1) Last year, Springfield Middle School had 640 students. This year, it has 480
students. What is the percent of decrease? *

Answers

Answer 1

The percent of decrease is -25%.

Given that,

Last year, Springfield Middle School had 640 students. This year, it has 480 students.

Calculation:

[tex]= (480 - 640) \div 640\\\\= -160 \div 640[/tex]

= -25%

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Related Questions

egadar amd fred share cupcakes in the ratio 3:1 if edgar gets 9 cakes how many does fred get(pleez someone anwer my question ​

Answers

Answer:

3

Explanation:

For every 3 cupcakes that Edgar gets, Fred gets 1. So, if Edgar gets 9, Fred gets 3.

(6h+8) - (3h+2) = 15

Answers

Answer:

h = 3

Step-by-step explanation:

This is the answer because:

1) Isolate the variable by dividing each side by factors that don't contain the variable.

Hope this helps!

Make t the subject of the formula

Answers

the answer is t= 3m+ 1 / m-1

t = (3m -1) / (m - 1)

What is subject of formula?

The subject of a formula is the variable that is being worked out. It can be recognized as the letter on its own on one side of the equals sign.

In order to change the subject of a formula, or rearrange a formula, items in the formula need to be rearranged so a different variable is the subject. Knowledge of solving equations and inverse operations is very useful.

Given formula.

m = t + 1 / t - 3

m ( t - 3) = t - 1

mt - 3m = t - 1

mt - t = 3m - 1

t(m - 1) = (3m - 1)

t = (3m -1) / (m - 1)

Hence, the formula becomes t = (3m -1) / (m - 1).

Learn more about subject of formula here:

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simple question just answer correctly to get brainleist and 10 pts! :)

Answers

Answer:

d.  The mapping represents y as a function of x, because each x-value corresponds to exactly one y-value.

Step-by-step explanation:

This would be a function as long as one x-value doesn't correspond to two y-values. If two x-values correspond to one y-value though, it still represents a function.

ANSWER

two inputs can have the same output but two different outputs can't have the same input so this does represent a function and is therefore D

The original price for the sweater is $80. Today it is on sale for 30% off. What is the sale price for the sweater?

Answers

Answer:

56

Step-by-step explanation:

30 percent of 80 is 24, subtract

Answer:

56

Step-by-step explanation:

8 x .7=56

you get .7 by subtracting the 30 percent or .3 from the original price

Kurt spots a bird sitting at the top of a 40 foot tall telephone pole. If the angle of elevation from the ground where he is standing to the bird is 59 ° , how far is Kurt standing from the base of the pole?

Answers

Answer:

i guess its 24.03 ft

Step-by-step explanation:

let height of pole be perpendicular length and distance from pole be the base .so tan59=P/b..& b= 24.03ft

Two lines, A and B, are graphed (Look at the picture):

Determine the solution and the reasoning that justifies the solution to the systems of equations.

a.(−4, 6), because both the equations are true for this point

b.(2, 8), because the graph of the two equations intersects at this point

c.(2, 8), because neither of the two equations is true for this coordinate point

d.(−4, 6), because the graph of the two equations intersects the axis at these points

Answers

Answer:

B. (2,8), because both equations intersect at this point

Answer:

B. (2,8), because both equations intersect at this point

Step-by-step explanation:

Why is it answer B? Because of Enlarging the graph, we find that the intersection of the two lines drawn is at point (2,8). Hence, the solution of the equation is (2,8) because the graphs of the two lines intersect at this point.

Given m∥n, find the value of x and y.

Answers

Answer:

x=15

y=63

Step-by-step explanation:

Solve 2y - 14 = -8 for y

Answers

The answer is y=3......

Answer: y = 3

Step-by-step explanation:

2y - 14 = -8

2y - 14 + 14 = -8 + 14

2y = 6

y = 3

HELPPPP.

