Please help. I need to know the strategy, the correct work, and to identify the error.

Answer:

18.75  PLEASE GIVE BRAINLIEST

Step-by-step explanation:

8 hours = 30 gallons

30 ÷ 8 = 3.75 gallons of water used per hour

3.75 x 7 = 26.25 gallons used in 7 hours

45 - 26.25 = 18.75 gallons left after 7 hours

Answer:

27.27%

Step-by-step explanation:

Formula:

%= 100*(revenue-cost)/ revenue

%= 100* (121-88)/121

By 27.27%  the ticket price mark up.

The ratio of the increased value to the original value, multiplied by 100, is the percentage increase formula. It is outlined as a percentage. Anything's value will increase if it is valued more, so will its proportion.

Given:

Mark bought a concert ticket for $88.

Mark sold it for $121.

Change in amount= 121- 88 = $33.

So, the percent increase

= (121- 88) / 88 x 100

= 33/121 x 100

= 3/11 x 100

= 27.27%

Hence, the percent mark up is 27.27%.

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Answer:

3/4

Step-by-step explanation:

If he is 1/3 of the way to school, then the total distance he has to walk is 3 times what he has walked so far:

3*(1/4) -3/4

The distance from home to school is 3/4 mile.

Answer:

30.75 hours

Step-by-step explanation:

Let

x----> the number of hours worked last week

y ----> the number of hours that Juan work this week

we know that

To find out how many hours does Juan work this week, multiply the number of hours worked last week by 1.5

so

[tex]y=1.5x[/tex]

we have

x=20.5 hours

substitute

[tex]y=1.5(20.5)=30.75\ hours[/tex]

Because of its convenience and easy access to ATMs, debit cards are the most common form of payment today. 

Debit cards are linked to your bank account and will allow you to access those available funds. If you swipe your debit card it will automatically remove funds from your bank account to pay for your items. You are also able to use it at an ATM to withdraw cash. Most debit cards have an allowed amount of money you can withdraw from an ATM in a day. 

Answer:

Step-by-step explanation:

a Debit card

apex

4 over 4 (4/4) is equal to 1.

The equation can be rewritten as X = 4/32

4/32 can be simplified to 1/8

So you have X = 1/8

Answer:

1/8

Step-by-step explanation:

to simplify 4/32, you just have to see how many times 4 goes into 32, in this case the answer is 8. A good rule of thumb is if the smaller number is on the top of the fraction, you will get a fraction for an answer, so the 4 turns into 1 and the 32 turns into 8.

Answer:

If N is 38, next even number would be 40

Step-by-step explanation:

Any number ending with 0 2 4 6 8 is even, sorry if this ins't what you were asking I didn't understand completely

Answer:

which one was it

Step-by-step explanation:

Answer:

The correct option is C. The given graph represents the function f(x)=sin(x).

Step-by-step explanation:

From the given graph it is clear that the initial value of the function is 0.

The maximum value of function is 1 at [tex]x=\frac{\pi}{2}[/tex].

The minimum value of function is -1 at [tex]x=\frac{3\pi}{2}[/tex].

The period of the function is 2π.

The x-intercepts are 0, π, 2π.

These are the properties of a positive sine function. The given graph represents the function f(x)=sin(x).

Therefore the correct option is C.

To confirm the solution find the value of each function at x=0, and [tex]x=\frac{\pi}{2}[/tex]. The function must be satisfy by the points (0,0) and [tex](\frac{\pi}{2},1)[/tex]

For option (1),

[tex]f(x)=-\cosx[/tex]

[tex]f(0)=-\cos(0)=-1\neq 0[/tex]

Therefore option 1 is incorrect.

For option (2),

[tex]f(x)=\cosx[/tex]

[tex]f(0)=\cos(0)=1\neq 0[/tex]

Therefore option 2 is incorrect.

For option (3),

[tex]f(x)=\sinx[/tex]

[tex]f(0)=\sin(0)=0[/tex]

[tex]f(\frac{\pi}{2})=\sin(\frac{\pi}{2})=1[/tex]

Therefore option 3 is correct.

For option (4),

[tex]f(x)=-\sinx[/tex]

[tex]f(0)=-\sin(0)=0[/tex]

[tex]f(\frac{\pi}{2})=-\sin(\frac{\pi}{2})=-1\neq 1[/tex]

Therefore option 4 is incorrect.

Answer: C: 10

Step-by-step explanation: You need to use the equation a^2+b^2=c^2. So it's 6^2+8^2=x^2.

36+64=100

Square root of 100 is 10

10^2 = 100

Answer:

There was 36 apples and it had to be divided between five friends and they all had to get the exact same number of apples. However, the number o people was odd and the number of apples was even. At the end, how many apples would each kid get and how many would be left.

Step-by-step explanation:

36/5 = 7.2

7 apples X 5 kids = 35 apples in total

36 - 35 = 1 apple left

7 R1

Answer:

$59.50

Step-by-step explanation:

34/400=x/700

400x=23,800

x=59.5

Answer:

see below     Please give brainliest

Step-by-step explanation:

To find the tax rate:

$34 ÷ $400 = 0.085 = 8.5%

To figure amount of tax:

$700 x .085 (8.5%) = $59.50 is the amount of tax to be paid

Answer:

y = 125x+225

The programmer chargers a flat fee of 225 and then $125 per hour.

