between 70 and 75 feet tall)/Number of the trees of the sample] * 100

Replacing with the real values, we have:

Percentage of the trees less than 75 feet tall = [(3 + 3 + 8)/31] * 100

Percentage of the trees less than 75 feet tall = [(14)/31] * 100

Percentage of the trees less than 75 feet tall = 0.451613 * 100

Percentage of the trees less than 75 feet tall = 45.1613% = 45.2% (Rounding to one decimal place)

The correct answer is A. 45.2

Answer:

[tex]\displaystyle -16 < x[/tex]

Step-by-step explanation:

[tex]\displaystyle -4[\frac{x}{-4}] < 4[-4] → x > -16[/tex]

Whenever you divide\multiply by a negative, you reverse the inequality symbol.

** The above answer is written in reverse, which is the exact same result.

≥, ≤ → Solid Circle [●]

>, < → Blank Circle [○]

I am joyous to assist you anytime.

Answer:

[tex]9) \$1236.27\,10)\,\$6451.07\, 11)\,\$10,152.87 \,12)\,\$907.95 \,13)\,\$4957.69[/tex]

Step-by-step explanation:

9) Since Alicia Martin's savings earns 6% quarterly for two quarters then:

[tex]A=P(1+\frac{r}{n})^{nt}[/tex] ⇒ Amount (A), Principle (P), rate (r) in decimal form, number of compoundings (n) a year and t, in year or its fractions.

[tex]A=P(1+\frac{r}{n})^{nt}\Rightarrow A=1200(1+\frac{0.06}{4})^{4*\frac{1}{2}}\Rightarrow A=\$1236.27[/tex]

10) Aubrey Daniel's case:

[tex]A=P(1+\frac{r}{n})^{nt}\Rightarrow A=5725(1+\frac{0.04}{4})^{4*3}\Rightarrow A\approx \$6451.07[/tex]

11) As for Angelo, similarly to Alicia.

[tex]A=P(1+\frac{r}{n})^{nt}\Rightarrow A=9855(1+\frac{0.06}{4})^{4*\frac{1}{2}}\Rightarrow A\approx \$10,152.87[/tex]

12) Simpson's. For semiannual n=2

[tex]A=P(1+\frac{r}{n})^{nt}\Rightarrow A=860(1+\frac{0.055}{2})^{2*1}\Rightarrow A\approx \$907.95[/tex]

13) Jana Lacey amount:

[tex]A=P(1+\frac{r}{n})^{nt}\Rightarrow A=4860(1+\frac{0.04}{4})^{4*\frac{1}{2}}\Rightarrow A\approx \$4957.69[/tex]

Answer:

Step-by-step explanation:

-5+8x-9=3(x+3)

8x-14=3x+9

8x-3x-14=9

5x-14=9

5x=9+14

5x=23

x=23/5

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

-216-3x=-12+6x

-216-3x-6x=-12

-216-9x=-12

9x=-216-(-12)

9x=-216+12

9x=-204

x=-204/9

x=-68/3

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

6-213-2x=-413-x

-207-2x=-413-x

-207-2x-(-x)=-413

-207-2x+x=-413

-207-x=-413

x=-207-(-413)

x=-207+413

x=206

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

-(4x+9)=2x-3(2x+3)

-4x-9=2x-6x-9

-4x-9=-4x-9

Infinitely many solutions.

Answer:

A. y=3/2x

B. y=3/2x

C. 18

Step-by-step explanation:

Answer:

s=-4.1

Step-by-step explanation:

you just need to divide by -5 of each item

so we have -5s/-5=21.5/-5

s=-4.1

Answer:

Cell division

Step-by-step explanation:

During the process where the cell splits, it’s going through a process of cell division where the cell divides into two

Hannah is 1 year old, and Biff is 26 years old today.

Let's denote Hannah's current age as H and Biff's current age as B.

According to the given information, we can set up two equations based on the provided conditions.

Biff is 25 years older than Hannah today:

B=H+25

Four years from now, Biff will be 6 times as old as Hannah will be:

B+4=6(H+4)

Now, we have a system of two equations with two variables.

We can substitute the expression for B from the first equation into the second equation:

(H+25)+4=6(H+4)

Combine like terms:

H+29=6H+24

Subtract H from both sides:

29=5H+24

Subtract 24 from both sides:

5H=5

Divide by 5:

H=1

So, Hannah is currently 1 year old. To find Biff's age, we can use the first equation:

B=H+25

B=1+25

B=26

Therefore, Hannah is 1 year old, and Biff is 26 years old today.

Answer:

m∠HMO=102°

Step-by-step explanation:

we know that

In a Rhombus the diagonals bisect the angles and opposite angles are equal

In this problem

Angles HMO and HTO are opposite angles

m∠HMO=m∠HTO

m∠HTM=(1/2)m∠HMO ----> because the diagonals bisect the angles and opposite angles are congruent

substitute the values

[tex](5x+6)\°=(1/2)(12x-6)\°[/tex]

solve for x

[tex]10x+12=12x-6\\12x-10x=12+6\\2x=18\\x=9[/tex]

Find the measure of angle HMO

m∠HMO=(12x-6)°

substitute the value of x

m∠HMO=(12(9)-6)=102°

see the attached figure to better understand the problem

Answer:

Step-by-step explanation:

Option C is the most reasonable answer, because there's no way that the color of the house affects the homeowners insurance premium.

