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3 years ago

What is -23-x-x+16-2

Mathematics

2 answers:

Irina18 [472]3 years ago

7 0

Answer:

-9-2×

Step-by-step explanation:

-23-×-×+16-2

-23+14-×-×

-9-2×

iragen [17]3 years ago

4 0

Answer:-9-2x

Step-by-step explanation:

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7. Marcy is taking part in a summer movie club. She will

goldenfox [79]

Answer:

The equation that represents the relationship between 'y' the total points, and 'x' the number of movies is option A;

A y = 3·x

Step-by-step explanation:

The information required in the question is an equation that represents the the relationship between the number of movie attended and the total number of points Marcy has given that she earns a fixed amount of points for attending each movie

The number of points she will earn for attending each movie = 3 points

The total number of points she will earn 'y' when she attends 'x' number of movies is given as follows;

y = 3 + 3 + 3 + ... + 3, 'x' number of times, and we can write

$y = \sum\limits_{i =1}^x 3 = 3 \times x$

Therefore the equation that represents the relationship between 'y' the total points, and 'x' the number of movies is y = 3·x.

4 0

3 years ago

An airplane has a maximum capacity of 118 passengers. The flight attendant has loaded 40 passengers. Which inequality represents

Alexeev081 [22]

Answer:

Problem 1.

If the plane can still load p no. of passengers , then,

p ≤ 78

Problem 2

With 6 servings of wings, Sarah can serve maximum 2 burgers.

Problem 3

x > 10 [where the passenger travels x miles by either Uber or Lift car]

Step-by-step explanation:

Problem 1

Let, the no. of passengers that the plane can still load is p.

Then, according to the question,

p ≤ (118 - 40)

⇒ p ≤ 78

Problem 2

Let, Sarah can serve x no. of wings and y no. of burgers.

Then according to the question,

6x + 3y < 45 ------------(1) and

x ≥ 4 --------------(2)

Now, for 6 servings of wings or for x = 6,

from (1)

3y < 9

⇒ y < 3

So, with 6 servings of wings, Sarah can serve maximum 2 burgers.

Problem 3

For, going x miles the Uber driver charges,

$ ( 3 + 0.5x)

while the Lift driver charges,

$ ( 2 + 0.6x)

So, the cost of Lift is greater than Uber when

2 + 0.6x > 3 + 0.5x

⇒0.1x > 1

⇒x > 10

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4 years ago

Find all extrema in the interval 0 2pi if y=x+sinx

ale4655 [162]

Answer: y = x + sin(x) y' = 1 + cos(x) Setting y' to zero, we have: y' = 0 1 + cos(x) = 0 cos(x) = -1 x = pi, on the interval [0, 2pi] y'' = -sin(x) When x = pi, y'' = -sin(pi) = 0 Thus, we have an extremum at x = pi, but it is neither a local maxima nor a local minima. Notice as well that y' = 1 + cos(x) >= 1 for all real values of x. Thus, y is an increasing function. This implies that on the interval [0, 2pi], the absolute minima is at x = 0, where y = 0 + sin(0) = 0; and the absolute maxima is at x = 2pi, where y = 2pi + sin(2pi) = 2pi.

4 0

3 years ago

If a point in quadrant IV is reflected in the y-axis, its image will lie in quadrant:

Leni [432]

Answer:

Option D is correct.

Step-by-step explanation:

A plane mirror shows that the image formed by it is of same size as that of object, same distance as that of object and same orientation and laterally inverted.

So, when a point is in IV quadrant and reflection is from Y axis, the image is in III quadrant.

6 0

3 years ago

What is the value of (−) if ()=−−?

Irina-Kira [14]

Answer:

What do you mean?

Step-by-step explanation:

6 0

3 years ago