The charge for a 25 hour project is $3350

Step-by-step explanation:

To find the slope  (y2-y1)/(x2-x1)

          m = (1475-725)/(10-4)

             = 750/6

             =125

The slope is $125

Using the point slope form of the equation for a line

y-y1 = m(x-x1)

y-725 = 125(x-4)

Distribute the 125

y-725 =125x-500

Add 725 to each side

y-725+725 = 125x-500+725

y = 125x+225

The programmer chargers a flat fee of 225 and then $125 per hour.

If you have a 25 hour long project, let x =25

y = 125(25) + 225

y= 3125+225

y = 3350

There are no answer choices, so I will just list a few. But first, we need to create the equation.

Plugging in (5,7) into the equation y=mx+b, we can solve for b since all of the other variables are known, with m=3 as the slope.

So, 7=3*5+b

7=15+b

b = -8

y=3x-8 is your equation.

So, you can plug in any value of x you get a certain value of y.

(1,-5), (2,-2), (3,1), (4,4), (5,7), (6,10), (7,13)

Answer:

(6, 10)

Step-by-step explanation:

slope = [tex]\frac{change in y}{change in x}[/tex] = [tex]\frac{3}{1}[/tex]

to find another point on the line add 3 to the y-coordinate and add 1 to the x-coordinate

(5, 7) → (5 + 1, 7 + 3) → (6, 10) ← other point on line

continue to do this for other points

(6, 10) → (6 + 1, 10 + 3) → (7, 13)

8 (7) - 4 =

56 - 4 = 52

I hope this helps! Have a good night!

Question

what is -3/4 × -8 ?

Answer:

Step-by-step explanation:

-3/4 * (-8) =

-3 * (-2) =

6

Answer:

315, 317, and 319

Step-by-step explanation:

So first we have to set the equation up. Since it is odd, we would write

[tex](x-2)+x+(x+2)=951[/tex]

where x is the middle integer. This gets you

[tex]3x=951[/tex]

Solving for x we get

[tex]x=317[/tex]

Since x was the middle, we subtract 2 and add 2 and put them together in ascending order, or 315, 317, and 319.

Answer: 90

Step-by-step explanation:because  if you times 10 to get 30 so you also times it by 9 so 9 x 10 = 90

Look at the picture.

ΔZYX and ΔDYC are similar. Therefore the lengths of sides are in proportion:

[tex]\dfrac{DC}{ZX}=\dfrac{DY}{ZY}[/tex]

DC = x

ZX = 16

DY = a

ZY = a + a = 2a

Substitute:

[tex]\dfrac{x}{16}=\dfrac{a}{2a}[/tex]

[tex]\dfrac{x}{16}=\dfrac{1}{2}[/tex]       multiply both sides by 16

[tex]\boxed{x=8}[/tex]

Answer:

a=[tex]\frac{3}{x^{2} }[/tex]

b=5

Step-by-step explanation:

we are given

[tex]\frac{3}{x} }[/tex]+[tex]\frac{5}{x^{2} }[/tex]=ax+[tex]\frac{b}{x^{2} }[/tex]

we will compare both sides of equaion

 [tex]\frac{b}{x^{2} }[/tex]=[tex]\frac{5}{x^{2} }[/tex]

comparing both sides we get

b=5

and

[tex]\frac{3}{x} }[/tex]=ax

a=[tex]\frac{3}{x^{2} }[/tex]

hence

a=[tex]\frac{3}{x^{2} }[/tex]

and   b=5

Answer:

a=3

b=5

Step-by-step explanation:

answers on edge

Answer:

y = 13x

Step-by-step explanation:

Hey there!

In order for you to solve this equation, you could do PEMDAS

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

                 [tex]1.567+2.345-1.83(5)[/tex]

                [tex]1.567+2.345= 3.912[/tex]

                [tex]3.912- 1.83(5)[/tex]

               [tex]1.83(5) = 9.15[/tex]

              [tex]3.912 -9.15 = -5.238[/tex]

[tex]\boxed {AnswerB: -5,238}[/tex]

Good luck on your assignment and enjoy your day!

~[tex]LoveYourselfFirst:)[/tex]

Answer:

-5.238

Step-by-step explanation:

Remember your order of operations. Multiplication happens before subtraction.

3.912 - 9.15

-5.238

The equation of the given straight line in slope-intercept form is y = 3x + 9. The y-intercept or the point at which the line crosses the y-axis (0,9), and the rate of change or slope of the line is 3.

The equation of a line in slope-intercept form is expressed as y = mx + b where m represents the slope of the line, and b represents the y-intercept.

Given the information from the figure, the slope m is 3 and the y-intercept b is 9. Therefore, the equation of the line in slope-intercept form can be written as y = 3x + 9.

The line intersects the y-axis at (0,9) which is the y-intercept in coordinate form. The rate of change, represented by the slope, is 3, which means for every increase of 1 unit on the x-axis, the y-value increases by 3 units.

