MATHEMATICS MIDDLE SCHOOL

I need help with this please ( I’m not sure if I should use the a^2+b^2=c^2)

Answers

Answer 1

Answer:

Answer:

Do not use $a^(2) + b^(2) = c^(2)$ that's to solve the hypotenuse of a triangle.

The difference is 31 cm³

Step-by-step explanation:

To solve the volume a cube it's a³

5.7³ = 185.193

I'm assuming to round to the nearest whole number so the difference would be

216 - 185 = 31

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Which is greater 3/7 or 0.55

Answers

3/7 as a decimal is .4285 and so on.
This is obviously less than .55

How do I solve the proportion
x+1/3 = x+5/x

Answers

$(x+1)/(3) = (x+5)/(x) \n \n 3(x+5)=x(x+1) \n \n 3x+15=x^2+x \n \n 3x+15-x^2-x=0 \n \n -x^2+2x+15=0 \n \n \boxed{\boxed{ \Delta=b^2-4ac}} \n \n \Delta=2^2-4\cdot(-1)\cdot15 \n \Delta=4+60\n \Delta=64 \n \n \boxed{\boxed{\text{X}_(1,2)= (-b\pm √(\Delta) )/(2a) }} \n \n \n \boxed{\text{X}_(1)= (-b - √(\Delta) )/(2a) = (-2-8)/(-2) = (10)/(2) = 5} \n \boxed{\text{X}_2= (-b+ √(\Delta) )/(2a) = (-2+8)/(-2) = (6)/(2)=3 }$

A construction crew has just built a new road. They built the road at a rate of 7 kilometers per week. They built 8.75 kilometers of road. How many weeks did it take them?

Answers

7 kilometers per 1 week equals 8.75 kilometers per x weeks.

7 / 1 = 8.75 / x

7 = 8.75 / x

7x = 8.75

x = 8.75 / 7

x = 1.25

It took 1.25 weeks to build 8.75 kilometers of road.

Final answer:

The construction crew would need approximately 1.25 weeks to build 8.75 kilometers of road. This is calculated by dividing the total distance by the rate of construction.

Explanation:

To find out how many weeks it took the construction crew to build 8.75 kilometers of road, we need to divide the total distance (8.75 km) by the rate at which they built the road (7 km per week). So, the calculation will be 8.75 km ÷ 7 km/week.

This is a simple division problem. Using a calculator, you will find that 8.75 ÷ 7 equals approximately 1.25.

Therefore, the construction crew would need about 1.25 weeks to build 8.75 kilometers of road. Please note, this is an approximation, and actual times may vary.

Learn more about Time Calculation here:

brainly.com/question/34080240

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How many yards are in 48 feet

Answers

16 yards are in 48 feet

There Are 16 Yards In 48 Feet

What is 7,008,267 rounded

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That's going to completely depend on the PLACE to which you want it rounded.

-- Rounded to the nearest ten, 7,008,267 becomes 7,008,270 .

-- Rounded to the nearest hundred, 7,008,267 becomes 7,008,300 .

-- Rounded to the nearest thousand, 7,008,267 becomes 7,008,000 .

-- Rounded to the nearest ten thousand, 7,008,267 becomes 7,010,000 .

-- Rounded to the nearest hundred thousand, 7,008,267 becomes
7,000,000 .

-- Rounded to the nearest million, 7,008,267 becomes 7,000,000 .

-- Rounded to the nearest ten million, 7,008,267 becomes 10,000,000 .

-- Rounded to the nearest hundred million or any higher order of
magnitude, 7,008,267 becomes zero.

7,008,267 rounded to the nearest one hundred thousands is:

8,008,000 because 7 is greater than 5.

Hope I Helped You!!!

What number should be added to the expression x^2 + 4x to change it into a perfect square trinomial?

Answers

x^2 + 4x
the number to be added is found by dividing the constant of x by 2
and squared the number
so # to be added = ( 4/2)² = 4
the perfect square trinomial is
x² + 4x + 4 = (x + 2 )² which is a perfect square trinomial
I hope this help you

he number that must be added is four because (x+2)^2=x^2+4x+4

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