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Vaselesa [24]
3 years ago
14

Evaluate the polynomial 6x - y for x= -3 and Y=2. A.15 B. -20 C.4 D.-16

Mathematics
1 answer:
ra1l [238]3 years ago
6 0
I think the answer is B.
6(-3)=-18, and y=2
so 6x-y=-18-2=-20
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1) f(x) = 2x + 4, g(x) = 4x2 + 1; Find (g ∘ f)(0).
Sholpan [36]

Answer:

<h2>(g \: \circ \: f)(0) = 17</h2>

Step-by-step explanation:

f(x) = 2x + 4

g(x) = 4x² + 1

In order to find (g ∘ f)(0) we must first find

(g ° f )(x)

To find (g ° f )(x) substitute f(x) into g(x) that's for every x in g(x) replace it with f(x)

That's

<h3>(g \: \circ \: f)(x) = 4( ({2x + 4})^{2} ) + 1 \\  = 4(4 {x}^{2}  + 16x + 16) + 1 \\  =  {16x}^{2}  + 64x + 16 + 1</h3>

We have

<h3>(g \: \circ \: f)(x) =  {16x}^{2}  + 64x + 17 \\</h3>

Now to find (g ∘ f)(0) substitute the value of x that's 0 into (g ∘ f)(0)

We have

<h3>(g \: \circ \: f)(0) = 16( {0})^{2}  + 64(0) + 17 \\</h3>

We have the final answer as

<h3>(g \: \circ \: f)(0) = 17</h3>

Hope this helps you

8 0
3 years ago
Please help I was out this day and this assignment is late
sammy [17]

Answer:

10. ( 7x + 2 ) × ( 5x + 1 )

Step-by-step explanation:

1. 35x² + 10x + 7x + 2

2. 5x × ( 7x + 2 ) + 7x + 2

3. ( 7x + 2 ) × ( 5x + 1 )

4 0
3 years ago
Read 2 more answers
There are 15 students on a yearbook committee. 40% of the students are females. How many students on the committee are males?
Andrei [34K]

Answer:

9 students on the committee are males

Step-by-step explanation:

As per the statement:

There are 15 students on a yearbook committee.

⇒Total students on a yearbook committee = 15

⇒\text{Male students} +\text{Female students} = 15     ....[1]

It is given that:

40% of the students are females

⇒\text{Female students} = \frac{40}{100} \cdot 15 = 6

Substitute in [1] we have;

\text{Male students} + 6 = 15

Subtract 6 from both sides we have;

\text{Male students}= 9

Therefore, 9 students on the committee are males

8 0
3 years ago
Read 2 more answers
Solve for x. 7x-3/8 = 6x-5/8 x=1 , x= -1 , x= 1/4 , X= -1/4.​
Contact [7]

Answer:

-1/4

Step-by-step explanation:

5 0
3 years ago
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A car is traveling on a highway. The distance (in miles) from its destination and the time (in hours) is given by the equation d
qaws [65]
The slope would be -65 and this would indicate the the car is going 65 miles per hour, as it is being subtracted from the distance.
Your answer would be C
6 0
3 years ago
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