please answer below :-)

Please Answer Below :-)

Answers

Answer 1

Answer:

B. 88.8

Step-by-step explanation:

let x represent class y

(x+71.2)/2=80   multiply each side by 2

x+71.2=160      subtract 71.2 by both sides

x=88.8

or

trial an error

replace x with each of the numbers and see if it plugs in.

example:

(80.5+71.2)/2=80

151.7/2=80

75.85=80?

false. incorrect

another example:

(88.8+71.2)/2=80

160/2=80

80=80?

true. correct


Related Questions

Dinner at olive garden cost $52.37. You Leave a 20% tip, What is the total cost

Answers

Answer:

62.84

Step-by-step explanation:

52.37 times 1.20(how you calculate tip) =62.84

Answer:

$62.84

Step-by-step explanation:

Tip is $10.47 add that with 52.37

If you want to leave a 20% tip, multiply the cost by 0.20 to get the tip amount or multiply the cost by 1.20 to get the total including tip.

cos 25° cos 20° - sin 25° sin 20° please help

Answers

Answer:

sin 20

Step-by-step explanation:

that is the answer it's sin 20 trust me

DEFG is a square. Find the measure of each of the angles,

Answers

Answer:

EFG = 90°

GDH = 45°

FEG = 45°

DHG = 90°

have a great day!

Find the mean absolute deviation. Round to the nearest tenth.

Answers

1.5
Lololoolooklooloollooloollooll

Solve for x. Enter the solutions from least to greatest. (x + 1)^2 - 36 = 0 Lesser x=____ Greater x=____

Answers

Answer: [tex]-7\ \text{and}\ 5[/tex]

Step-by-step explanation:

Given

The equation is [tex]\left(x+1\right)^2-36=0[/tex]

Solving it

[tex]\Rightarrow \left(x+1\right)^2=36\\\\\Rightarrow \left(x+1\right)=\pm\sqrt{36}\\\\\Rightarrow x+1=\pm6\\\Rightarrow x=-7,5[/tex]

So, the lesser value of [tex]x[/tex] is [tex]-7[/tex] and the greater value is [tex]5[/tex].

Edward invested $43,800 in an account which yields 4.8% annually and is not compounded. How much will be in the account after 2 years?

Answers

Answer:

betch Corvette Corvette hop 9n a coloor

Answer:

If the money isnt compounded i dont think he would make anything. Could you repost the question multiple choice?

Look at the two right rectangular prisms.
1 ft
Ift
1 ft
2 ft
2.5 ft
What is the volume of solid in cube feet

Answers

where’s the two right rectangular prisms?

Answer:

I cannot tell you the answer because there isn't adequate information.

But to calculate the volume of a rectangular prism, simply multiple the length width, and height (LWH)

A bakery sells chocolate, vanilla, and strawberry cakes. The cakes are sold randomly to customers. If there are 6 chocolate cakes, 12 vanilla cakes, and 9 strawberry cakes, what is the probability that you order a cake and get a vanilla or strawberry cake?

Answers

The answer is 12/27 I think

what is the unit rate of 2250 pencils in 18 boxes

Answers

Answer:

184

Step-by-step explanation:

i did it this on a test a while back

Answer: 125 Pencils per Box

Step-by-step explanation:

This is a fraction equal to

2250 Pencils ÷ 18 Boxes

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 18

2250 Pencils ÷ 18

18 Boxes ÷ 18

=  

125 Pencils

1 Box

=  

125 Pencils

Box

= 125 Pencils per Box

Karl bought ​ 3 1/2 ​ gallons of milk that cost $2.70 per gallon.What was the total cost of the milk?

Answers

Answer:

The answer is 9.45

Step-by-step explanation:

2.7*3.5=9.45

What is 10x5721? This is for my math homework.

Answers

Answer: Seriously? It’s 57210

Step-by-step explanation:

Answer:

on the contray please help me with one of the questions idc which one

Step-by-step explanation:

answer is 57210

Which algebraic expression represents 10 less than a number?
A. n + 10
B. 10 – n
C. n – 10
D. 10n

Answers

Answer:

C

Step-by-step explanation:

It means a no minus 10. I hope this helps. Good luck

Answer:  C) n - 10

============================================

Explanation:

Consider an example of saying "10 less than 50" would mean we compute 50-10 = 40

Another example would be "10 less than 78" so we say 78-10 = 68

In general, we would use algebra to go from "10 less than a number" to "a number - 10" to n - 10

Whatever n is, we subtract 10 from it to get that expression.

From there, we replace n with various numbers. Eg: replace n with 50

n-10 = 50-10 = 40

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

Be careful not to mix up "10 less than a number" with "10 is less than a number". The "is" being the difference. This single word will change what the symbol interpretation will be.

