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3 years ago

In order of operations do you add them subtract

2 answers:

6 0

Yes, parenthesis, exponents, multiplication, division, addition, subtraction.
PEMDAS
Unless, subtraction comes first (on the left)
Example:
1)
2+5*8-4
5*8 = 40
40+2 = 42
42-4 = 38

2) 4-5*8+9
5*8 = 40
40-4 = 36
36+9 = 45

Although sometimes you get the same answer from doing either first

jarptica [38.1K]3 years ago

5 0

Add first then subtract
p parentheses
e exponents
m multiply
d divide
a add
s subtract

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-8 + 8g = 56 work and answer

Vadim26 [7]

Answer:

g=8

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

6 0

2 years ago

Please need help on this

artcher [175]

Answer:

the center is (-4,7) and the radius is 3

Step-by-step explanation:

The center of a circle can be found using the equation $(x-h)^2 + (y-k)^2 = r^2$ and is (h,k) from it. Notice h and k are the opposite value as in the equation.

First write the equation in this form.

$x^2 + 8x + ( ?)+ y^2 - 14y + (?) + 56 = 0$

Complete the square with each variable to find what numbers should go in place of the question marks.

$(8/2)^2 = 4^2 = 16$

$(-14/2)^2 = -7^2 = 49$

Add 16 and 49 to both sides of the equation.

$x^2 + 8x + 16 + y^2 - 14y + 49 + 56 = 16 + 49\\(x+4)^2 + (y-7)^2 + 56 = 65\\(x+4)^2 + (y-7)^2 = 9$

So the center is (-4,7) and the radius is 3.

5 0

3 years ago

Mean, Median, Mode and Range. Easy hard math. Please show work and give answers . Need help appreciate you all

tigry1 [53]

Answer:

Step-by-step explanation:

quiz scores:

a. arrange them all from least to greatest to figure out the median first

your quiz: 15, 16, 17, 18, 19 middle # = 17 median = 17

friend's quiz: 12, 13, 17, 20, 20 middle # = 17 median = 17

now for mean add all of your quiz scores up and divide by how many #s

15 + 16 + 17 + 18 + 19 = 85 / 5 = 17 mean = 17

now your friend's:

12 + 13 + 17 + 20 + 20 = 82 / 5 = 16.4 mean = 16.4

mode is which number is used the most

your mode = you don't have a mode your friend's mode = 20

b. you have a higher mean than your friend

world populations:

a. range is to subtract the smallest number from the largest

803 - 31 = 772

b. mean is adding it all up and dividing by how many numbers there are:

803 + 487 + 348 + 368 + 730 + 31 = 2767 / 6 = 461.17

median is arranging them in order and finding the middle #

31, 348, 368, 487, 730, 803

368 + 487 = 855 / 2 = 427.5

mean = 461.17

median = 427.5

mode = no mode

tomato plants:

a. range is subtracting the smallest from the largest

52 - 36 = 16

b. mean is adding all the #s and dividing by how many #s there are:

36 + 45 + 52 + 40 + 38 +41 + 50 + 48 = 350 / 8 = 43.75

median is the middle from least to greatest

36, 38, 40, 41, 45, 48, 50, 52

41 + 45 = 86 / 2 = 43

mean = 43.75

median = 43

mode = no mode

hope this helps! :)

4 0

3 years ago

When f(x) = 4x + 1 and g(x) = 4x - 3 Find f(x) * g(x) Pls need help can u answer these ?

earnstyle [38]

Answer:

(4x+1)(4x-3)

4x(4x-3)+1(4x-3)

16x²-12x+4x-3

16x²-8x-3

6 0

3 years ago

Divide 125 by 1/4 and add 13 to the quotient. Plz help

Karo-lina-s [1.5K]

I think the answer is 513

5 0

2 years ago