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atroni [7]
4 years ago
6

Confused can someone help

Mathematics
2 answers:
Alex4 years ago
7 0

Answer:

B.   3x^2 - 2x - 1.

Step-by-step explanation:

(f + g)x = f(x) + g(x)

= -4x + 3 + 3x^2 + 2x - 4

Adding like terms we get the answer:

= 3x^2 - 2x - 1.

svet-max [94.6K]4 years ago
7 0
<h2>Hello!</h2>

The answer is:

B. (f+g)(x)=3x^{2} -2x-1

<h2>Why?</h2>

To solve the problem, we need to add/subtract like terms. The like terms are the terms that share the same variable and the same exponent.

For example:

x^{2} +3x^{2} +5x^{3}=4x^{2}+5x^{3}

We were able to add the terms that were squared since both shares the same variable and the same exponent.

So, we are given the functions:

f(x)=-4x+3\\g(x)=3x^{2} +2x-4

Now, we are asked to calculate (f+g)(x) which is also equal to f(x) + g(x).

Then, calculating we have:

(f+g)(x)=(-4x+3)+(3x^{2} +2x-4)\\\\(f+g)(x)=3x^{2} -4x+2x+3-4\\\\(f+g)(x)=3x^{2} -2x-1

Hence, the answer is:

B. (f+g)(x)=3x^{2} -2x-1

Have a nice day!

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On average, Mackenzie drinks of an 8-ounce glass of water in 24 hours. How much
vichka [17]

Answer:

1/3

Step-by-step explanation:

If Mackenzie drinks 8 ounces of water per 24 hours, that could be written as a ratio and a fraction. 8:24, 8/24

8/24 in its simplest form is 1/3.

3 0
3 years ago
Enter the Sum: 8/6 - 6/12 =
melamori03 [73]

Answer:

8/6−6/12=56

Step-by-step explanation:

(86×22)−(612×11)=?

16/12−6/12=?

16−6/12=10/12

10÷2/12÷2=56

8/6−6/12=56

3 0
3 years ago
Find dw/ds using the appropriate Chain Rule for w=y^3-4x^2y where x=e^s and y=e^t, and evaluate the partial derivative at s=-3 a
Bad White [126]

Answer:

-2.95

Step-by-step explanation:

Given the functions w=y^3-4x^2y where x=e^s and y=e^t, to get dw/ds, we will use the chain rule for composite functions as shown;

dw/ds = dw/dx*dx/ds + dw/dy*dy/ds

dw/dx = -8xy

dx/ds = e^s

dw/dy = 3y²-4x²

dy/ds = 0 (since there are no s variable in the function)

Substituting the differentials into the formula above;

dw/ds = -8xy(e^s) + 3y²-4x²(0)

dw/ds = -8xy(e^s)

Substituting s = -3 and t = 5 into the resulting function;

dw/ds = -8(e^s)(e^t)(e^s)

dw/ds = -8(e^2s)(e^t)

dw/ds =  -8(e^-6)(e^5)

dw/ds = -8*0.00248*148.413

dw/ds = -2.945 ≈ --2.95 (to 2 dp)

4 0
3 years ago
Explain how to use the combine place values strategy to find 223-119
Irina-Kira [14]
Combine place value strategy is useful if you try to subtract a number with bigger digits from a number with a smaller digit in the same place... such as now, where 3 is smaller than 9 in the ones place. 

<span>Then we can combine two place values: 23 and 19 and subtruct those. 23-19 is 4 (you can just count up from 19 to 23), so you know that the two will give  the result of </span>04, and then you can proceed to the left: 2-1=1<span>. </span>

<span>so the final result will 104.

Hope I helped:P </span>
8 0
3 years ago
A rectangle has a length of 8 feet and a width of 6 feet if its length and width in creased by 50% each what is the area of the
VLD [36.1K]

Answer:

108 ft^2

Step-by-step explanation:

New Length: 8 * 1.5 = 12

New width: 6 * 1.5 = 9

New area = 12 * 9 = 108 ft^2

4 0
4 years ago
Read 2 more answers
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