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Murrr4er [49]
3 years ago
10

Evaluate b2c-1 for b = 8 and c = -4. A.16 B.-16 C.256 D.1/16

Mathematics
1 answer:
netineya [11]3 years ago
8 0

Answer:

To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.

Step-by-step explanation:

hope this helps you :)

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Find all rational roots for p(x)=0
Olenka [21]

Answer

C. (5/2, -1/3)

Step by step explanation

Here we use the rational root theorem.

The possible roots are

+1, +3, +5, +15, +1/2, +3/2, +5/2, +15/2, +1/3, +5/3, +1/6 and +5/6

We have to use the synthetic division to find the correct root of this function.

Here the roots are 5/2 and -1/3

Others are not roots of this function.

Let's check x = 5/2  with synthetic division.

5/2)   6   -13   13   -39   -15

-               15    5    45    15

           --------------------------

             6     2   18     6     0

Similarly x = -1/3 is also root of this function.

Answer: C. (5/2, -1/3)


8 0
3 years ago
If ƒ(x) = x + 2 and g(x) = 3x2 + 7x, find ....
Tamiku [17]

Answer:

The correct answer is option C

(f o g)(x) = 3x² + 7x + 2

Step-by-step explanation:

<u>Points to remember</u>

<u>Composite functions</u>

Let f(x) and g(x) be the two functions then (f o g)(x) can be written as

(f o g)(x) = f(g(x))

<u>To find the value of (f o g)(x)</u>

Here f(x) =x + 2  and g(x) = 3x² + 7x

(f o g)(x) = f(g(x))

 = f(3x² + 7x)

 = 3x² + 7x + 2

Therefore the correct answer is option C

(f o g)(x) = 3x² + 7x + 2

7 0
3 years ago
Multiply and simplify<br><br><img src="https://tex.z-dn.net/?f=35%20%5Ctimes%20%20%5Cfrac%7B7%7D%7B10%7D%20" id="TexFormula1" ti
Kobotan [32]

We can convert 7/10 to a decimal first.

7/10 = 0.7

Now we can multiply this problem easier.

35 x 0.7 = 24.5

6 0
3 years ago
Wyatt plays on the school baseball team. In the last 10 games, Wyatt was
Ksju [112]

Answer:

Step-by-step explanation:

21 hits / 45 at bats

7/15

5 0
3 years ago
Sam watched 10 cars drive past
Sunny_sXe [5.5K]

Answer:

3/5

Step-by-step explanation:

6 white cars out of 10 cars would be written as 6/10.

You then would simplify this fraction to 3/5.

So your answer is 6/10 or 3/5.

8 0
3 years ago
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