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V125BC [204]
3 years ago
6

A function f(x) = x^2 - 4 has a domain as the set of integers

Mathematics
1 answer:
mel-nik [20]3 years ago
5 0

Answer:

8

Step-by-step explanation:

f(x) = (x+2)(x-2)

Substituting x=1 into f(x):

f(1) = 3*-1

     = -3

Since -2 & 2 touch the x-axis, 1 has a negative y value, 2 has a y value of 0, and all values from 2, are positive.

Hence,

3, 4, 5, 6, 7, 8, 9, 10 are all positive. Therefore, the answer is 8

This can be confirmed with a graph, as attached below.

<em>Feel free to mark this as brainliest! :D</em>

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.<br> Use the Distributive Property to simplify the expression.<br><br> 3 × 72
alukav5142 [94]

Step-by-step explanation:

(3 × 70) + (3 × 2)

210 + 6 = 216

8 0
3 years ago
Question 1. If the perimeter of Rectangle ABCD is 34y+2. What is the width?
Savatey [412]

Answer:

Question 1. If the perimeter of Rectangle ABCD is 34y+2. What is the width?

Question 2. What is the area of Rectangle ABCD in terms of y?

Question 3. If the perimeter of the rectangle is 70. What is it’s area?

Question 4. What are the length and width of the rectangle?

6 0
3 years ago
henry and his brother each start a savings account. henry begins with $200 and deposits $25 each month. his brother begins with
zlopas [31]

Answer:

Henry after 2 months: 250

His brother after 2 months: 220

Step-by-step explanation:

Henry started with $200 so add $25 twice (for 2 months) and get $250 dollars after 2 months.

His brother started with $150 so add $35 twice and get $220 dollars after 2 months

4 0
3 years ago
Simplify -3y+2x-5y-7x
Sphinxa [80]
<h3><em><u>Simplify -3y+2x-5y-7x is:</u></em></h3><h3>-8y - 5x</h3>

<em><u>Solution:</u></em>

<em><u>Given that, we have to simplify</u></em>

-3y + 2x-5y-7x

We can simplify the above expression by combining the like terms

Like terms are terms that has same variable ( with same exponent) with same or different coefficient

From given,

-3y + 2x-5y-7x

Here, like terms are -3y and -5y

And 2x and -7x

Group the like terms

-3y-5y+2x-7x

Combine the like terms

-8y -5x

Thus the given expression is simplified

6 0
3 years ago
Write and solve a proportion to answer the question.<br><br> 36 is 0.9% of what number w?
USPshnik [31]
The question can be written out like this:
36 = 0.009x

Multiply both sides by 1,000:
9x = 36,000

Divide both sides by 9:
x = 4,000
7 0
3 years ago
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