Nine students in Maddie's classroom are wearing red. There are
30 students in her class. Maddie says that 30% of her class is
wearing red. Is Maddie correct? Explain your reasoning,

Answers

Answer 1

Answer:

She is correct because 30 percent of 30 is 9 or in other words if you multiply 30 by 30 percent you get 9.

Step-by-step explanation:

Answer 2

Answer:

Yes she is correct cause 30 times 30 percent is 9

Step-by-step explanation:


Related Questions

Monica is a lawyer who earns $8.322.65 every month. She spends $830.98 on rent, $210.36 on food, and $120.45 on gas every month. After these expenses, she has left from her earnings.

Answers

If you subtract all these you would get $7160.86

i need bro with this problem

Answers

Answer:

what is the question ????

What question I don’t see no question here

$3.00 markup 72%
Thanks for helping

Answers

Answer:

$5.16

Step-by-step explanation:

3.00 times 0.72 is 2.16. Because it's a markup that means you add. 3.00 plus 2.16 is 5.16.

Hi :) could I have some help?​

Answers

- 6 2/3 , root 36 , 6.4, 71/11

Answer:

1) -6 2/3

2) \sqrt{36} (square root of 36)

3) 6.4

4) 71/11

Step-by-step explanation:

put them all as a decimal, it might make it easier

Please help me with this question and explain it

Answers

Answer:

(1, 1)

Step-by-step explanation:

Multiply x and y by 0.25 to find the new coordinates after dilation

What is a term I’m doing this math

Answers

a word or phrase used to describe a thing or to express a concept, especially in a particular kind of language or branch of study.

Answer:

A term is one part of an equation in math, for example 9x+2x=3. a term would be 9x

Step-by-step explanation:

PLEASE HELP IT'S ON A TEST!

What is an equation of the line that passes through the point (2, 4) and is perpendicular to the line whose equation is y = 2x + 1?

Answers

Answer:

y=-1x+6

Step-by-step explanation:

desmos

Help me with the top please

Answers

Answer:

Step-by-step explanation:

first option

Answer:

where you can define or adjust what you share and how your account is handled!

Find the value of x and y

Answers

Answer:

I found it hard to explain through text so the answer and explanation is there in the picture given above.

don't mind my handwriting....

I was writing fast....

Step-by-step explanation:

i hope this helps...

please can I have brainliest?

it would be really nice if I got one...

have a great day ahead :)

What is an equation of the line that passes through the points (-5, 4) and (5, -8)?

Answers

Answer:

Y= -1.2x-2

Step-by-step explanation:

Double the difference of a number n and 3 is -10. Which equation models this "number riddle" correctly?
A. 2 - n - 3 = -10
B. 2(3 - n) = -10
C. 2 (-10) = 3
D. 2(n - 3) = -10

Answers

Answer: D

Explanation

please help asap question 2*****

Answers

Answer:

(11, 4)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define systems

x + y = 15

-2x + 5y = -2

Step 2: Define variables

Given: x = 11

Step 3: Solve for y

Define equation:                    x + y = 15Substitute in x:                       11 + y = 15Isolate y:                                 y = 4

5/3 rewrite fraction with a denominator of 12​

Answers

Answer: 20/12

Step-by-step explanation: In order to get a 12 in the denominator

of 5/3, we multiply top and bottom of 5/3 by 4 to get 20/12.

So 20/12 is an equivalent fraction.

The altitude of a tree affects the rate at which the tree grows. G(A),models the growth rate (in millimeters per year) of a certain kind of tree at an altitude A (in kilometers above sea level). Match each statement with the feature of the graph that most closely corresponds to it.