"10 is less than a number" translates to 10 < n

Please help me find domain/ range and equation

Answers

Answer:

The domain is the x axis from - 10 to 10 horizontal and the range is the y axis - 10 to 10 vertical

Range = (-infinity, infinity)

Domain = (-infinity, infinity)

The general form of a cubic equation not centered at the origin is y = a(x - h)^2 + k.

From the picture, a = -1, h = 4 and k = -2.

Your equation is y = -(x - 4)^3 - 2.

A school had $3,000 to spend on technology. They spent $350 on a new projector. The function f(x)=299x+350 gives the total amount of money spent on technology after buying x tablets. If a teacher finds the tablets on sale for $249 each, how will the function change? Select three statements that are true.
AThe y-intercept of the function will not change
b The domain of the function will change from 0≤x≤8 to 0≤x≤10.
cThe range of the function will not change
dThe y-intercept of the function will decrease by $50.
eThe domain of the function will change from 0≤x≤10 to 0≤x≤12.
fThe range of the function will change

Answers

Answer:

The y-intercept of the function will not change.

Step-by-step explanation:

The given function is:

[tex]f(x)=2x-4[/tex]

It is defined on the domain

.

We need to find the range:  

The range is the set of output values.  

[tex]2\leq x\leq 6[/tex]

Multiply 2 on each side.  

[tex]4\leq 2x\leq 12[/tex]  

Subtract 4 from each side.  

[tex]4-4\leq 2x-4\leq 12-4[/tex]  

[tex]0\leq f(x)\leq 8[/tex]  

[tex]0\leq y\leq 8[/tex]  

The range of the function is .

Therefore, the correct option is A. The y-intercept of the function will not change.

There are 60 teachers in the school. 40 of them are from Ireland. What fraction of teachers are from Ireland?

Answers

40/60 are from Ireland

Consider the equation:
X^2-6 = 2 – 18x
1) Rewrite the equation by completing the square
2) What are the solutions to the equation?

Answers

The equation should be rewritten by completing the square as x² + 18x + (18/2)² = 8 + (18/2)².

The solutions to the equation is x = -9 + √89 or x = -9 - √89.

What is a quadratic equation?

In Mathematics and Geometry, the standard form of a quadratic equation is represented by the following equation;

ax² + bx + c = 0

Next, we would solve the given quadratic equation by using the completing the square method;

x² - 6 = 2 - 18x

x² + 18x = 8

In order to complete the square, we would have to add (half the coefficient of the x-term)² to both sides of the quadratic equation as follows:

x² + 18x + (18/2)² = 8 + (18/2)²

x² + 18x + 81 = 8 + 81

Part 2.

x² + 18x + 81 = 89

x² + 9x + 9x + 81 = 89

x(x + 9) + 9(x + 9) = 89

(x + 9)(x + 9) = 89

x = -9 + √89 or x = -9 - √89.

Read more on quadratic functions here: brainly.com/question/14201243

#SPJ1

If y varies directly with x and y = 28 when x = 4, what is y when x = 3?


Answers

Answer:

y=21

Step-by-step explanation:

Since x and y vary directly, they will be proportionate to each other. In this case, y is 7 times larger than x. We know this because 28/4=7. So, the equation that describes their relationship is y=7x. This means that to find y plugin x. Therefore, y=21 because y=7(3).

9.
Find the slope of the line.



A. -1/4

B. 4

C. 1/4

D. -4

Answers

Answer:

9. A. -1/4

Step-by-step explanation:

Plug the points into the equation y2-y1/x2-x1. In this case, I chose the points (0,-2) and (4,-3). This would make the equation -3--2/4-0. This would be equal to -3+2/4 or -1/4. Therefore, the slope is -1/4.

If this has helped you please mark as brainliest

Answer:

A. -1/4

Step-by-step explanation:

Find the length, x, of the third side of the triangle.​

Answers

is it 10.5625? i could be wrong

Answer:

[tex]x=6.5~ units[/tex]

Step-by-step explanation:

[tex]x=\sqrt{13+29.25}[/tex]

[tex]= \sqrt{42.25}[/tex]

[tex]x=6.5[/tex]

: £50 is worth €56
How many euros is £1 worth?

Answers

Answer:

Let's make this a ratio:

50:56

Divide by 50 on both sides (since they made it a unit rate).

1:1.12

1.12 is your answer.

Just need to know the answer for this I’m stuck !