Suppose a bird is 500 feet above the ground. It descends at a steady rate. After 10 seconds, it is 250 feet above the ground.
a) Write an equation that gives the height of the bird as a function of time. Be sure to define your variables!
b) After how many seconds will the bird land on the ground?​

Answers

Answer:

500-10x=250

x=how much the bird descended in a second

the bird will land on the ground in another 10 seconds.

Step-by-step explanation:

the bird will land on the ground in 10 seconds since it descended 250 ft in 10 seconds so that is 25 ft per second. then do 250/25 and you get 10. that is how you know the bird will land on the ground in 10 seconds.

Answer:

a) [tex]h(t)=500-25t[/tex]

b) [tex]t=20[/tex]

Step-by-step explanation:

a)

Let [tex]h[/tex] = height above ground

Let [tex]t[/tex] = time

Because the bird descended down to 250 feet in 10 seconds with a steady rate, that means it descends 25 feet per second.

∴   [tex]h(t) = 500-25t[/tex]

b)

To find the time it takes until the bird reaches the ground, [tex]h[/tex] must equal [tex]0[/tex]:

[tex]0=500-25t[/tex]

[tex]25t=500[/tex]

[tex]t=20[/tex]

∴ It takes 20 seconds for the bird to reach the ground.

use the line tool and select two points to graph the line
graph f(x) = - 0.25x + 4​

Answers

for the points on the graph that the other person provided, make sure they’re positive. positive is on the right, and top of the graph. negative is on the left and bottom side of the graph. just a little info :)

Answer:

8,2 and 0,4 are the points you need on the graph

Step-by-step explanation:

A construction crew has repaired 1.37 miles of a highway. The total length of the highway to be repaired is 7.9. How many miles are left to be repaired?

Answers

Answer:

Part A: m+1.37=7.9

Part B: 6.53 miles are left to be repaired.

Step-by-step explanation:

Given,

Length of repaired part = 1.37 miles

Total length to be repaired = 7.9 miles

Miles left to be repaired = m

Part A:

Create an equation to show the relationship between the number of miles repaired and the number of miles left to be repaired, m.

Miles left to be repaired + Length of repaired part = Total length to be repaired

m+1.37=7.9

Part B

How many miles are left to be repaired?

Subtracting 1.37 from both sides

6.53 miles are left to be repaired.

Keywords: length, subtraction

Step-by-step explanation:

Given the sum of the interior angles of a polygon, tell the number of sides of the polygon.

If the interior angle sum is 360°, the polygon has _
sides.
If the interior angle sum is 540°, the polygon has _
sides.
If the interior angle sum is 900°, the polygon has _
sides.
If the interior angle sum is 1260°, the polygon has _
sides.

Answers

Answer:

[tex] \underline{the \: sides \: are} \: \to \\ \underline{ \boxed{ n= 4}} \\ \: \underline{ \boxed{ n= 5}} \\ \:\underline{ \boxed{ n= 7}} \\ \: \underline{ \boxed{ n= 9}} \\ \: [/tex]

Step-by-step explanation:

[tex] \\ the \: sum \:o f \: the\: interior \: angles \: of \: aregular \: polygon \: \\ is \: generaly \: given \: by \to \: 180(n - 2)\\ \underline{ \boxed {case \:( 1) \to}} \\ If \: the \: interior \: angle \: sum \: is \: 360°, \\ then : \: the \: polygon \: has \to \: \\ 180(n - 2) = 360 \\ n - 2 = 2 \\ \underline{ \boxed{ n= 4}} \\ \: \underline{ \boxed {case \:( 2) \to}} \\ If \: the \: interior \: angle \: sum \: is \: 540°, \\ then : \: the \: polygon \: has \to \: \\ 180(n - 2) = 540 \\ n - 2 = 3 \\ \underline{ \boxed{ n= 5}} \\ \: \underline{ \boxed {case \:( 3) \to}} \\ If \: the \: interior \: angle \: sum \: is \: 900°, \\ then : \: the \: polygon \: has \to \: \\ 180(n - 2) = 900 \\ n - 2 = 5 \\ \underline{ \boxed{ n= 7}} \\ \: \underline{ \boxed {case \:(final ) \to}} \\ If \: the \: interior \: angle \: sum \: is \: 1260°, \\ then : \: the \: polygon \: has \to \: \\ 180(n - 2) = 1260 \\ n - 2 = 7\\ \underline{ \boxed{ n= 9}} \\ \: [/tex]

