Some students attend school 180 of the 365 days in a year. About what part of the year do they attend school?

Answers

Answer 1

Answer: If 365 is 100% and 180 is about 50% then your answer is 50%.

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Find all real numbers X such that 6x-21<=-3 AND 14x+11>=-17

Answers

$6x - 21 \leq -3$
$14x + 11 \geq -17$

D: All real x.

$\text{From the first equation:}$
$6x \leq 18$
$x \leq 3$

New domain: x is less than or equal to 3.

$\text{From the second equation:}$
$14x \geq -28$
$x \geq -2$

Thus, there is a restriction:
$D: -2 \leq x \leq 3$

Which expression is equivalent to 5 x + 10 y minus 15?

Answers

Answer:

5(x+2y-3)

Step-by-step explanation:

5x+10y-15

Factor out 5 from the expression

5(x+2y-3)

Answer:

Step-by-step explanation:

For a spinning amusement park ride, the velocity v in meters per second of a car moving around a curve with a radius r meters is given by the formula v=sqrt(ar), where 'a' is the car’s acceleration in m/s^2.a) For safety reasons, a ride has a minimum acceleration of 39.2m/s^2 . If the cars on the ride have a velocity of 14m/s what is the smallest radius that any curve on the ride may have?

b) What is the acceleration of a car moving at 8m/s around a curve with a radius of 2.5m?

Answers

The smallest radius will be, r = 5 m. And the acceleration of a car is, a = 25.6 m/s².

What is acceleration?

Acceleration is the ratio of the change of the velocity with respect to time or the rate of change of the velocity.

a.The relation between the velocity, the radius of the path, and the acceleration on the circular path is given by :

Acceleration, a = 39.2 m/s²

Velocity of the car, v = 14 m/s

The radius of the path can be calculated using the above formula i.e.

$r=(v^2)/(a)$

$r=((14)^2)/(39.2)$

r = 5 m

b. Velocity of the car, v = 8 m/s

The radius of the path, r = 2.5 m

The acceleration of the car is given by :

$a=(8^2)/(2.5)$

a = 25.6 square meter.

Therefore, the smallest radius will be, r = 5 m. And the acceleration of a car is, a = 25.6 m/s².

To know more about acceleration follow

brainly.com/question/460763

#SPJ2

a)
v=sqrt(ar)
v^2=ar
r=(v^2)/a
r=(14^2)/39.2
r=5

5 m

b)
v=sqrt(ar)
v^2=ar
a=(v^2)/r
a=(8^2)/2.5
a=25.6

25.6ms^-2

Over which interval is the graph of f(x) = –x2 + 3x + 8 increasing? (–∞, 1.5)

(–∞, 10.25)

(1.5, ∞)

(10.25, ∞)

Answers

The answer for this question is (-infinity,1.5) because
when f(x) is increasing f'(x) > 0
-2x + 3 > 0
-2x > -3
x< 3/2 or 1.5

Answer:

Step-by-step explanation:

Which is a complete list of factors of each term in the expression 15 + 20x?

Answers

Answer:

Step-by-step explanation:

Our term is 15+20x

we can divide it to : 15 and 20x

15 : it can be divided by 1 , 3 , 5 , 15

so the factors are : (1,3,5,15)

20x : to make it easy start with 20

20 can be divided by : 1 , 2 , 4 ,5 ,10 , 20

then add x :

so the factors of 20 x are :

1 , 2 , 4 , 10 , 20 , x , 2x , 4x , 5x , 10 x , 20x

Answer:

15: 1, 3, 5, 15

20x: 1, 2, 4, 5, 10, 20, x ^_^

Step-by-step explanation:

Simplify 1/2/5 please.

Answers

Answer:

0.1

Step-by-step explanation:

(1/2)/5 = 0.1

Answer:

Step-by-step explanation:

1/2 x 1/5 = 1/10

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So if 2 people were working a job that paid 7.50 an hour, and worked 42 hours a week, how much money would they make together in a year?

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-4(x+5)=-4x-20 how do you answer it

The Music teacher has a list of 128 students who have signed up for music classes The music teacher can register 6 students in each class. What is the least number of class needed for all the students to be registered?