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3 years ago

How do i answer this

Mathematics

1 answer:

Taya2010 [7]3 years ago

8 0

Answer is J because if 3 hours is $140 and 6 hours is $185 you calculate the difference. In this case $45 and divide it by 3, which is the difference between hours with those amounts, and answer is 15. And the only one with 15 is J.

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The sum of triple a number and 12.

Burka [1]

Answer:

3x+12

Step-by-step explanation:

Triple is 3 times a number which we will call “x” and sonce it is the sum, it is addition :)

7 0

3 years ago

Write the correct description beneath each of

Ksju [112]

1) Inequality

2) Equation

Step-by-step explanation:

We need to identify the correct description

1) 7x+9<25

The sign < is called greater than and is an inequality symbol

So, the given term is an Inequality

2) 2x-3=5x+12

This is an equation because we equal (=) sign in it.

Solving the equation we can find value of x.

So, the given term is an Equation

Keywords: Solving Equations

Learn more about Solving Equations at:

#learnwithBrainly

7 0

4 years ago

Researchers wanting to assess skin irritation associated with a new sunscreen developed for those with photosensitivity. They ra

vazorg [7]

Answer:

Blablabka

Step-by-step explanation:

Blablabla

3 0

3 years ago

A school has two pathways through the math program. At this school, 3/4 of students follow the first path, and the rest take t

VashaNatasha [74]

Answer:

3/5 of students who take the first path and pass

Step-by-step explanation:

* Lets explain how to solve the problem

- There are two pathways through the math program

- At this school 3/4 of students follow the first path

- The rest take the second path

- During one semester, 80% of the students who follow the first path

pass the program

- 20% of the students who follow the second path pass it

- We want to know the fraction of students who take the first path

and pass

* Lets solve the problem

∵ 3/4 of students follow the first path

∵ The rest take the second path

∴ The fraction of the rest = 1 - 3/4 = 1/4

∴ 1/4 of the students follow the second path

∵ 80% of the students who follow the first path pass the program

∵ 80% = 80/100 = 8/10 = 4/5

∵ 4/5 of the students who follow the first path pass the program

∵ 3/4 of students follow the first path

∴ 4/5 of 3/4 of the students of the first path pass

∵ 4/5 of 3/4 = 3/5

∴ 3/5 of students who take the first path and pass

3 0

3 years ago

A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 47.047.0 and

alisha [4.7K]

Answer:

0.025 = 2.5% probability that a given class period runs between 51.5 and 51.75 minutes.

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X lower than x is between c and d is given by the following formula

$P(c \leq X \leq d) = \frac{d - c}{b-a}$

For this problem, we have that:

$a = 47, b = 57, c = 51.5, d = 51.75$ . So

$P(c \leq X \leq d) = \frac{d - c}{b-a}$

$P(51.5 \leq X \leq 51.75) = \frac{51.75 - 51.5}{57 - 47} = 0.025$

0.025 = 2.5% probability that a given class period runs between 51.5 and 51.75 minutes.

4 0

3 years ago

How do i answer this​

How do i answer this