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s344n2d4d5 [400]
3 years ago
14

Evaluate the piecewise function below for f(1):

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
3 0

We need to find f(1)

f(1) means x=1

Now we look at the three inequalities and choose the one where x=1 satisfies

x<=-1 , -1<x<1  and x>=1

x=1 satisfies the inequality x>=1

so we use the third function to find f(1)

f(x) = 2x^2 + 3

We plug in 1 for x and find f(1)

f(1) = 2(1)^2 + 3= 2 + 3 = 5

f(1) = 5

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Sydney invests money in an account paying a simple interest of 5.2% per year. If no
Scorpion4ik [409]

Answer:

She should multiply her current balance by 1.052.

Step-by-step explanation:

Her investment is an account with a simple interest of 5.2% per year.

So in one year, she will have 100% + 5.2% = 105.2% of her initial amount. To find the multiplier, we divide by 100%. So

105.2%/100% = 1.052

She should multiply her current balance by 1.052.

4 0
3 years ago
Sarah sells beaded necklaces she makes a profit of $4 on every necklace she sells which table represents the profit Sarah makes
Bogdan [553]

Answer:

<u>The correct table is A.</u>

Correct statement and question:

Sarah sells beaded necklaces she makes a profit of $4 on every necklace she sells which table represents the profit Sarah makes.

A.

Necklaces Sold Profit $

 4                           16

 6                           24

 8                           32

10                          40

B.  

Necklaces Sold Profit $

 4                           8

 6                           10

 8                           12

10                          14

C.

Necklaces Sold Profit $

 4                           4

 6                           8

 8                           12

10                          16

D.

Necklaces Sold Profit $

 4                           16

 6                           20

 8                           24

10                          28

Source:

North Carolina Practice Test

Step-by-step explanation:

If Sarah makes a profit of $ 4 on every necklace she sells, then:

4 necklaces = 4 * 4 = $ 16

6 necklaces = 6 * 4 = $ 24

8 necklaces = 8 * 4 = $ 32

10 necklaces = 10 * 4 = $ 40

<u>The correct table is A.</u>

6 0
3 years ago
Instructions: Drag each tile to the correct location on the algebraic problem. Not all tiles will be used.
jolli1 [7]
The steps involving properties of equality are shown in painful detail.

For Step 4, you add 7 to both sides of the equation (with the goal of cancelling the -7 on the left). So you have
&nbsp; 6x -7 +7 = 12 +7 . . . . . . . showing 7 added to both sides

In the next step, this is simplified to the way you might have written it to start with:
&nbsp; 6x = 19

There should be no confusion in any of this. All solutions of all equations make use of the properties of equality like this. Addition is used to cancel subtraction, division is used to cancel multiplication. (Root-taking cancels powers, and vice-versa; inverse trig functions cancel trig functions; and so on.)

6 0
3 years ago
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I don't understand how to do this
Masteriza [31]
The answer to the question

6 0
3 years ago
|x−12| =4<br> please help and show steps I have this due today!
s2008m [1.1K]

Answer:x=8

Step-by-step explanation:

You have to subtract 12 to 4

So x=8

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3 years ago
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