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3 years ago

What is 1 4/5 as a decimal

2 answers:

6 0

Divide 4 by 5. You will get 0.8 . So, your answer will be 1.8 because you already have a whole number, you will add the decimal to the whole number and you would get 1.8 .

Travka [436]3 years ago

4 0

You divide 5 into 14 you will get 2.8

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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

This writing prompts is hard

Solnce55 [7]

A.) Simplifying the equation would lead you to 15x^2-3x+9

b.) You know your answer is correct because you're adding the two polynomials together. 9x^2+6x^2 is 1tx^2. Now you have 2x-5x and since the negative is bigger, you get -3x. Then 5+4 is 9. You have no like terms therefore your answer is 15x^2-3x+9

7 0

3 years ago

What is the fourth term of the arithmetic sequence described by the explicit formula an = 2 + (n - 1)25?

Elis [28]

Answer:

Step-by-step explanation:

plug in 3 if we're going by 0,1,2,3

2+ (3-1)25

2+50

3 0

3 years ago

Priscilla decides to order a delivery from the local sandwich shop. her order comes to $12.74 and there is a $2.30 delivery char

Tema [17]

The total is $15.04 because you must add 12.74 + 2.30

5 0

3 years ago

Read 2 more answers

Meranda works for 7 hours at 10.25 per hour how much does she earn ?

frosja888 [35]

You take how much she makes and multiply it by the hours she works
10.25*7
=71.75

5 0

3 years ago