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Answer:

y = 3x-3

Step-by-step explanation:

y = mx+b

m is your slope and b is your y-intercept

plug those numbers in

y = 3x-3

The slope-intercept form:

y = mx + b

m - slope

b - y-intercept

We have m = 3 and b = -3. Substitute:

Answer:

Russell:  40 pounds; Sarah:  100 pounds; and Terry:  160 pounds.

Step-by-step explanation:

The three different amounts of money are 2x, 5x and 8x, or 15x.

Terry gets 8x, whereas Russell gets 2x, and 8x - 2x = 120 pounds.

Solving for x, 6x = 120 pounds, and so x = 20 pounds.

Russell gets 2(20 pounds);  Sarah gets 5(20 pounds); and Terry gets 8(20 pounds), or 40 pounds, 100 pounds and 160 pounds.  Note that 40 pounds is 120 pounds less than 160 pounds, as required by the problem.

In this ratio problem, the total money is split into 15 portions. Each portion is worth 20 pounds. Russell gets 40 pounds, Sarah gets 100 pounds and Terry gets 160 pounds.

The subject of this question is ratios and its application to practical problems. In this problem, Russell, Sarah and Terry share money in the ratio 2:5:8, meaning the total money is shared in 15 portions (2+5+8). As we know that Russell gets 120 pound less than Terry, which would be 6 portions (8 portions for Terry - 2 portions for Russell).

Therefore, each portion of money is equal to 120 pound divided by 6, which is 20 pound. So, Russell receives 2 portions which equals 40 pound (2 x 20), Sarah receives 5 portions which equals 100 pound (5 x 20) and Terry receives 8 portions which equals 160 pound (8 x 20).

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Answer:

11,200 yards

Step-by-step explanation:

First, plot all the points on a graph. Then draw Liza's path. Add them all up and multiply by 400.

28 · 400 = 11,200.

Liza walked 11,200 yards.

My graph is attached. The blue line is Liza's path and each coordinate point is labeled.

I hope this helps u!!

:)

Answer:

11,200 yards.

Step-by-step explanation:

Distance between two points is;

Distance = √(x²+y²)

Distance between Bank and post office = √(5²+0)

                                                                     = 5

Distance between post office and dry cleaner = √(0+9²)

                                                                              = 9

Distance between Dry cleaner and pizza shop = √(0+5²)

                                                                                = 5

Distance between Bank and pizza shop  = √(9²-0)

                                                                    = 9

Total distance = 5+9+5+9

                       = 28 units

1 unit ⇒ 400 yards

28 units ⇒ (28×400)

              ⇒ 11,200 Units

Answer:

Measures 1 and 3

Step-by-step explanation:

Eighth notes appear as a quarter note with flag on the end. Dotted quarter notes are quarter notes with a dot.

Answer:

C. First and fourth quartiles

Step-by-step explanation:

Let's see what outliers are.

If a data value is very far away from the quartiles (either much less than Q1 or much greater than Q3 ), it is sometimes designated an outlier .

Therefore, from the above definition.

Outliers are always in " first and fourth quartiles"

Answer: C. First and fourth quartiles.

Thank you.

Answer:

The image with 25, 144 and 169 represents proof of the Pythagorean Theorem.  

Step-by-step explanation:

The Pythagorean Theorem is used to find the missing side of a right triangle.  The formula is a^2 + b^2 = c^2, where 'a' and 'b' represent the legs of the triangle (the ones the form the 90 degree angle) and 'c' represents the hypotenuse (the diagonal across from the 90 degree angle).  In the case of the three squares, the area of each square is given.  The area of a square is simply the base multiplied by the height, which in the case of a square those dimensions are the same.  So, taking the square root of 25 = 5, the square root of 144 =12 and the square root of 169 = 13.  If we apply the Pythagorean Theorem formula, we get 5^2 + 12^2 = 13^2, or 25 + 144 = 169.  This image proves the Pythagorean Theorem holds true.  

To solve the inequality 12x+7<−11 OR 5x−8>40, isolate x in each equation. The solutions are x < -1.5 and x > 9.6.

To solve for the inequality 12x+7<−11 OR 5x−8>40, we first need to simplify each equation separately i.e isolate x in each separate equation.

For the inequality 12x + 7 < -11: Subtract 7 from both sides, which gives 12x < -18. Then divide by 12 which will yield x < -1.5.

For the inequality 5x - 8 > 40: Add 8 to both sides, which gives 5x > 48. Then dividing both sides by 5, we get x > 9.6.

Our answer is therefore x < -1.5 OR x > 9.6. This means that any x value satisfying either of these conditions will satisfy the original inequality.

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To solve the compound inequality 12x + 7 < -11 OR 5x - 8 > 40, solve each inequality separately to find x < -1.5 or x > 9.6. This means x can be any value less than -1.5 or greater than 9.6.

To solve for x in the given compound inequality, we need to handle each inequality separately.

Step-by-Step Solution:

Therefore, the solution to the compound inequality is x < -1.5 OR x > 9.6.

This means x can be any number less than -1.5 or greater than 9.6.