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3 years ago

Please help this is for rotc it's due at 6

Mathematics

1 answer:

Gnom [1K]3 years ago

5 0

Answer:

UK, Egypt, India, the Philippines, Colombia,

Step-by-step explanation:

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Find three consecutive even integers such that the sum of the squares of the first two is four less than twice the square of the

velikii [3]

Answer:

the three consecutive even integers are -2, 0, 2

Step-by-step explanation:

Let the first even integer = n

Let the second even integer = n + 2

Let the third even integer = n + 4

From the given statement, we form the equation below

(n²) + (n + 2)² + 4 = 2(n + 4)²

Expand this equation;

n² + (n + 2)(n + 2) + 4 = 2(n + 4)(n + 4)

n² + n² + 2n + 2n + 4 + 4 = 2(n² + 4n + 4n + 16)

2n² + 4n + 8 = 2(n² + 8n + 16)

2n² + 4n + 8 = 2n² + 16n + 32

collect like terms together;

2n² - 2n² + 4n - 16n = 32 - 8

- 12n = 24

-n = 24/12

-n = 2

n = -2

Second integer = n + 2

= -2 + 2 = 0

Third integer = n + 4

= -2 + 4

= 2

Therefore, the three consecutive even integers are -2, 0, 2

6 0

3 years ago

Evaluate <br> 2s+4t for s=3 and t =-2

Maksim231197 [3]

Answer:

-2

Step-by-step explanation: All you have to do is insert the s and t value they gave you into the equation.

2s + 4t = ?

2(3) + 4(-2) = ?

6 + (-8) = ?

= -2

7 0

3 years ago

An English professor determined the mean of her final exam scores to be 78 with a standard deviation of 6.3. Find the minimum an

Morgarella [4.7K]

Solution: We are given:

$Mean =78, Standard-deviation =6.3$

We know that a usual values of the test scores falls within 2 standard deviation from the mean.

Therefore, the minimum usual test score is:

$Mean - 2 Standard-deviation$

$78-2 \times 6.3$

$78-12.6$

$65.4$

The maximum usual test score is:

$Mean + 2 Standard-deviation$

$78+2 \times 6.3$

$78+12.6$

$90.6$

Therefore, the minimum and maximum “usual” values of the test scores are:

65.4 and 90.6

5 0

3 years ago

Read 3 more answers

BRAINLIESTTT ASAP! PLEASE HELP ME :)

kumpel [21]

The correct answers are B and D.

A is false because, even though it's true that 4 points are not necessarily on the same line, it is not required that they are collinear in order for them to be coplanar.

B is true: two points always lie on the same line (and thus also in infinite same planes), but four points are not always coplanar

C is false. As a counterexample pick the four points (0,0, 0), (1, 0, 0), (0, 1, 0), (0, 0, 1).

D is true: two points are always on the same line, three points always lie in a common plane, but 4 points are not necessarily coplanar.

8 0

3 years ago

The fair will be traveling to a place that uses the metric system. They received directions to their next stop, but they are in

MariettaO [177]

Answer:

2x - 0.4x ;

8x/5 ;

Yes

Step-by-step explanation:

Let number of miles = x

Arlene:

Double number of miles = 2 * x = 2x

Subtract 20% of the result :

2x - 20% of 2x ;

2x - 0.4x

Raul:

Divides Number of miles by 5 ; x / 5

Multiplies result by 8 ;

8 * (x/5) = 8x /5

To know if expressions are equivalent :

Let x = 10 miles

Using Arlene's expression:

2x - 0.4x

x = 10

2(10) - 0.4(10) = 16

Using Raul's expression :

8x / 5

(8*10) / 5

80/5

= 16

Since they give the same result, we can conclude that the expression are equivalent

5 0

3 years ago

Please help this is for rotc it's due at 6 ​

Please help this is for rotc it's due at 6