Mathematics Middle School

9. Eric guessed that Troop A was going to have 23 members in 2011 when they actually had 20. How much was Eric off by in his estimate?
a.20%b. 87%c. 13% d. 15%

Answers

Answer 1

Answer:The answer is D

Step-by-step explanation:

23 - 20=3

(3 ➗ 20) *100

= 3 ✖ 5

=15%

Please make brainliest

Related Questions

A carpenter has two nails. One of the nails is 3/8 of an inch long; the other is 1/3 of an inch long. What is the difference in the lengths of the two nails in inches? 1/24, 1/12, 2/5 or 5/24?

Answers

2/5 i’m a little confused with this one but it makes more sence!!

Jayden used a Groupon at the local pizza shop. Instead of paying $15, for the pizza, he paid $12.
Haley and Arianna agree that the percent of decrease is 20% but their explanations differ. Haley says to find the 20%, you have to determine what percent of 15 is 12. Arianna thinks you have to determine what percent of 15 is 3. Who is correct?

Answers

Answer:

Ariana is correct. The difference in the price is $3. So the percentage that you saved has to equal $3.

Step-by-step explanation:

$15.00 x .10 or 10% = $1.50

$1.50 x 2 will give you 20%

$1.50 x 2 = $3.00

$15.00-$3.00 = $12.00

Answer:

Haley is the correct answer

Giving brainliest m8!!!

Answers

Answer:

i think a

Step-by-step explanation:

i thinks its a
step by step explanation

simplify –8 – 5(6c + 7)

Answers

Answer:

-30c -- 43

Step-by-step explanation:

By using the formula of PEMDAS, Parenthisis, Exponents, Multiplacation, Addtion, Subtraction, I was able to find the answer.

Hope this helps!

4+ (4²- 10) - 3²

please help!!

Answers

Answer: 75

Step-by-step explanation:

The coordinates of point R are (-6,4) The coordinates of point S are (3,4) Witch expression represents the distance, in units, between point R and Point S
A: |-6| + |3|
B: |-6| - |3|
C: |-6| + |4|
D: |-6| - |4|

Help I'm being timed!!

Answers

Answer:

A) |-6| + |3|

Step-by-step explanation:

Since the y-coordinates are the same, we need to find the distance between -6 and 3. This would thus be equal to |-6|+|3| making A the correct answer.

a(5x + 3) = b + 15x

a = (?)
b = 5ax + 3a - 15x (?)

Answers

Answer:

nice name man

Step-by-step explanation:

The answer is in the image attached. Sorry if it’s wrong.

Which of the following represents the value of 3 2/5−5/2 ?

Select one:
A. 27/4
B. 4
C. 9/10
D. 1/3

Answers

Answer: C

Step-by-step explanation: 3 2/5 - 5/2

C is the answer, Joel that helped

At the class barbecue, 25 students attended. Of those students, 15 said they wanted hamburgers. What percent wanted hamburgers?

Answers

Answer:

60% of the students wanted hamburgers

Step-by-step explanation:

just multiply

Which list is in descending order?

Answers

The answer is B because if you convert all of them to decimals you get it in that order.

help plsssssssssssssssss

Answers

I can’t se the picture... sorry!

Answer:

1. 9.512

2. 13/15

3. D and E ( i think)

4. 3

5. 36

Step-by-step explanation:

The grocery store sells 4 cans of soup for $3.60.
What is the unit price?

copy and paste the site for the photo of the work

Answers

90 cents
3.60 divided by 4
90 cents, 3.60/4 and you get the right answer

help please
Thank you!!!

Answers

Answer:

[tex]x=\frac{4}{3}[/tex]

Step-by-step explanation:

Use cross multiplication

Your answer would be 4/3= 1 1/3

Please answer fast will mark brainliest 15 points.

Answers

The answer is B, Multiplying both sides by 3/4 gives you y+56=68. Then you move the constant to the write, etc.....

