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3 years ago

How do you convert units within a measurement system?

1 answer:

5 0

To convert among units in the metric system, identify the unit that you have, the unit that you want to convert to, and then count the number of units between them. If you are going from a larger unit to a smaller unit, you multiply by 10 successively.

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Please help! Thanks in advance.

alukav5142 [94]

In this problem, we need to plug in the given x values for $f(x)=0$ and find a and b.

When we plug in 1, we get: $2 \times {1}^{4} - 5 \times {1}^{3} - 14 \times {1}^{2} + a \times 1 + b = 0$

Simplify:
$2 - 5 - 14 + a + b = 0$
$- 17 + a + b = 0$
$a + b = 17$

We got our first statement about the values of the variables. If we find one more we can find those 2 variables.

We have another given root: 4.

Plug it in:
$2 \times {4}^{4} - 5 \times {4}^{3} - 14 \times {4}^{2} + a \times 4 + b = 0$
$512 - 320 - 224 + 4a + b = 0$
$- 32 + 4a + b = 0$
$4a + b = 32$

Now we have our second one. We can combine them:
$a + b = 17 \\ 4a + b = 32$

I use elimination method which is easier here.

Multiply the top equation by -1: $- a - b = - 17 \\ 4a + b = 32$

Add them up:
$3a = 15$

Simplify:
$a = 5$

Now we have a, we can plug in one of those equations to find b:
$5 + b = 17$
$b = 17 - 5$
$b = 12$

So, the answers are $a=5$ and $b=12$ .

6 0

3 years ago

An airplane is preparing to land at an airport. It is 50400 feet above the ground and is descending at the rate of 3000 feet per

Dovator [93]

Answer:

let t = no of minutes when they are at the same altitude

52200 - 3300t = 2500t

52200 = 3300t + 2500t

52200 = 5800t

t = 52200/5800

t = 9 minutes they will be at the same altitude

The altitude:

9*2500 = 22500 ft

Check on other train

52200 - 9(3300) =

52200 - 29700 = 22500 ft

3 0

2 years ago

The point (17,−9) is translated to the point (6,2). Select the description of the translation.

Novay_Z [31]

Is there any picture to this?

3 0

3 years ago

3n+22 +2n+38=180 m angle

s344n2d4d5 [400]

3n+2n= 5n
22+38=60
180-60=60
60=5n
n=12

8 0

3 years ago

HELP PLS !!I WILL GIVE BRAINLIEST!!!

Yuliya22 [10]

Step-by-step explanation:

1+2√2 ²π = 9+4√2 π cm² thats my answer

6 0

3 years ago