♨Rage♨

Answer:

4,5,7,9

Step-by-step explanation:

Got it right on edge

**PLEASE HELP I NEED IT WITHIN 20 MINUTES**

These are Trig Ratios and you can read the instructions to solve question 15 & 16 (if you can please show the work it would be greatly appreciated)

Answers

In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions[1][2]) are real functions which relate an angle of a right-angled triangle to ratios of two side lengths. They are widely used in all sciences that are related to geometry, such as navigation, solid mechanics, celestial mechanics, geodesy, and many others. They are among the simplest periodic functions, and as such are also widely used for studying periodic phenomena, through Fourier analysis.

Basis of trigonometry: if two right triangles have equal acute angles, they are similar, so their side lengths are proportional. Proportionality constants are written within the image: sin θ, cos θ, tan θ, where θ is the common measure of five acute angles.

The trigonometric functions most widely used in modern mathematics are the sine, the cosine, and the tangent. Their reciprocals are respectively the cosecant, the secant, and the cotangent, which are less used. Each of these six trigonometric functions has a corresponding inverse function (called inverse trigonometric function), and an equivalent in the hyperbolic functions as well.[3]

The oldest definitions of trigonometric functions, related to right-angle triangles, define them only for acute angles. To extending these definitions to functions whose domain is the whole projectively extended real line, geometrical definitions using the standard unit circle (i.e., a circle with radius 1 unit) is often used. Modern definitions express trigonometric functions as infinite series or as solutions of differential equations. This allows extending the domain of sine and cosine functions to the whole complex plane, and the domain of the other trigonometric functions to the complex plane (from which some isolated points are removed).

Contents

Right-angled triangle definitions Edit

A right triangle always includes a 90° (π/2 radians) angle, here labeled C. Angles A and B may vary. Trigonometric functions specify the relationships among side lengths and interior angles of a right triangle.

Plot of the six trigonometric functions, the unit circle, and a line for the angle θ = 0.7 radians. The points labelled 1, Sec(θ), Csc(θ) represent the length of the line segment from the origin to that point. Sin(θ), Tan(θ), and 1 are the heights to the line starting from the x-axis, while Cos(θ), 1, and Cot(θ) are lengths along the x-axis starting from the origin.

In this section, the same upper-case letter denotes a vertex of a triangle and the measure of the corresponding angle; the same lower case letter denotes an edge of the triangle and its length.

Given an acute angle A = θ of a right-angled triangle, the hypotenuse h is the side that connects the two acute angles. The side b adjacent to θ is the side of the triangle that connects θ to the right angle. The third side a is said to be opposite to θ.

If the angle θ is given, then all sides of the right-angled triangle are well-defined up to a scaling factor. This means that the ratio of any two side lengths depends only on θ. Thus these six ratios define six functions of θ, which are the trigonometric functions. More precisely, the six trigonometric functions are:[4][5]

sine

{\

What is the slope of the line (-3,0) and (0,-4)

Answers

-4/3



Explanation:

You would use the slope formula


y2-y1/x2-x1

-4-0/0-(-3)

-4/3

The answer is -4/3 hope this helps

Will give brainliest if correct.

Answers

Answer:

X Intercept: (6,0)

Y Intercept: (0,2)

Step-by-step explanation:

Plug y = 0 into the equation and solve the resulting equation −3x = −18 for x. Plug x = 0 into the equation and solve the resulting equation −9y = −18 for y.

