Mathematics Middle School

If the perimeter of a triangle is 31 ft and two of the side lengths are 15 ft and 10 ft, what is the length of the third side?
A. 56 ft
B.25 ft
C.16 ft
D.6 ft

Answers

Answer 1

Answer:

D would be the answer

Step-by-step explanation:

31 - 15 = 16

16 - 10 = 6

Answer 2
The answer is d 15+10= 25 then 31-25=6

Related Questions

How much fabric did Daria use to make this number cube?

Answers

It’s C

294cm(squared)

PLEASE HELP. BRAINLEST IF CORRECT

Answers

Answer:

4/9

Step-by-step explanation:

find surface area of the square pyramid!!! pls i need help with explaining!!!!!

Answers

Answer:

39 square yards

Step-by-step explanation:

The base is a square, so the area is 3 x 3 = 9.

Each side is a triangle, and the formula for that is (1/2)(base)(height)

The base of each side is 3 and the height of each is 5. There are 4 of those, so it's 4 x (1/2)(3)(5) = (2)(3)(5) = 30

Add the base and sides

30 + 9 = 39

Answer:

39 yards

Step-by-step explanation:

surface area = A + [tex]\frac{1}{2}[/tex] ps

A = area of the base

p = perimeter of the base

s = slant height

the base of the pyramid is a square, all sides and angles are equal

; 3 yards

; area of a square  = l x w

; area of the base = 9 yd (A)

perimeter of the base ; 3 + 3 + 3 + 3 = 12 yd (p)

slant height = 5 yd (s)

; sub it into the formula

surface area  = 9 + [tex]\frac{1}{2}[/tex] x 12 x 5

surface area = 39 yd

-2 - -4 * -9 =
HELP I WILL GIVE BRAINLIEST!

Answers

Answer: -34

Step-by-step explanation:

Answer:

If the equation is: -2-(-4)×9= 34

Step-by-step explanation:

first distibute the negative to the four. thenmultiply it by nine then subtract 2.

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

Solve the following equation.
U + 2 = 4

Answers

Answer:

U=2

Step-by-step explanation:

This is a simple one-step algebraic equation. In algebra to solve equations, you should use the properties of equality. The properties say that an equation remains true as long as the same thing happens on both sides. For this equation, the property of subtracting should be used; this property states that the same number can be subtracted from both sides. To find U, isolate the variable by subtracting 2 from both sides. This leaves U=2.

U +2= 4
-2 -2
U = 2
2 + 2= 4

Please, help me with this question. It is due soon. Also have a great evening!

And remember if you don’t know the answer or don’t understand it and just want points don’t even bother to write a “ANSWER” down because it is irritating and annoying and it lastly wastes my time and has no help towards me!!!!

Answers

Answer:

Step-by-step explanation:

The point that represents the data in the fourth column has the coordinates: (13, 9)

How many points would be shown on a scatter plot of these data?: 5

13,9 is the answer ok I hope this helps

what angles are complementary to 3 ? select all that apply

Answers

Answer:

its angle 2

Step-by-step explanation: a complementary angle is a angle tat adds up to 90 degrees and 3 and 2 will add up to 90

it’s angle 2
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Trevyn has 26.5 pounds of birdseed. He puts 13
pounds of birdseed in his feeder each day.

How many days will go by before Trevyn runs out of birdseeds?

Answers

On the 3rd day he will not have enough to put in the feeder.
It’s 2.5, but if you round it then it would be on the third day

P.S.345 had a bake sale to raise money for the sports program. 65 brownies were sold at $1.20 each, 25 pies were sold at $4.50 and 93 doughnuts were sold at $0.75 each. The school wanted to raise a total of $300. Was the school able to reach its goal? If, not how much more does it need to raise?

Answers

Answer:

where not able to reach their goal and the sports program was able to make $260.25 and miss the mark by 39.75

Step-by-step explanation:

for the brownies 78+ for the pies 112.5 + for the doughnuts 69.75 + coming out to a total of $260.25 and they missed the mark of $300 by $39.75

Answer:

The were not able to reach their goal and they need $39.75. Hope this helps!

Step-by-step explanation:

Multiply the amount of goods by how much each thing cost.

Repeat that for each kind of good.

Add each amount together.

To find out how much more you need, subtract your starting amount form the amount you made.

On the science test, Lucy got 3 questions
wrong, each of which were worth 4 points. On
the same test, she earned 5 extra credit points.
What was the change it point value from missed
questions and extra credit? Write your answer
as an integer.

Answers

Answer:

-7

Step-by-step explanation:

She lost 12 points, 3 * 4 = 12, and she gained 5 points, so -12 + 5 = 5 - 12 = -7

Answer:

-7

Step-by-step explanation:

What is the mean average of hours completing homework each week based on the table below:
Number of hours each week
completing homework | 1 | 2 | 3 | 4 | 5
# of students | 6 | 20 | 15 | 12 | 7

Answers

Answer:

12

Step-by-step explanation:

Add 6+20+15+12+7 and you get 60 then by divide by 5 and you get 12 that is your answer.

The answer to your question is “the mean is 12.”

I picked a answer for this but i don't know if it is right can you check?

Answers

Answer:

yes its absolutely correct ☺️

good job

i can tell you that you are correct good job

Mom and Dad alien are BOTH hybrid for donut body. A bacon body is recessive. Fill in the
Punnett square below using the letter "B". Then answer the questions below.