Hope this helps!
B because p.e.m.d.a.s

Please help me, pic provide d

Answers

Fill in the y of the bottom equation with the top equation because it gives you what Y equals. To answer the question it would be easier to input the top equation into the bottom one. Once you then get the equation for X go to the equation on top and fill in the x to get the y. X=0 Y=2

728 increased by 30% ?

Answers

Answer:

Number 728 increased by 30% (30 percent) of its value (percentage increase) and calculated absolute change (actual difference)

Increase the number 728 by 30% of its value

Step-by-step explanation:

Answer:

946.4

Explanation:

What I do in this situation is the following steps:

1. 728 * 0.30 = 218.4

2. 728 + 218.4 = 946.4

Finding the Slope: Identify the slope. Will give 5 points if correct​

Answers

It would be -3 this is because you do rise/ run or y/x so you have 3/1 and it is a negative slope so -3

Answer:

-3

Step-by-step explanation:

Fall 3 over 1

HELP PLSSSSS FOR BRAINLST !

Answers

Answer:

Answer- A

Step-by-step explanation:

Im to lazy to write

The answer is A to your question

Marshall charges $22.00 per hour to cut yards in his neighborhood. Use the ratio of Marshall’s hours worked to the amount earned to create and complete a table to show the amount of money he will make if he works a 7-hour day.

Answers

if there are $22 made per hour for 7 hours, you’d add 22 per hour in your table. 1 hour=$22, 2 hours=$44, 3 hours=$66, and so forth. make a table of these numbers up to 7 hours.

Answer:

$$$                   hours

_________________

[    22        '        1        ]

[      44        '          2       ]

[      66        '        3         ]

[       88        '       4         ]

[        110      '         5        ]

[      132       '         6         ]

[_      154___'____7___ ]

Step-by-step explanation:

Solve for x, check the image below

Answers

Maybe 6 i am not sure
x = 8 because the radius is 6. 6 + 4 is 10 so that is your hypotenuse. from there you can just use the pythagorean theorem.

Which equation represents the relationship between the angles shown below?



3
x
=
27

3 x = 27

3
x
+
27
=
90

3 x + 27 = 90

3
x
+
27
=
180

3 x + 27 = 180

3
x
+
27
=
360

Answers

Answer:

C

Step-by-step explanation:

the line is always going to be 180 so it has to be C

Find the measurement of angle JGH

Answers

Answer:

90degrees

Step-by-step explanation:

43+x = 90

x= 90-43

x= 47

.........................

help me with this asappppppp

Answers

Answer:

875

Step-by-step explanation:

20x5=100

10x30=300

15x30=450

5x5x2=50/2

The answer is 875 hope this helps

Stewie is going to build a table and a picture frame for his living room. He decides he needs the materials shown in the table. Calculate the number of feet of lumber Stewie will need to purchase.

Answers

31.83 is your answer

10.5 ft of 1 3/4
14 ft of 3 1/2
4 ft of 2
3.33 ft of 20in

What is the value of x?
11 (9 - 2x) = -(12x + 11)

Answers

The value of x = 11.


Explanation: 99-22x=- 12x - 11


Collect like terms: -22x + 12x = -11 - 99



Divide both sides: -10x = -110 by -10

Answer:

x=11

Step-by-step explanation:

First Distribute 11 to 9 and -2x

Then distribute the negative to 12x and 11

Then calculate like terms

-22x + 12x = -11 -99 which comes out to -10x=-110

Then divide each side by -10

Your answer will then be x=11

PLEASE HLEP WITH A FREAKING IXL

Answers

Answer:

=

Step-by-step explanation:

The absolute value of -47 is 47 and the absolute value of 47 is 47. Therefore, they are equal.

I hope this helps you :D

Answer:

=

Step-by-step explanation:

i have done it before

please help me i am really bad at math

Answers

Answer:

the expression is -5 + 2. the sum is -3.

Step-by-step explanation:

what is the equation, please explain, the equation should go with the number of squares on the picture and so on

Answers

3n+1 is the formulae.