Which phrase correctly describes the expression 4 × 3 – 1?
A.


One minus the product of four and three
B.


One less than the product of four and three
C.


One less than the sum of four and three
D.


Four times the difference of three and one

Answers

B because 4x3 then -1

again i need some help with this :D

Answers

Answer:

v + u - 4

Step-by-step explanation:


Solve the following
equation:
8x – 4(x + 8) = 8

Answers

Answer:

[tex]\huge\boxed{\sf x = 10}[/tex]

Step-by-step explanation:

[tex]\sf 8x-4(x+8) = 8\\\\Expanding \ Parenthesis\\\\8x-4x-32 = 8\\\\4x -32 = 8\\\\Adding \ 32\ to \ both \ sides \\\\4x = 8+32\\\\4x = 40\\\\Dividing \ both \ sides \ by \ 4\\\\\boxed{\sf x = 10}\\\\\rule[225]{224}{2}[/tex]

Hope this helped!

~AnonymousHelper1807

At the beginning of a baking session, there were 2.26 kilograms of flour in the bag. By the end of the baking session, there was 0.98 kilogram of flour in the bag. What is the percent of decrease in the amount of flour? Round the percent to the nearest tenth if necessary.

Answers

Answer:

The answer I got was 56.6%.



Bus A and Bus B leave the bus depot at 2 pm.
Bus A takes 15 minutes to complete its route once and bus B takes 25 minutes to complete its
route once.
If both buses continue to repeat their route, at what time will they be back at the bus depot
together?
Assume the buses have no breaks in between routes.
Give your answer as a 12-hour clock time.

Answers

Answer:

LCM(30, 35) = 210 minutes.

The 2 Buses will be back at the depot 210 minutes after 5pm, or 5pm + 210 minutes =5 + 3.5 hours =8:30pm

Answer:

4:30 PM

Step-by-step explanation:

Bus A will meet Bus B on it's 10th route at 150 min. Bus B will meet Bus A at its 6th route at 150 min. 150 is also 2 hours and 30 min so they will meet at 4:30 PM.

The bill came to 240. You leave 20% tip. How much is the tip?

Answers

Answer:

20% of 240 should be 48.

20% of 240 is equal to 48

A pet store has 8 dogs, 12 turtle, and 3 cats. Write a ratio for each of the following situations.
Turtles to dogs and cats:
dogs to turtles

Answers

Answer:

Turtles to dogs and cats: 12,8,3

dogs to turtles: 8,12

If f(x)=x2-1, what is f(4)?

Answers

Explanation
4^2-1
16-1
Answer
15

Answer: 15

Step-by-step explanation:

Substitute 4 in x.  

The number of sticks of gum varies directly as the number of packages. There are 36 sticks of gum in 2 packages. Suppose you have 5 packages of gum. Write and solve a direct variation equation to determine how many sticks you have

Answers

Answer:

36 x 2 = 72

36 divide by 2 = 18

72+18=90

90 is the answer

Step-by-step explanation:

what is the half way point for 20000 and 30000

Answers

25000 is halfway between the two

what is v=1/3Ah solving for A

Answers

Answer:

A=3V/h

That is the answer for solving for A

1.15÷0.23=? pls answer guys

Answers

Answer:

5

Step-by-step explanation: I used a calculator

PLEASE HELP An algebraic ___ is a mathematical phrase
With numbers, variables, operations for days.


is it coefficient , expression or evaluate

Answers

Answer: Expression

Hope this helps :)

Answer:

Expression

Step-by-step explanation:

The definition of an Algebraic Expression is this:

Algebra is an interesting and enjoyable branch of mathematics in which numbers, shapes, and letters are used to express problems.

It can not be an Algebraic Equation because that only includes one variable.

