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3 years ago

What comes first addition or multiplication?

1 answer:

Montano1993 [528]3 years ago

8 0

The answer to this question is "MULTIPLICATION" comes first. As per the PEMDAS rule commonly used and followed in solving mathematics problems and equations, the multiplication comes first before addition. Well, the actual sequence is solving a problem using and following PEMDAS rule is PEMDAS - parenthesis, exponent, multiplication, division, addition, and subtraction. Therefore, the answer to this question is multiplication.

You might be interested in

Write the linear equation that gives the rule for this table.

Zinaida [17]

Answer:

f(x) = -7x + 1

Step-by-step explanation:

Slope intercept form is

y = mx + b

m is slope

b is y-intercept

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

y decreases by 7 for each increase of 1 in x

slope = -7

to find "b" plug in one of the points and m = -7

using point (3, -20)

y = mx + b

-20 = -7(3) + b

-20 = -21 + b

b = 1

The equation is

f(x) = -7x + 1

3 0

3 years ago

Will give brainliest plz helpp!!!

Sati [7]

Answer:

The answer too your question is C. to your first part

To the second part D. is one of the answers so is E.,

Step-by-step explanation:

It is C. because there are three ones, one 4, one 3, and one 2. that is the explanation too the first part.

5 0

3 years ago

Correct answers only please! If you don't know the answer, then please don't guess or say what you think it is.

Rina8888 [55]

C. 37”

you gotta use the pythagorean theorem and do 32^2 + 18^2 = x^2 so to find x you get the square root of that which is about 37

3 0

3 years ago

the company also discovered that it costs 30 to 2 widgets, 118 to produce 4 and 766 to produce 10 widgets. Find the total cost o

miv72 [106K]

We will first write cost function. As we are given three points here so we will use them to write quadratic function

$y = ax^{2} +bx+c$ ----------------------------------------(1)

So we will plug point (2,30) in it first ( for 2 widgets cost is 30)

So simply plug 30 in y place and 2 in x place in equation (1) as shown

$30 = a(2)^{2} +b(2)+c$

$30 = 4a +2b +c$ ----------------------------------------------(2)

Similarly plug next point (4,118) now in equation (1)

$118 = a(4)^{2} +b(4)+c$

$118 = 16a +4b +c$ ----------------------------------------------(3)

Similarly plug third point (10,766) now in equation (1)

$766 = a(10)^{2} +b(10)+c$

$766 = 100a +10b +c$ ----------------------------------------------(4)

Now we have to solve system of linear equations (2),(3) and (4) for a,b,c

We can use method of elimination

Subtract equation (3) - equation (2)

118 = 16a +4b +c

-(30 = 4a +2b +c)

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

88 = 12a +2b -----------------------------------(5)

Similarly subtract equation (4)-equation (3)

766 =100a +10b +c

-( 118 = 16a +4b +c)

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

648 = 84a + 6b ------------------------(6)

Now to eliminate b in equations (5) and (6) multiply equation (5) by -3 and then add to equation (6)

-3×(88 = 12a +2b)

-264 = -36a - 6b

648 = 84a + 6b

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

384 = 48a

Now solve for a

$\frac{384}{48} = \frac{48a}{48}$

8 = a

Plug 8 in a place in equation (5) or (6) and solve for b as shown

88 = 12(8) +2b

88 = 96 + 2b

88 -96 = 96 +2b -96

-8 = 2b

$\frac{-8}{2} = \frac{2b}{2}$

-4 = b

now plug 8 in a place, -4 in b place in either of equations (2),(3) or (4) and solve for c

30 = 4(8) +2(-4) +c

30 = 32 -8 + c

30 = 24 + c

30 - 24 = 24 + c - 24

6 = c

So plugging values of a as 8, b as -4 and c as 6 in equation (1) we get

$y = 8x^{2} -4x+ 6$

So thats the cost function. So now for 6 widgets, plug 6 in x place in this equation and find y value

$y = 8(6)^{2} -4(6)+ 6$

y = 8(36) - 24 +6

y = 288 -24 +6

y = 270

So $270 is the cost for producing 6 widgets and thats the final answer

4 0

3 years ago

A right rectangular pyramid is sliced horizontally (across) at the red line by a plane parallel to the base. What is the shape o

docker41 [41]

The shape of the cross-section will be a trapezoid

Here, we want to get the shape of the right rectangular pyramid sliced horizontally across the red line

What we simlpy get is the shape below the red line

Upon slicing, what we get will be a shape that looks like a trapezoid

Hence, the correct selection is a trapezoid

6 0

1 year ago