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3 years ago

What is Metric Conversions?

1 answer:

7 0

Metric Conversions: Meters, grams and liters are considered the base units of length, weight and volume, respectively. ... To convert a bigger unit to the smaller unit, we move left to write, we multiple by 10. Moving right to left, from smaller unit to bigger, we divide by 10.

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Rachel says she is 5 feet tall. Her friend measured her height as 60 inches.Determine if these two measurements are equal

zhenek [66]

They are. There are 12 inches in a foot. 5x12 does equal 60 so they are equal.

5 0

3 years ago

Question 8 of 10

AleksandrR [38]

B. A worker with 40 hours of training is paid $1700 per month.

4 0

3 years ago

The position of a passenger train that is traveling at an initial speed of 14 feet per second and continues to accelerate can be

salantis [7]

Solving the system of equations, it is found that a viable time that the trains are side by side is given by:

B. 15 sec

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the equations are:

$y = 14t^2$

$y = 130t + 1200$

They will be side by side when:

$14t^2 = 130t + 1200$

$14t^2 - 130t - 1200 = 0$

It's solution is a quadratic function with coefficients a = 14, b = -130, c = -1200, hence:

$\Delta = (-130)^2 - 4(14)(-1200) = 84100$

$x_1 = \frac{130 + \sqrt{84100}}{28} = 15$

$x_2 = \frac{130 - \sqrt{84100}}{28} = -5.71$

Time is a non-negative measure, hence option B is correct.

More can be learned about a system of equations at brainly.com/question/24342899

5 0

2 years ago

Sally works 40 hours a week and makes $30 an hour, but her kids are in child care each day and the day care center charges her $

Lapatulllka [165]

Answer:

Sally will earn $21.25 per hour after she removes day care charges from her total earnings.

Step-by-step explanation:

Hey there!

Let's start by solving for how much money that Sally earns per week.

To find this value, we will find the product of 40 hours per week and 30 dollars per hour.

$40\times30=1200$

We now know that Sally makes $1,200 a week without deducting the daycare charges per day.

However, we know we need to deduct 70 dollars for each day that Sally works. Since she works for five days a week, we will find the product of 70 dollars per week and five days a week.

$70\times5=350$

Therefore, the day care charges $350 per week.

Finally, we need to subtract the day care charges from the amount of money that Sally earns to find how much she actually makes in a week.

$1200-350=850$

Therefore, for forty hours of work that Sally works each week, she earns $850.

However, we are not done. The question asks us to find how many dollars <u>per hour</u> does she actually make? Therefore, we need to find the quotient of 850 dollars and 40 hours per week.

$\displaystyle \frac{850}{40}=21.25$

Therefore, Sally earns $21.25 each hour after deducting day care costs.

6 0

3 years ago

How does (1) - (-9) = 10

jonny [76]

Hi (1)-(-9) = 10 Yes it's equal two because we know that -×- = +. So now you have 1+9 = 10 Got it ? If you have any further question please let me know.

8 0

3 years ago