A homeowners insurance premium refers to a monthly or annual payment to an insurance company which maintain the house and stuff insured. This amount can be variate depending on the size, location and age of the home, but not depends on the color of it.

Answer:

$1.20 per chicken wing

Step-by-step explanation:

15 chicken wings = $18

1 chicken wing = $18/15 = $6/5 = $1.20

Answer:

about 0.46 cents per ounce

Step-by-step explanation:

5.99 divided by 13 gives you a long decimal and you round to 0.46

Answer:

4712.39(2 decimal place)

Step-by-step explanation:

Volume of cylinder is πr^2(h)

π10^2(15):

is 4712.39(2dp)

Answer:

1500π

Step-by-step explanation:

The volume of water is just the normal volume so,

the volume of a cylinder is πr²h

where π is pi, as in 3.14 ..., r is the radius, and h is the height.

Using what was given to us, we can plug this into the formula

so, π ×10² ×15 = 100π×15 = 1500π

Answer:

$30,000 and $55,000

Step-by-step explanation:

If 4.5% loan is x, and the 6% loan is y, then:

x + y = 85000

0.045x + 0.06y = 4650

Solve the system of equations with substitution or elimination.  Using substitution:

0.045x + 0.06(85000 − x) = 4650

0.045x + 5100 − 0.06x = 4650

450 = 0.015x

x = 30000

y = 55000

Loan I = $ 30,000

Loan II = $ 55,000

Total loan of $ 85,000

Loan I rate at 4.5%

Loan II rate at 6%

This year's loan repayments are $ 4,650

0.045 + 0.06 = 4,650

Loan II = $ 85,000 - Loan I

0.045 ($85,000-b)+0.06 b= 4,650

Loan II = $55,000

Loan I = $ 85,000 - Loan II

Loan I = $85,000 - $55,000

Loan I = $30,000

Loan I rate = $ 1,350

Loan II rate = $ 3,300

Total Loans rate (I + II) - Payments = ($ 1,350  + $ 3,300) - $ 4,650 = $ 0 (Remaining balance)

Loans are a type of debt that can involve all types of tangible objects, although usually more often are identified with monetary loans. Like other debt instruments, a loan requires a redistribution of financial assets over time between the borrower (indebted) and the debtor (the creditor).

The borrower initially receives an amount of money from the lender to be paid back, often in the form of periodic installments, to the lender. This service is usually provided with certain costs which are referred to as interest on the debt. Borrowers can also get restrictions in the form of loan conditions.

Before applying for a loan you should know how to calculate the percent interest on a loan to check the correctness of the interest calculation specified on your credit.

Learn More

calculate the loan https://brainly.com/question/13976817

loan payment https://brainly.com/question/14021573

Details

Grade: High School

Subject: Mathematics

Keyword: loan, payment, borrowers

Option D. 2(n + 9) is the right answer

Step-by-step explanation:

The word problems are converted into mathematical problems to solve simply.

for the given problem

"two times the sum of a number and 9"

Let n be a number then

when there is and between two things they are performed first then next operation is performed so

the sum of a number and 9

[tex]n+9[/tex]

Then

two times the sum of a number and 9

[tex]2(n+9)[/tex]

Hence,

Option D. 2(n + 9) is the right answer

Keywords: Mathematical notation

Learn more about mathematical notation at:

#LearnwithBrainly

Final answer:

The correct expression is '2(n + 9),' which corresponds to choice D and represents two times the sum of a number and 9.

Explanation:

The expression that represents the statement 'two times the sum of a number and 9' is D. 2(n + 9). This is because you first need to find the sum of the number (let's call it n) and 9, which is represented as (n + 9). Then, the statement says 'two times' which means you need to multiply that sum by 2, resulting in 2 × (n + 9).

Answer:

the number of candy bars they have is not affected by the other factors like the budget or the student council

Final answer:

The number of candy bars is the independent variable because it can be manipulated or changed by the student council to affect the amount of money they earn.

Explanation:

The number of candy bars is considered the independent variable in this scenario. The independent variable is the one that is manipulated or changed in an experiment, and its value does not depend on any other variable.

In this case, the student council is selling candy bars to earn money for their budget, and the number of candy bars they sell is the variable that they have control over.

By increasing or decreasing the number of candy bars sold, they can affect the amount of money they earn for their budget.

Answer:

The area below the line is shaded.

Step-by-step explanation:

Using the zero-interval test [test point (0, 0)], we plug in 0 for both y and x to determine whether we shade below the line [the portion that DOES contain the origin] or above the line [the portion that does not contain the origin]. This is where me must verify the inequality as false or true:

[tex]\displaystyle 0 < 2[0] + 1 → 0 < 1[/tex]

This is a genuine statement, therefore we shade below the line.

I am joyous to assist you anytime.