I Hope That This Helps! :)

PLEASE HELP ASAP VERY IMPORTANT I WILL DO ANYTHING THNK YOU SO MUCH ITS MY BDAY TMRW TOO

Answers

Answer:

i dont have the answers i just wanted to say happy b day

Step-by-step explanation:

Other Questions
During your lifetime, you will produce enough saliva to fill two swimming pools Tell me a fun factThe best one will get brainliest!! which of the following best represents force?1-a push or a pull acting on a object.2-a push or a pull always causing acceleration.3-a push or a pull action without an object.4-a push or a pull always causing motion PLEASE HELP I WILL GIVE YOU MULTIPLE BRAINLYS ON DIFFRENT POSTS!!!!!!! ANSWER QUICK PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE -11/16 what is that lol im so lost Evaluate each value expression for the given value of the variable : 33-7w +6 when w=4 Name this stage of the cell cycleA) prophaseB) MetaphaseC)interphaseD)telophase i need help what is the answer to this question I'm stuck on this math question attached Read the stanza from the poem "The Voice" by William Oandasan.jolting my dreaman old man strugglingwith an eel his coat appearsdisheveled and emptyWhat is the meaning of the word disheveled as it is used in the poem?unusualbulkyrippeduntidy2.Read these lines from "Elegy for My Brother Poet Filipino & Yuki Indian" by Vince Gotera.In Manila, Ferdinandand Imelda buried poets in iron and tarmacWhat does Gotera mean by "buried in iron"?Poets were put to death.Poets were jailed.Poets were silenced.Poets were mourned.3.Read these lines from "Elegy for My Brother Poet Filipino & Yuki Indian" by Vince Gotera. but your words are lizards, green and swift, dragonflies in a painted desert.Which tone is created by these lines?excited and confidentannoyed and regretfulfrightened and warytriumphant and hopeful4.Read these lines from "Elegy for My Brother Poet Filipino & Yuki Indian" by Vince Gotera....Helicoptergunships threatened peasants at harvest timein Vietnam, El Salvador, Afghanistanbut your words live on in sacred corn,in wheat's amber waves, in the holy wordsof Tayko-mol.How do these lines develop the theme of the poem that even in the face of evil, Oandasan could find beauty?They suggest that the words of Oandasan are literally the natural elements of the planet.They suggest that Oandasan had to hide transcripts of his poems in random spots in nature.They suggest that the words of Oandasan express hope even though terrible things happen. They suggest that Oandasan wrote poems while enjoying being in nature.5.Read this stanza from the poem "The Voice" by William Oandasan.for you, blue corn baby,my thoughtson a melody of lovesail the skyWhat does the speaker mean by these lines?He thinks about how much he loves every member of his community.He is in love with another human being.He likes to think about love songs for his friends and family.He has loving thoughts for the higher power in which he believes. What 2 things must pass out of the nuclear pores? How was the Mongol invader, Babur, different from Ibrahim and the previous sultans of Delhi? A disease, structure, operation, or procedure, named for the person who discovered ordescribed it first isabbreviationsynonymeponymacronym Will give brainlist. I need help. Twenty-three years earlier, King Louis XIV had issued a set of rules that defined slavery as legal in the French sugar islands. But when two slaves managed to reach France, he freed themsaying they became free "as soon as they [touched] the soil" of France. The judges sided with Paulineshe was real to them, human, not a piece of property. For Pauline's judges, as for King Louis, slavery far off across the seas was completely different from enslaved individuals in France. Which words best create a positive, hopeful tone? free, real, and human legal, rules, and judges King, individuals, and property islands, soil, and seas Write the type of each chemical reaction Choose a matching analogy for:branch : twigocean: sharktaxi : cartsunami: wavedictionary: definition please help, give explanation please! Convert 88 F to Celsius Round your answer to the nearest tenth. C 1) In the sentence below, match the each word with the kind of connotation it would give.a)strangledb)adornedc)climbed