MATHEMATICS MIDDLE SCHOOL

Solve 2s3 – 4r2 if r = 1 and s = 5.

Answers

Answer 1
Answer:

The required answer for the given expression is 246.

What is an expression?

An expression is a number, or a variable, or a combination of numbers and variables and operation symbols.

The given expression is,

2s³ – 4r²

For  r = 1 and s = 5, put the values of  r and s in the given expression we get,

2s³ – 4r² = 2(5)³ – 4(1)²

⇒  2s³ – 4r² = 2*125 – 4

⇒  2s³ – 4r² = 250 – 4

⇒  2s³ – 4r² = 246

which is he required value of the given expression.

Thus, the required answer for the given expression is 246.

To learn more about expressions :

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Answer 2
Answer: 22 because you use PEMDAS 

Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Related Questions

nate runs 8 miles each week write an expression for the number of miles he runs in ‘n’ weeks find the number of miles neutrons in five weeks
What is the solution to. : 6x - 4 = 2x + 24
Please Help!: 36x = $45.00
How is 47.3 divided by 1 tenth equal to the product 47.3 times 0.1
In a survey of 3,000 people who owned a certain type of car, 1,050 said they would buy that type of car again. What percentage of the people of the people surveyed were satisfied with the car?

A park is in the shape of a rectangle 8 miles long and 6 miles wide. How much shorter is your walk if you walk diagonally across the park than along two sides of it?

Answers

8 + 6 = 14

Find the hypotenuse of the triangle.

a^2 + b^2 = c^2

Where 'a' and 'b' are the two legs and 'c' is the hypotenuse.

Plug in what we know:

6^2 + 8^2 = c^2

Simplify the exponents:

36 + 64 = c^2

Add:

100 = c^2

Find the square root of both sides:

c = 10

14 - 10 = 4

So walking diagonally across will be 4 miles shorter than walking around the edges.

this would be a right triangle with the legs being 8 miles and 6 miles. using the Pythagorean theorem, the hypotenuse would be 10 miles long. therefore, he would be walking a total of four miles less if he walked diagonally.

Convert 4.15 to a fraction in lowest terms

Answers

4(3)/(20)
4.15
= 4+ 0.15
= 4+ 15/100
= 4+ 3/20
= 80/20+ 3/20
= 83/20

The final answer is 83/20~

Guest at a pizza party are seated at three tables. The small table has 5 seats and 2 pizzas. The medium table has 7 seats and 3 pizza. The large table has 12 seats and 5 pizza. The pizza at each table are shared equally. At which table does a guest get the most pizza?

Answers

You get the most pizza at the medium table because you divide 3 by 7 and get .43 after simplifying the decimal.

Hope this helps!

Final answer:

The answer to the student's question is the medium table, where a guest gets the most pizza after dividing the number of pizzas by the number of seats.

Explanation:

To determine which table a guest will receive the most pizza, we need to divide the number of pizzas by the number of guests at each table. This will give us the amount of pizza per guest at each table.

For the small table: 2 pizzas ÷ 5 seats = 0.4 pizzas per guest.

For the medium table: 3 pizzas ÷ 7 seats = 0.43 pizzas per guest.

For the large table: 5 pizzas ÷ 12 seats = 0.42 pizzas per guest.

So, a guest sitting at the medium table gets the most pizza.

Learn more about Pizza Division here:

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At Marvin's Motorcycle's a pair of gloves sell for $85. Marvin purchases them from the manufacturer for $50. What is the percent markup on the gloves?

Answers

Answer:

60% more.

Step-by-step explanation:

So you know 50 divided by 2 is 25, so add that to 50 to get 75. then you need to add ten more so you divide 50 by 5. so then 25+5 is 30 and 30 is 60% of 50 so it is marked up by 60% more.

Answer:

Maybe 58.82%

Step-by-step explanation:

50*100= 5000, 5000/85= 58.82

What is the value of (16^3/2)^1/2

Answers

Lets see,

16^{{3/2}^(1/2)}=16^(3/2 \cdot 1/2)=16^(3/4)=2^(3)=8.

Hope this helps.

find the slope of the line through the given pair of points, if possible. Based on the slope, indicate whether the line through the points rises from left to right, falls from left to right, is horizontal, or is vertical (-7,-9) and (-5,-8)

Answers

easy peasy
slope=(change in rise)/(change in run)
aka
slope between points (x1,y1) and (x2,y2) is
slope=(y2-y1)/(x2-x1) since y is rise/up and x is run/leftright

points

(-7,-9) and (-5,-8)
x1=-7
y1=-9
x2=-5
y2=-8
remember minusing a negative means addin a positive
slope=(-8-(-9))/(-5-(-7))=
(-8+9)/(-5+7)=1/2

slope=1/2

positive slopes go from bottom left to top right

since it is less than 1
it is more horizonal than vertical
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