PLS MAKE A PUNNETT SQUARE

Answers

ANSWER:
B b
B BB b
B BB b

Thomas collected the data in table 1 to answer a statistical question. witch statistical question dose the data in table 1 answer?

Answers

Where is the statistical question

I’m sorry but I don’t see anything. If there’s supposed to be an image attached, please attach it atain because there is nothing.

X=5 then x + 6

Pls help

Answers

Answer:

11

Step-by-step explanation:

5+6 11

Answer:

11

Step-by-step explanation:

If x = 5 , then

x + 6

substitute the value of x

5 + 6

11

Which correctly compares (528 × 65) – 85 and (528 × 65) – 75 without doing any calculations?
A. (528 × 65) – 75 < (528 × 65) – 85
B. (528 × 65) – 85 = (528 × 65) – 75
C. (528 × 65) – 85 > (528 × 65) – 75
D. (528 × 65) – 85 < (528 × 65) – 75
Pls help!

Answers

Answer:

D.

Step-by-step explanation:

I don't actually know I'm guessing.

It is D

528 X 65 -85 =34,235

528 X 65 -75 = 34.245

34,235<34,245

1.- The Tenth-grade classroom has a rectangular shape whose length measures 4m more than the width.

a) Calculate the width and length of the rectangular classroom, knowing that its perimeter is 28m.
b) Calculate the area and the number of desks that must fit in the classroom to comply with the biosecurity standards of 1.5m of social distancing.

Answers

Step-by-step explanation:

I don't know I don't know I don't know I don't know I don't know I don't know I don't know I don't know I don't

The distance between two points on a map is 7 cm. The scale of the map is 1 : 40 000. Find the actual distance between the two points in km

Answers

Answer:

2.8km

Step-by-step explanation:

7cm=1

?=40 000

7cm×40 000=280 000cm

=2800m

=2.8km

2.8K .. GOOD LUCK !!!

I need some help guys

Answers

Answer:752+136=888

Step-by-step explanation:

Answer:

752+136=888

Step-by-step explanation:

Using the tip, (4+5=9 is equal to 5+4=9), just switch the two numbers that add up to 888. So instead of 136+752=888, do 752+136=888 because both of those add up to the same number.

Hope this helps :)

I need help, please!

Answers

gradient of 23 ‍♀️sorry if i’m wrong
hey i hope you get the right answer

Plz help will be marked BRAINLIEST !!!

Answers

Answer:

Angle 1 : h

Angle 2 : k

Step-by-step explanation:

Two angles are called complementary if their measures add to 90 degrees

Angle i and angle f are complementary angles as they add up to 90 degrees

BRAINLIEST IF CORRECT

Answers

Answer:

Step-by-step explanation:

For this you just find the average of the 3 numbers

To find the average you add all of the numbers together and divide by the number of numbers

4+1+9

=14

14/3

=4 and 2/3

Since you can't have 2/3 of a cow, round up

5 cows (on average)

Answer:

5

Step-by-step explanation:

HELPPPPPP QUICKKKKKHELPPPPPP QUICKKKKK

Answers

√99 is an irrational number

D is the answer because it’s irrational

If it snows on a given day, the probability that it snows the next day is 13. If it doesn’t, the probability that it snows the next day is 16. The probability it will snow tomorrow is 25. What is the probability that it will snow the day after tomorrow?

Answers

Answer:

Step-by-step explanation:

I think it might be 1/15

The distance between two points is 5. The coordinates of the points are:

(2, 1) and (x, 5). There are 2 possible values for x. Find these values.

The smaller value of x = ?

The larger value of x = ?

Answers

Answer:

d = √(x_2 - x_1)² + (y_2-y_1)²

5 = √(x - 2)² + (5-2)²

x = -3 or x =6

Step-by-step explanation:

d = √(x_2 - x_1)² + (y_2-y_1)²) - that is the distance formula

d = 5

x_2 = x

x_1 = 2

y_2 = 5

y_1 = 1

5 = √(x - 2)² + (5-2)²

x = -3 or x =6

Hoped this helped!

You can search about it you will find the answer.

Help with math earn 10 points

Answers

Answer:

Step-by-step explanation:

infinite and no solutions

Answer: System: y = 2x + 1 & y = -3x + 1 are infinite and no solutions. (In order)

Step-by-step explanation: Same goes for System 2: y = 2x + 1 & y = 2x - 7 are infinite and no solutions. (In order)

Hope this helps!

Find the volume of the sphere. Include proper units:

Answers

Answer:

14137.17

Step-by-step explanation:

14137.17 is the correct answer I checked twice

Help me with math earn 10 points

Answers

Answer:

Option number 1

Step-by-step explanation

Answer: option 3

Step-by-step explanation:

Which set of coordinates satises the system of equations y = x − 3 and y = -2x + 1? A. A B. B C. C D. D

Answers

Answer:

a. your welcome I hope your day goes wonderfully

It’s A hope it helps you!!

A bakery offers a sale price of $3.45 for 6 muffins. What is the price per dozen?

Answers

Answer:

6.90  for 12

Step-by-step explanation:

a dozen is 12 muffins so multiply by 2

3.45 for 6

2*3.45  for 2*6

6.90  for 12

Answer:

6.90

Step-by-step explanation:

3.45 by 6 = 0.575

multiply 0.575 by 12

which equals 6.90

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