Answers

Answer:

6

Step-by-step explanation:

By intersecting chords theorem:

[tex]14(x - 3) = 12(x - 2) \\ \\ 14x - 42 = 12x - 24 \\ \\ 14x - 12x = 42 - 24 \\ \\ 2x = 18 \\ \\ x = \frac{18}{2} \\ \\ x = 9 \\ \\ LG = x - 3 \\ \\ LG = 9 - 3 \\ \\ LG = 6[/tex]

P + 3.89 = 19.74
Have a good weekend

Answers

Answer:

15.85

Step-by-step explanation:

P + 3.89 = 19.74

Subtract 3.89 from both sides to isolate the variable.

P = 15.85

What percentage would my grade be if I got a 50% on a project that is worth 20% of my grade and my grade is 87%/B+.

How much would my grade go down?

PLEASE HELP ME

Answers

Answer:

you got 21.5/50 on final grade

and aslo follow me for more information

What type of transformation does the image below depict?
two triangles on a cartesian plane with an arrow in between
translation
dilation
rotation
reflection

Answers

Answer:

Rotation

Step-by-step explanation:

follow v.sauce.memes on ig

Which is the correct from of the quadratic formula?

Answers

Answer:

Step-by-step explanation:

The quadratic formula allows us to solve any quadratic equation that's in the form ax^2 + bx + c = 0.

(The quadratic formula helps us solve any quadratic equation. First, we bring the equation to the form ax²+bx+c=0, where a, b, and c are coefficients. Then, we plug these coefficients in the formula: (-b±√(b²-4ac))/(2a) .)

In trapezold ABCD, point D has coordinates D(1,3). If the trapezoid is translated
2 units left and 5 units down, what are the coordinates of D'?

Answers

Answer:

D’(-1,-2)

Step-by-step explanation:

Left = x -2 = 1-2 = -1

down = y-5 = 3-5 = -2

PLEASE HELP DUE TODAYY

Answers

Answer:

y <= 0

Step-by-step explanation:

it's shaded when the value of y is 0 or below 0 (the vertical axis)

Below the line is shaded so it would have to be one of the less than or equal to answer choices. There is nothing above 0 and x is infinity. Therefore the answer is Y is less than or equal to zero

what equation represents the model shown below?

Answers

Given:

The algebra tiles of an equation.

To find:

The equation represented by the given model.

Solution:

On the left side of the model we have 4 tiles of (-x) and 3 tiles of (-1). So,

[tex]LHS=(-x)+(-x)+(-x)+(-x)+(-1)+(-1)+(-1)[/tex]

[tex]LHS=-4x+(-3)[/tex]

[tex]LHS=-4x-3[/tex]

On the right side of the model we have 8 tiles of (-1). So,

[tex]RHS=(-1)+(-1)+(-1)+(-1)+(-1)+(-1)+(-1)+(-1)[/tex]

[tex]RHS=-8[/tex]

Now, equate the LHS and RHS to get the equation.

[tex]-4x-3=-8[/tex]

Therefore, the equation for the given model is [tex]-4x-3=-8[/tex].

Will mark Brainlyist I need help ASAP

Answers

1. 3cm ,M is the midpoint
2. ND , 3cm,
3. BC, According to the diagram
4. 12 Cm

REINFORCE Tickets to the zoo cost $18 for adults and $8.25 for children. One day, the zoo sold 2,300 tickets and collected $30,168 in ticket sales. How many children and how many adults attended the zoo that day? Write a system and solve it by graphing. Be sure to sketch you graph, give the solution, and define your variables.

Answers

Given:

The cost of adults ticket = $18

The cost of children's ticket = $8.25

Total tickets = 2300

Total revenue = $30,168.

To find:

The number of children and number of adults attended the zoo that day.

Solution:

Let x be the number of children and y be the number of adults.

Equation for tickets: [tex]x+y=2300[/tex]                  ...(i)

Equation for revenue: [tex]18x+8.25y=30168[/tex]        ...(ii)

Plot the graphs of the given equations on a coordinate plane as shown below.

From the graph it is clear that the graph of both equations intersect each other at (1148,1152).

It means the number of adults is 1148 and the number of children is 1152.

It can be solved algebraically as shown below:

Substitute the value of y in (ii) from (i).

[tex]18x+8.25(2300-x)=30168[/tex]

[tex]18x+18975-8.25x=30168[/tex]

[tex]9.75x=30168-18975[/tex]

[tex]9.75x=11193[/tex]

Divide both sides by 9.75.

[tex]x=\dfrac{11193}{9.75}[/tex]

[tex]x=1148[/tex]

Putting [tex]x=1148[/tex] in (i),  we get

[tex]1148+y=2300[/tex]

[tex]y=2300-1148[/tex]

[tex]y=1152[/tex]

Therefore, the number of adults is 1148 and the number of children is 1152.

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