MATHEMATICS MIDDLE SCHOOL

Which expression represents the sum of 8 and twice a number?a.) 8+n8+n

b.) 8+2n8+2n

c.) 8×2n8×2n

d.) 2×(8+n)

Answers

Answer 1
Answer: La respuesta corre ta es la B

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( PLEASE HELP) The points (3,-2) (-3,-2) and (-3,6) are the vertices of a triangle. Find the perimeter of the triangle. (Hint: Use the Pythagorean theorem to find the length of the hypotenuse.

Answers

Look at the picture.

x^2=6^2+8^2\n\nx^2=36+64\n\nx^2=100\to x=√(100)\to x=10

The perimeter of the triangle:

P_\Delta=6+8+10=24

3n+8=23 answer and the work to show the answer please

Answers

Answer: n = 5

Step-by-step explanation: To solve for n, we must first isolate the term containing n which in this problem is 3n.

Since 8 is being added to 3n, we subtract 8 from both sides of the equation to isolate the 3n. On the left, the +8 and -8 cancel out and on the right 23 - 8 is 15.

So we have 3n = 15.

Now we can finish things off by just dividing both sides of the equation by 3. On the left the 3's cancel and on the right 15 divided by 3 is 5 so n = 5 and you can check your answer by plugging 5 back in for n in the original equation which is shown below in bold.

3(5) + 8 = 23 or 15 + 8 = 23.

Answer:

n = 5

Step-by-step explanation:

3n + 8 = 23

     - 8    - 8   Subtract 8 from both sides

3n = 15

n = 5      Divide both sides by 3

Quadrilaterals find m

Answers

The value of angle B is 121degree and Angle C is 59 degree, and Angle D has the same measure as the angle B

What is quadrilateral?

It is defined as the four-sided polygon in geometry having four edges and four corners and twopairs of congruent sides. It has one pair of opposite congruent angles.

We have a quadrilateral in which angle B and angle D are given.

As we know the opposite angles in the quadrilateral are same in measure.

10x - 19 = 7x + 23

3x = 42

x = 14

Angle B =  10x - 19 = 10(14) - 19 = 121 degree

Angle C =  7x + 23 = 7(14) + 23 = 121 degree

Angle A + Angle C = 360 - 121 -121 = 118

Angle C = 118/2 = 59

Thus, the value of angle B is 121degree and Angle C is 59 degree, and Angle D has the same measure as the angle B

Learn more about the quadrilateral here:

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Answer:

Measure B= 121

Measure C=59

Step-by-step explanation:

10x-19=7x+23

3x=42

x=14

plug in x to the problem and you'll find Measure B is 121 so to find Measure C you'll have to subtract 180 and 121 to get 59.

What times what equals 50000

Answers

The solution for two numbers that give the multiplication of both numbers 50000 are 100 and 500.

Used the concept of multiplication which is stated as,

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that,

The multiplication of two numbers is 50000.

Since 50000 is the multiple of 100.

So, we take the number 100.

Let us assume that, the second number is, x

For the second number, we can arrange it as,

100 × x = 50000

Divide on both sides by 100,

x = 50000/100

x = 500

Therefore, both numbers are 100 and 500.

To learn more about the multiplication visit:

brainly.com/question/10873737

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50,000 divided by 100 equals 500 and 1*5 equals 5 and add on the 4 zeros and you get 50,000 ( * means multiply

ashton is saving money to buy a new bike.he needs $120 but has only saved 60% so far how much money does ashton need to buy the scooter?

Answers

Answer:

Ashton needs $48 to buy the bike

Step-by-step explanation:

The cost of the bike is $120. In this moment Ashton has saved 60 % to convert it to money we have to multiply the cost of the bike and the percentage saved and divide it by 100 % to eliminate the percentage units.

(120 * 60)/(100)= 72

So in this moment Ahston has save $72 for the bike. Now, we just have to substract the total cost of the bike and the saved money.

120 - 72 = 48

Ashton needs $48 to buy the bike
120 x .60 =72


or in fraction form it would be  120/1 x 60/100 = 7200/100 which simplifies to 72.

So the answer would be 120- 72 = $48

mark has 312 books in his bookcases. He has 11 times as many fiction books as nonfiction books. How many fiction books does Mark have? please tell me how you got answer step by step? thank you

Answers

Answer: 286


Step-by-step explanation:

Let the number of non fiction books be 'x'

Then the number of fiction books = 11x

Total books in Mark's bookcase= 312

According to the given situation the equation will be

x+11x=312\n\Rightarrow12x=312..............[\text{combine like terms}]\n\Rightarrow\ x=26.......[\text{divide 12 on both sides}]

Hence, the number of non fiction books=26

and the number of Fiction books =11*26=286
Let number of non/fraction books =x
Then number of fiction books=11x
So, we form the equation x+11x=312
12x=312 x=26 so mark has 26*11=286 fiction books
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