N is the pattern number. Like if u wanted to know how many squares would be at 10 just do. 3(10)+1

IF YOU HELP ME I WILL GIVE YOU BRAINLIEST

Answers

Answer:

1. transversal: (of a line) intersecting a system of lines.

2. acute angle: Acute angles measure less than 90 degrees. Right angles measure 90 degrees. Obtuse angles measure more than 90 degrees. Learn about angles types and see examples of each.

3. alternate extirior angles: When two lines are crossed by another line (called the Transversal): Alternate Exterior Angles are a pair of angles on the outer side of each of those two lines but on opposite sides of the transversal.

4. congruent: in agreement or harmony.

5. congruent figures: Congruent figures are geometric figures that have the same shape and size. That is, if you can transform one figure into another figure by a sequence of translations , rotations , and/or reflections , then the two figures are congruent.

6. isosceles triangle: In geometry, an isosceles triangle is a triangle that has two sides of equal length. Sometimes it is specified as having exactly two sides of equal length, and sometimes as having at least two sides of equal length, the latter version thus including the equilateral triangle as a special case

7. obtuse angle: An obtuse angle ...” ... An obtuse angle has a measurement greater than 90 degrees but less than 180 degrees. However, A reflex angle measures more than 180 degrees but less than 360 degrees. So, an angle of 190 degrees would be reflex.

8. right angle: an angle of 90°, as in a corner of a square or at the intersection of two perpendicular straight lines.

9. remote interior angle: Remote interior angles are angles that don't share a vertex or corner of a triangle with the exterior angle. The measure of the exterior angle equals the sum of the two remote interior angles.

10. same-side interior angles:Same side interior angles are two angles that are on the same side of the transversal and on the interior of (between) the two lines. Same Side Interior Angles Theorem: If two parallel lines are cut by a transversal, then the same side interior angles are supplementary.

11. corresponding angles: When two lines are crossed by another line (which is called the Transversal), the angles in matching corners are called corresponding angles. Example: a and e are corresponding angles. When the two lines are parallel Corresponding Angles are equal.

12. corresponding parts: corresponding parts. Sides or angles that occupy the same relative positions in similar polygons. congruent triangles. 2 triangles are congruent if and only if all pairs of corresponding sides and angles are congruent.

13. equilateral angle: In geometry, an equilateral triangle is a triangle in which all three sides have the same length. In the familiar Euclidean geometry, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°.

14. exterior angle: 1 : the angle between a side of a polygon and an extended adjacent side. 2 : an angle formed by a transversal as it cuts one of two lines and situated on the outside of the line.

15. scalene triangle: A scalene triangle is a triangle in which all three sides have different lengths. Also the angles of a scalene triangle have different measures. Some right triangles can be a scalene triangle when the other two angles or the legs are not congruent.

16. similar figures: Two figures are said to be similar if they are the same shape. In more mathematical language, two figures are similar if their corresponding angles are congruent , and the ratios of the lengths of their corresponding sides are equal. This common ratio is called the scale factor .

17. striaght figures: A line that does not curve. In geometry a line is always straight (no curves).

18. theorem: a general proposition not self-evident but proved by a chain of reasoning; a truth established by means of accepted truths.

Step-by-step explanation:

this took me a long time to answer so please give me brainliest :)

Pls help me with this number riddle....

Answers

Answer:

75

Step-by-step explanation:

Let's look at your problem shall we:

Odd number: It should end with the numbers 1,3,5,7, and 9.

The number is less than 100: It should be from the number 1-99

Sum of digits: 12

Multiple of 15: 15, 30, 45, 60, 75, and 90.

We can rule out 30, 60, and 90 because they are even.

1+5 = 6; 4+5=9; 7+5 = 12

You are left with 75.

- AlpenGlow

The answer is 75

Odd number: It should end with the numbers 1,3,5,7, and 9.
The number is less than 100: It should be from the number 1-99
Sum of digits: 12
Multiple of 15: 15, 30, 45, 60, 75, and 90.

We can rule out 30, 60, and 90 because they are even.
1+5 = 6; 4+5=9; 7+5 = 12
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