Answers

Answer:

y-intercept: at sea level, the tree grows by 1.4 millimetres each year, Relative minimum or maximum: the fastest possible growth rate is 2.6 millimetres per year, Increasing or decreasing interval: as the altitude surpasses 7 kilometres above the sea level, the growth rate of the tree declines

Step-by-step explanation:

°ω°

What is the value of the expression below?
6 + 5(9 ÷ 3)2

Answers

Answer:

36

Step-by-step explanation:

Divide 9 and 3

6 + 5 x 3 x 2

6+30

= 36

write the expression n n n n n n using an exponent. Name the base and the exponent.​

Answers

Answer:

n⁶

Step-by-step explanation:

Base= n

exponent=⁶

PLS HELP I AM BEING TIMEDD​

Answers

ANSWER:

ANSWER:

Answer:

Answer:

Answer:

Standard form of a line that has a slope of -1 and passes through (-5,-1)

Answers

Step-by-step explanation:

y + 1 = -(x+5)

y + 1 = -x - 5

y = -x - 6

x + y = -6

Solve for A please :)

Answers

Answer:

a = 54 deg

Step-by-step explanation:

Recall that for a triangle, any exterior angle equals the sum of its two remote interior angles (see attached for reference).

In our case the exterior angle is 2a and the remote interior angles are (a+10) and 44

hence,

2a = (a+10) + 44

2a = a + 10 + 44

2a = a + 54   (subtract a from both sides)

2a - a = 54

a = 54 deg

Use elimination to solve the system.
5x - 2y - 39 = 0
2x + 5y - 33 = 0
The solution set is { }
(Simplify your answer. Type an ordered pair.)

Answers

Answer:

the answer to your question is (9,3)

Find the regression​ equation, letting the first variable be the predictor​ (x) variable. Find the best predicted Nobel Laureate rate for a country that has 78.8 Internet users per 100 people. How does it compare to the​ country's actual Nobel Laureate rate of 2 per 10 million​ people

Answers

The table is missing, so i have attached it.

Answer:

Regression equation is;

y = 0.2028x - 8.443

The predicted value is not at all close to the actual novel rate

Step-by-step explanation:

The internet users will be the x-values while the novel laureates will be the y-values.

Thus, sum of x values is;

Σx = 79.5 + 79.6 + 56.8 + 67.6 + 77.9 + 38.3 = 399.7

Sum of y values is;

Σy = 5.5 + 9 + 3.3 + 1.7 + 10.8 + 0.1

Σy = 30.4

Σx² = 79.5² + 79.6² + 56.8² + 67.6² + 77.9² + 38.3²

Σx² = 27987.71

Σy² = 5.5² + 9² + 3.3² + 1.7² + 10.8² + 0.1²

Σy² = 241.68

Σxy = (79.5 × 5.5) + (79.6 × 9) + (56.8 × 3.3) + (67.6 × 1.7) + (77.9 × 10.8) + (38.3 × 0.1)

Σxy = 2301.16

The regression line will be;

y = b1(x) + b0

b1 is expressed as;

b1 = [nΣxy - (Σx • Σy)]/[nΣx² - (Σx)²]

Where n is number of given data which is n = 6.

Thus;

b1 = [(6 × 2301.16) - (399.7 × 30.4)]/[(6 × 27987.71) - (399.7)²]

b1 = 1656.08/8166.17

b1 = 0.2028

b0 is expressed as;

b0 = [(Σy • Σx²) - (Σx • Σxy)]/[nΣx² - (Σx)²]

b0 = [(30.4 × 27987.71) - (399.7 × 2301.16)]/[(6 × 27987.71) - (399.7)²]

b0 = -68947.268/8166.17

b0 = -8.443

Thus, regression equation is;

y = 0.2028x + (-8.443)

y = 0.2028x - 8.443

Best predicted value is given as;

y¯ = (Σy)/n

y¯ = 30.4/6

y¯ = 5.067 per 10 million people.

The predicted value is far greater than the actual value of 2 per 10 million​ people.

Thus, we can say that the predicted value is nowhere close to the actual value

Type an equation that can be used to answer the question in
the first box.
Then type the solution to the equation in the second box.
You are reading a book that has 150 pages. You have
already finished 60 pages and you are reading 3 pages per
day.
How many days will it take for you to finish the book?
Use d as the variable.

