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Andru [333]
2 years ago
10

Use a special product pattern to evaluate

t="19^2-11^2" align="absmiddle" class="latex-formula">
I'm pretty sure I just normally solve it but I have no darn clue
Mathematics
1 answer:
Delvig [45]2 years ago
3 0

Answer:

240

Step-by-step explanation:

To evaluate 19^2 - 11^2, we have to use a special product pattern. Since this expression is in the form a^2 - b^2, we use the pattern (a + b)(a - b).

  • (19+11)(19-11)
  • (30)(8)
  • 240

Therefore, the answer is 240.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

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Which represents the explicit formula for the arithmetic sequence an=7-3(n-1)
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Answer:

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3 0
3 years ago
If f and t are both even functions, is the product ft even? If f and t are both odd functions, is ft odd? What if f is even and
Natali5045456 [20]

Answer:

(a) If f and t are both even functions, product ft is even.

(b) If f and t are both odd functions, product ft is even.

(c) If f is even and t is odd, product ft is odd.

Step-by-step explanation:

Even function: A function g(x) is called an even function if

g(-x)=g(x)

Odd function: A function g(x) is called an odd function if

g(-x)=-g(x)

(a)

Let f and t are both even functions, then

f(-x)=f(x)

t(-x)=t(x)

The product of both functions is

ft(x)=f(x)t(x)

ft(-x)=f(-x)t(-x)

ft(-x)=f(x)t(x)

ft(-x)=ft(x)

The function ft is even function.

(b)

Let f and t are both odd functions, then

f(-x)=-f(x)

t(-x)=-t(x)

The product of both functions is

ft(x)=f(x)t(x)

ft(-x)=f(-x)t(-x)

ft(-x)=[-f(x)][-t(x)]

ft(-x)=ft(x)

The function ft is even function.

(c)

Let f is even and t odd function, then

f(-x)=f(x)

t(-x)=-t(x)

The product of both functions is

ft(x)=f(x)t(x)

ft(-x)=f(-x)t(-x)

ft(-x)=[f(x)][-t(x)]

ft(-x)=-ft(x)

The function ft is odd function.

7 0
3 years ago
Chin made an error in his chart showing the multiplication of the binomial by the trinomial. Which change can be made to correct
stealth61 [152]

Answer:

The expression 6x should be 6x^2.

Step-by-step explanation:

Given is the chart of multiplication of the binomial by the trinomial.

Let's check each element in the chart:-

3x times x^2 = 3x^3

3x times 2x = 6x^2

3x times 4 = 12x

2 times x^2 = 2x^2

2 times 2x = 4x

2 times 4 = 8

From the given chart, we can identify that <u>6x should be 6x^2.</u>

Hence. option B is correct, i.e. The expression 6x should be 6x^2.

7 0
3 years ago
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A family rented a car that cost $45 per day plus $0.23 per mile. If the family rented the car for 7 days and paid $395.50 altoge
iragen [17]

Answer:

350 miles

Step-by-step explanation:

$45 ×7=315

$395.50-$315=80.50

$80.50÷$0.23=350 miles

8 0
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Intersecting lines are...
sashaice [31]
The answer should be B: lines that cross only once
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