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mr_godi [17]
3 years ago
6

Need some help with this one Two questions

Mathematics
2 answers:
rosijanka [135]3 years ago
5 0

Answer:

4,54

Step-by-step explanation:

what i find useful is if you flip the percentage of whatever, it makes it pretty easy. in this situation itd be 50% of 8, which is 4. for the total price, you just add the tax to the price

n200080 [17]3 years ago
3 0

Answer:

.4

Step-by-step explanation:

i belive i did this  wrong i havent  done that in awhile  

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. The total cost (t) is proportional to the number (n) of items purchased at a constant price of $3.
navik [9.2K]

Answer

t = 3n

Step-by-step explanation:

n and t are proportional so you know they will be on the opposite ends of the equal sign. Then you know that the items are purchased at the constant price of $3. That means you do the number of items times 3 to get the total cost.

3 0
3 years ago
Can someone help me out? (Show work on how to solve)
belka [17]

Answer:

dghggjj

Step-by-step explanation:

s gm knfc JC. jz. jz. .xx nkcmxd I nt☺️️

8 0
3 years ago
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If f(x)=2x(With an exponent of 2) -3, find f(-2)
Mrac [35]

Answer:

  5

Step-by-step explanation:

Put -2 where x is and do the arithmetic.

  f(x) = 2x² -3

  f(-2) = 2(-2)² -3 = 2(-2)(-2) -3 = 8 -3

  f(-2) = 5

3 0
3 years ago
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I don't understand how to do this problem.
Delicious77 [7]
Answers: 

x = 4
EF = 14
CF = 7
EC = 7

-------------------------------------------------------------
-------------------------------------------------------------

Work Shown:

C is the midpoint of segment EF. This means that EC = CF. In other words, the two pieces are congruent. 

Use substitution and solve for x
EC = CF
5x-13 = 3x-5
5x-13+13 = 3x-5+13
5x = 3x+8
5x-3x = 3x+8-3x
2x = 8
2x/2 = 8/2
x = 4

Now that we know that x = 4, we can use this to find EC and CF

Let's compute EC
EC = 5x - 13
EC = 5*x - 13
EC = 5*4 - 13 ... replace x with 4
EC = 20 - 13
EC = 7

Let's compute CF
CF = 3x - 5
CF = 3*x - 5
CF = 3*4 - 5 ... replace x with 4
CF = 12 - 5
CF = 7

As expected, EC = CF (both are 7 units long).

By the segment addition postulate, we can say EC+CF = EF

EC+CF = EF
EF = EC+CF
EF = 7+7
EF = 14
8 0
3 years ago
Help me plz !!!!!!!!!!​
kiruha [24]

Answer:

The answer is b. 72.3cm

Step-by-step explanation:

11.5cm is the radius

To find the circumference multiply the radius by 2 then multiply it again by 3.14

3.14 is the beginning of pi.

e.g - 2 × 3.14 x 11.5

5 0
3 years ago
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