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antiseptic1488 [7]
3 years ago
9

4.5+(2×2.5)^2-6=? show work please

Mathematics
2 answers:
Viefleur [7K]3 years ago
8 0
I just did the answer
Ainat [17]3 years ago
5 0

Try using P.E.M.D.A.S,it will make the problem much easier:(make sure you do each step in order.)

P:Parenthesis,solve the equation in the parenthesis first.

E:Exponants,solve the exponants,if they're are none,you can skip this step.

M:Multiplication,Multiply any numbers that need to be multiplied.

D:Division,divide,if there is nothing to divide,you may skip this step.

A:Addition,add and solve for a sum.

S:Subtraction,subtract any numbers that need to be subtracdted.

    If this did not help or seemed confusing,i strongly suggest you look it up on the internet or ask your teacher about P.E.M.D.A.S,it makes problems much easier to solve. :)






































































































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Ann took
kow [346]

How do you calculate the mean (average) ?
Isn't it just

  Mean = (total points of all the tests) divided by (number of tests)  ?

Let's work with that.

Multiply each side of that formula by (number of tests), and you have

       Total points of all the tests  =  (Mean) times (number of tests).

In this problem, you know the mean, and you know the number of tests,
so you can easily calculate the total points.


3 0
4 years ago
Read 2 more answers
F(x)= -2x + 2; Find f(5)
zhuklara [117]
If f(x) = -2x + 2, f(5) can be found by substituting in the value 5 for x in the equation:

f(5) = - 2(5) + 2

Our first step in simplifying this expression is to perform the multiplication as outlined by the order of operations (PEMDAS).

f(5) = -10 + 2

Finally, we must get our final answer by adding together the remaining terms.

f(5) = -8

Hope this helps!
7 0
4 years ago
Find the greatest common factor of 28 and 42.
Otrada [13]

Answer:

14

Step-by-step explanation:

28=2x2x7

42=2x3x7

=>gcf=2x7=14

4 0
4 years ago
G(x) = 3x -1. Find x such that g(x)= 2​​0​.
sergiy2304 [10]

Step-by-step explanation:

i. 3x-1=20

or, 3x= 21

x= 7

ii. 3x+1= 22

3x= 21

x= 7

iii. 2x-5=99

2x= 104

x=52

iv. g(3)= 3+5/2= 11/2

g(0)= 0+ 5/2=5/2

g(-3)= -3+5/2 = -1/2

x+5/2= 0

so, x= -5/2

3 0
3 years ago
Solve<br> 2x2 + 5x + 3 = 0
gregori [183]
X=-1/3

In other way is

X=0.3,x=-3^-1
5 0
4 years ago
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