Answer:

Let x = (the height of the fourth plant)

Then the average of the four heights will be:

(70+71+72+x)/4

Simplify it to (213+x)/4

This average has to be at least 73 inches. Meaning, it has to be greater than or equal to 73.

(I don't have the sign for greater/equal so I'll type >=)

(213+x)/4 >= 73

This is the inequality. Just solve for x, and you have the answer.

(213+x) >= 292

x >= 79

Another way: (I think it's easier to do it like this in my head)

You need average 73.

Look at the heights of the plants you have now: how far are they from 73?

The first is 3 less, the second is 2 less, and the third is 1 less.

The 'total deficit'' is 6.

So to make the average be 73, you need to cancel out the deficit by making an equal overage (by 6).

If you can only add one more plant... that plant has to be 6 inches higher than the average you want. So 73+6=79.

Step-by-step explanation:

Answer:

Step-by-step explanation:

The general form of an equation of a line:

Ax + By + C = 0

We have

y = -3              add 3 to both sides

y + 3 = -3 + 3

y + 3 = 0

where A = 0, B = 1, C = 3

Answer:

$44.31

Step-by-step explanation:

Regular Price = $42

Sales Tax Rate = 5  1/2% or 5.5%

The total cost would be the regular price PLUS the sales tax. We find the sales tax by finding 42's 5.5%.

First, converting percentage to decimal (dividing by 100):

5.5% = 5.5/100 = 0.055

Now finding 5.5% of $42:

42 * 0.055 = $2.31

Now, the total price is the SUM of regular and this sales tax:

Total Price = 42 + 2.31 = $44.31

Answer:

x<33.84

Step-by-step explanation:

13.48x - 200 < 256.12

13.48x - 200 + 200 < 256.12 + 200

13.48x < 456.12

13.48x / 13.48 < 456.12 / 13.48

x < 33.84

Answer:

b

Step-by-step explanation:

Final answer:

The correct shape for the cross-section of a cone, when cut perpendicularly to its axis, is a circle. This is known as a conic section. The correct option is C.

Explanation:

The student asked which shape represents the cross-section for a cone. The cross-sectional shape of a cone depends on the angle at which it is cut. If a cone is cut by a plane perpendicular to its axis (the center line from the tip to the base), the cross-section is a circle. Therefore, the correct shape for the cross-section of a cone, when cut perpendicularly to its axis, is a circle.

Answer:

[tex]\sin \theta=-\frac{4}{5}[/tex]

Step-by-step explanation:

Given:

Angle is in standard position which means the starting ray is at the origin. The terminal side has coordinates (3, -4).

So, the 'x' value is 3 and 'y' value id -4.

Using Pythagoras Theorem, we find the hypotenuse.

Hypotenuse = [tex]\sqrt{3^2+(-4)^2}=\sqrt{9+16}=\sqrt{25}=5[/tex]

Now, using the sine ratio for the angle, we have

[tex]\sin \theta=\frac{Opposite}{Hypotenuse}\\\sin \theta=\frac{-4}{5}\\\sin \theta=-\frac{4}{5}[/tex]

Therefore, the value of [tex]\sin \theta[/tex] is [tex]-\frac{4}{5}[/tex].

The value is negative as the point (3, -4) lies in the fourth quadrant and sine ratio is negative in the fourth quadrant,

Answer:

The speed of the pass that clocked is  30.31 yards per seconds

Step-by-step explanation:

Given as :

The speed of the pass = 62 miles per hour

Let The speed in yards per second = x yps

So, ∵ The speed = 62 miles per hour

Or, The speed = [tex]\dfrac{\textrm 62 miles}{\textrm 1 hour}[/tex]

or,  The speed = [tex]\dfrac{\textrm 62 miles}{\textrm 3600 secons}[/tex]

∵ In 1 hour = 3600 seconds

So, The speed = 0.0172 miles per second

Now, Again

Since 1 mile = 1760 yards

So, 62 miles = 1760 × 62 = 109,120 yards

∴ The speed in yard per second = [tex]\dfrac{\textrm 109,120 yard}{\textrm 3600 seconds}[/tex]

I.e The speed in yards per second = 30.31 yards per seconds

Hence The speed of the pass that clocked is  30.31 yards per seconds Answer

Answer:

27 / (4x⁶y⁸)

Step-by-step explanation:

[tex]\frac{4(3x^{2}y^{4})^{3}}{(2x^{3}y^{5})^{4}}[/tex]

When raised to a power, multiply the exponents.

[tex]\frac{4(3^{3}x^{6}y^{12})}{2^{4}x^{12}y^{20}} \\\\\frac{2^{2}3^{3}x^{6}y^{12}}{2^{4}x^{12}y^{20}}[/tex]

When dividing, subtract the exponents.

[tex]2^{2-4}3^{3}x^{6-12}y^{12-20}\\2^{-2}3^{3}x^{-6}y^{-8}[/tex]

Move negative exponents to the denominator.

[tex]\frac{3^{3}}{2^{2}x^{6}y^{8}}\\\frac{27}{4x^{6}y^{8}}[/tex]