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Goryan [66]
2 years ago
12

Your family took a road trip to Disneyland. For a part of the drive, your family drove 70 miles per hour for 4 hours. How far di

d your family drive for that portion of the trip?
Mathematics
2 answers:
marshall27 [118]2 years ago
8 0
Answer: 280 miles

Explanation:
If they’re going 70 miles every 1 hour, then just multiply that by the number of hours they travel.
70 * 4 = 280 miles in 4 hours
Yuri [45]2 years ago
3 0

Based on these calculations of driving 70 miles per hour for 4 hours, you must multiply 70 by 4.

70 x 4 = 280

For four hours of driving, the family drove 280 miles.

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COMPLETING THE SQUARE<br> X^2– 2x +
Studentka2010 [4]

Answer:

x^2 -2x + 1

Step-by-step explanation:

Think of a quadratic equation as

ax^2 + bx + c

x^2 -2x +

Comparing the two equations

a = 1 ,  b = -2,  c = ?

c becomes the missing part

Divide b by 2

-2/2 = -1

square the result

-1^2

= 1  this is what to add to get a perfect square

x^2 -2x + 1

(x - 1)^2

6 0
3 years ago
A lab technician made a 14 cm diameter hole through the middle of a cylinder that has a diameter of 20 cm and a height of 28 cm.
Step2247 [10]

Answer:

The volume of the finished cylinder is 4486.2 m^3

Step-by-step explanation:

To find the volume of the finished cylinder, we have to first find the volume of the hole (with 14 cm diameter and a height of 28 cm) and subtract it from the volume of the original cylinder (with diameter of 20 cm and a height of 28 cm).

Note: The hole is also cylindrical in shape.

The volume of a cylinder is given as:

V = \pi r^2h

where r = radius, h = height

VOLUME OF THE HOLE

The diameter of the hole is 14 cm, hence, its radius is 7 cm (14 / 2 = 7)

Its volume is:

V = \pi *7^2 * 28\\V = 4310.3 m^3

VOLUME OF THE ORIGINAL CYLINDER

The diameter of the cylinder is 20 cm, hence, its radius is 10 cm (20 / 2 = 10)

Its volume is:

V = \pi *10^2 * 28\\V = 8796.5 m^3

Hence, the volume of the finished cylinder will be:

8796.5 - 4310.3 = 4486.2 m^3

The volume of the finished cylinder is 4486.2 m^3

8 0
2 years ago
Which system of equations can be used to find the roots of the equation 12 x 3-5x=2 x 2+x+6
kirill [66]

Answer:

Option (a) is correct.

The system of equation becomes

y=12x^3-5x\\\\ y=2x^2+x+6

Step-by-step explanation:

Given : Equation  12x^3-5x=2x^2+x+6

We have to construct a  system of equations that  can be used to find the roots of the equation 12x^3-5x=2x^2+x+6

Consider the given equation 12x^3-5x=2x^2+x+6

To construct a system of equation put both sides of the given equation equal to a same variable.

Let the variable be "y", Then the equation 12x^3-5x=2x^2+x+6

becomes,

12x^3-5x=y=2x^2+x+6

Thus, The system of equation becomes

y=12x^3-5x\\\\ y=2x^2+x+6

Option (a) is correct.

   

8 0
3 years ago
Read 2 more answers
If I cut a piece of cake into 3 equal parts then each slice will be 0.333333 of the whole. If I put the three wholes back togeth
Travka [436]

Step-by-step explanation:

That is because 1/3 is not exactly equal to 0.333333. 0.333333 is a rounded number from the real number which 0.3 and the 3 goes on forever. In the image it show the the answer, in where the 3 goes on forever.

4 0
2 years ago
9 9/10 + 6 7/10 add and reduce to lowest terms
stealth61 [152]
The lowest term would be 16.6
7 0
3 years ago
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