Answers

Answer:

3d + 60 = 15030 days

Step-by-step explanation:

Required equation is:

3d + 60 = 150

Solution:

3d = 150 - 603d = 90d = 90/3d = 30 days

pls answer pls.mill mark brainliest

Answers

Answer:

x^10

Step-by-step explanation:

PLEASE PLEASE PLEASE HELP ME!!!!!!!!!!!!!

Answers

Answer:

c

Step-by-step explanation:

the graph has a y intercept of (0, -4) and a slope of 3

the equation is y = 3x - 4

Which algebraic expression represents the phrase “seven more than half of a number”?
7 minus one-half x
Negative 7 + one-half x
One-half x + 7
Negative one-half x minus 7

Answers

Answer:

C: 1/2x +7

Step-by-step explanation:

Someone plzz help you get 10 points.
Jason wants to solve the following system using the elimination method:

x + 3y = 10
2x + y = 5

What number should the equation 2x + y = 5 be multiplied by to eliminate y?

a. 2
b. -3
c. -2
d. 3

Answers

Answer:

No single Correct answer. Both b and d will work

Step-by-step explanation:

You want to get rid of y.

The first equation has a 3 in front of the y

Therefore you would have to multiply the second equation by 3 or - 3

If you use -3 you would add the two equations

If you use 3 you would subtract the two equations.

It is either b or d. Both will give you the same answer.

- Three

  x + 3y =   10

-6x - 3y = - 15               Add

-5x = - 5                       Divide by - 5

x = -5/-5

x = 1

+ Three

x   + 3y =  10

6x + 3y = 15                   Subtract

-5x = - 5

x = -5/-5

x = 1                                Same thing.

Suppose a rope is nailed to a pole 35 meters above the ground and extended away from the base of the pole. The distance from the base of the pole to the end of the rope is 15 meters. What is the angle made by the rope and the ground?

A. 21.2∘
B. 66.8∘
C. 25.4∘
D. 64.6∘

Answers

Answer:

[tex]B. \: \boxed{66.8}[/tex]

Step-by-step explanation:

[tex]to \: solve \: this \: little \: poblem : we \:apply \: the \: pythagrean \: rule \to \\ \boxed{SOH} \boxed{CAH} \boxed{TOA} \to \\ we \: are \: been \: given : \to \\ the \: \boxed{opp }\: of \: the \: required \: angle \: = 35. \\ the \: \boxed{adj }\: of \: the \: required \: angle \: = 15. \\ now \: lets \: apply \: \boxed{TOA}\to \: \tan( \theta) = \frac{opp}{adj} \to\\ \tan( \theta) = \frac{opp}{adj} = \frac{35}{15} = 2.3333333333 \\ \theta = \tan {}^{ - 1} (2.3333333333) \\ \boxed{\theta = 66.80}[/tex]

♨Rage♨


Louis's age is three years more than twice the age of Sanchez. The sum of their ages is 39. How old are Sanchez and Louis? 3 +2s+s =39

Answers

Answer:

According to your formula, she's 12

Step-by-step explanation:

2/3 times 4/7 Plz thx

Answers

Answer:

8/21

Brainliest? :)

Step-by-step explanation:

the difference between a two-digit number and that number reversed is 18. What could that number be. List all possibility's.

Answers

9514 1404 393

Answer:

  20, 31, 42, 53, 64, 75, 86, 97

Step-by-step explanation:

The difference of 18 means the difference of digits is 18/9 = 2. Since the number you seek is the larger number, the 10s digit will be 2 more than the 1s digit. Possible numbers are ...

  20, 31, 42, 53, 64, 75, 86, 97

_____

If t and o are the tens and ones digits respectively, the relation you seek is ...

  (10t +o) -(10o +t) = 18

  9(t -o) = 18

  t - o = 2 . . . . as above

Since both t and o must be single digits, the minimum will be t=2, o=0, and the maximum will be t=9, o=7.

Answer:

10a+b=10b+a-18

9a+9b = -18

9(a+b) = -18

a+b = 18/9

a + b =2

Step-by-step explanation:

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