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Cerrena [4.2K]
3 years ago
8

I need help ASAP! picture below is what I need​

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
6 0

Answer:

Evaluating the piecewise function when X =3, we get f(3) = 7

Step-by-step explanation:

Given the following piecewise function

f(x)= { 2x+1; where x > 0

         -3 when x ≤ 0

Evaluate the function when X = 3

We will evaluate f(x) =2x+1 where x > 0, because x = 3 and 3 <0

We can't use -3, because x ≤ 0, and 3 is not less than 0.

Now, evaluating the function:

f(x)=2x+1\\Put\:x=3\\f(3)=2(3)+1\\f(3)=6+1\\f(3)=7

So, Evaluating the piecewise function when X =3, we get f(3) = 7

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Triangle RST is shown below. What is the length of ST?
Tju [1.3M]

Answer:

A: 12

Step-by-step explanation:

Using the pythagoreom theorem, a^2+b^2=c^2. We can plug in the lengths of 5 and 13 which is 5^2+b^2=13^2. Now we can square the numbers to get 25+b^2=169. Subtract 25 from 169 to get 144. Now find the square root of 144 which is 12.

3 0
3 years ago
9y + 10 = -8<br><br> Please explain how you got your answer
Ronch [10]

You are trying to solve for y (get y by itself)

9y + 10 = -8       Subtract 10 on both sides

9y + 10 - 10 = -8 - 10

9y = -18         Divide 9 on both sides

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8 0
3 years ago
5 donuts and 2 cups of hot Chocolate costs 24$. 2 donuts and 3 cups of hot chocolate costs 14$.How much does each donut and each
Allushta [10]

Answer:cost of each donut =$4

and cost of each cup of hot chocolate =$2

Step-by-step explanation:

Step 1

Let donuts be represented as d

and cups of hot chocolate be rep as c so that

5 donuts and 2 cups of hot Chocolate costing 24$ will be expressed as

5 d+ 2 c= 24

And 2 donuts and 3 cups of hot chocolate costing  14$ will be expressed as

2d +3 c= 14

Step 2

Using elimination method,Multiply equation 1 by 3 and equation 2 by 2

15d+ 6c= 72----equation 3

4d+ 6c= 28-----equation 4

Subtracting equation 4 from equation 3 gives us

11 d=44

d= 44/11

d= 4

To find c, using equation 1

5 d+ 2 c= 24

5 x 4+ 2c=24

20+2c=24

2c=24-20

2c=4

c=4/2 =2

cost of each donut =$4

and cost of each cup of hot chocolate =$2

3 0
4 years ago
I need your help please❤️ you place $6543 in a savings account which earns.7% interest compounded semi annually, after 3 years h
jasenka [17]
$8043 is what you have now
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3 years ago
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3 years ago
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