Simplify this numerical expression. (-12)(-13)

Answers

Answer 1

Answer:

156

Step-by-step explanation:

mulitply them, multiplying 2 negative numbers make a positive one. -12 x -13 = 156


Related Questions

18+ (-30)=
helpppppp

Answers

Answer:

[tex]18 + ( - 30) = 18 - 30 = - 12[/tex]

I hope I helped you^_^

-12 is what the calculator Said

e^3x.cos4x.sin2x hii please solv this​ you have to differentiate

Answers

Answer:

[tex]y = e^{3x}.cos4x.sin2x[/tex]

[tex]=> y' =- 3e^{3x}.4sin4x.2cos2x=-24.e^{3x}.sin4x.cos2x[/tex]

[tex]dy=y'.dx => dy = -24e^{3x}.sin4x.cos2x.dx[/tex]

Step-by-step explanation:

The function [tex]e^3^x[/tex].cos4x.sin2x on differentiating gives the solution as 2[tex]e^3^x[/tex]cos2x.cos4x - 4[tex]e^3^x[/tex]sin2x.sin4x + 3[tex]e^3^x[/tex]cos4x.sin2x.

What is Product rule in Differentiation?

Product rule in differentiation states that, for two functions f(x) and g(x),

[tex]\frac{d}{dx}[/tex] [f(x).g(x)] = f(x) . [tex]\frac{d}{dx}[/tex][g(x)] + g(x) . [tex]\frac{d}{dx}[/tex][f(x)]

The question is to differentiate y = [tex]e^3^x[/tex].cos4x.sin2x

We have three functions here.

Let u = [tex]e^3^x[/tex] and v = cos4x.sin2x

[tex]\frac{d}{dx}[/tex] [u . v] = u [tex]\frac{d}{dx}[/tex][v] + v [tex]\frac{d}{dx}[/tex][u]

             = [tex]e^3^x[/tex] [tex]\frac{d}{dx}[/tex] [cos4x.sin2x] + cos4x.sin2x [tex]\frac{d}{dx}[/tex] [[tex]e^3^x[/tex] ]

             = [tex]e^3^x[/tex] [tex]\frac{d}{dx}[/tex] [cos4x.sin2x] + cos4x.sin2x (3[tex]e^3^x[/tex])

[tex]\frac{d}{dx}[/tex] [u . v] =  [tex]e^3^x[/tex] [tex]\frac{d}{dx}[/tex] [cos4x.sin2x] + 3[tex]e^3^x[/tex]cos4x.sin2x

Let the above equation be equation E.

Again apply the product rule for [tex]\frac{d}{dx}[/tex] [cos4x.sin2x].

Let u' = cos4x and v' = sin2x

[tex]\frac{d}{dx}[/tex] [u'. v'] = u' [tex]\frac{d}{dx}[/tex][v'] + v' [tex]\frac{d}{dx}[/tex][u']

            = cos4x [tex]\frac{d}{dx}[/tex][sin2x] + sin2x [tex]\frac{d}{dx}[/tex][cos4x]

            = cos4x [2cos2x] + sin2x [-4sin4x]

            = 2cos2x.cos4x - 4sin2x.sin4x

Substituting this is equation E, we get,

[tex]\frac{d}{dx}[/tex] [u . v] =  [tex]e^3^x[/tex] [2cos2x.cos4x - 4sin2x.sin4x] + 3[tex]e^3^x[/tex]cos4x.sin2x

             =  2[tex]e^3^x[/tex]cos2x.cos4x - 4[tex]e^3^x[/tex]sin2x.sin4x + 3[tex]e^3^x[/tex]cos4x.sin2x

Hence the function [tex]e^3^x[/tex].cos4x.sin2x on differentiating gives 2[tex]e^3^x[/tex]cos2x.cos4x - 4[tex]e^3^x[/tex]sin2x.sin4x + 3[tex]e^3^x[/tex]cos4x.sin2x.

To learn more about Product Rule, click :

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help me with this pelases

Answers

Answer:

32 square units

Step-by-step explanation:

You can split this shape into four different shapes:

2 unit by 2 unit triangle

2 unit by 2 unit square

2 unit by 6 unit triangle

To find the length of the big triangle, add the lengths of the small triangle,the square,and the bigger leg of the other triangle:

2 + 2 + 6 = 10

10 unit by 4 unit triangle

Then solve all these areas:

( 2 x 2 ) / 2 = 4 / 2 = 2

2 x 2 = 4

( 2 x 6 ) / 2 = 12 / 2 = 6

( 10 x 4 ) / 2 = 40 / 2 = 20

Then add all these areas together to get the total area of the composite shape:

2 + 4 + 6 + 20 = 32

Middle school math pls help

Answers

Answer:

2 3/4

Step-by-step explanation:

You need to find the greatest common factor of 4 and 2 then you multiply the 2 by 2 to get a 4 and multiply the 1, then you add those together to get 2 3/4.

what do many prefixes and suffixes have in common?

Answers

Prefixes and suffixes are both types of affixes.

PLEASE HELP ME WITH THIS ONE

Answers

Answer:

b answer

Step-by-step explanation:

hope helpful

if wrong sorry

3y=9-12x I need the slope for this equation and the steps

Answers

3y = 9 - 12x
Divide by 3
y = 3 - 12/3x
(-12/3 simplifies to -4)
y = 3 - 4x
-4 would be your slope! :)

Answer:

slope = -4

Step-by-step explanation:

3y = 9 - 12x

Rearrange the right-hand side:

3y = - 12x + 9

Next, Divide both sides by 3 to isolate y:

[tex]\frac{3y}{3} = \frac{-12x + 9}{3}[/tex]

y = -4x +3 this is the slope-intercept form where the slope, m = -4, and the y-intercept, b = 3.

Therefore, the slope = -4.

Please mark my answers as the Brainliest if you find this helpful :)

Sketch the graph of this linear equation
4y = -7x + 1​

Answers

Answer:

use desmos to graph it

.....

When the same probability is assigned to each outcome of a sample space, the experiment is said to have _______ ________ outcomes.

Answers

Answer:

Equally likely

Step-by-step explanation:

Hope this is right!

the answer is Equally likely :)))

19 - 6n = - 5 - 3 (2n - 6)

Answers

Answer:

Its 50

Step-by-step explanation:

Which mathematical operation is being used here?
Eight and some number

Answers

Answer:

All math operation

Basic Operations. The basic arithmetic operations for real numbers are addition, subtraction, multiplication, and division.

Step-by-step explanation:

I believe the answer is B.

Answers

Answer:

Yes, B is correct, the horizontal line test is used to test if an INVERSE is a function.

Step-by-step explanation:

evan is running a marathon. He wants to caculate his average speed between two checkppints. He reaches the 3- mile checkpoint after 0.75 hour and the 18- mile checkpoint after 2 hours what is evans average speed, in miles per hour between the two checkpoints

Answers

Answer:

12

Step-by-step explanation:

18/2-3/.75=15/1.25

The average speed of Even between two checkpoints is 9 miles per hour.

What is an average speed?

The distance covered by the particle or the body in an hour is called the average speed. It is a scalar quantity. It is the ratio of the total distance to the total time.

We know that the average speed formula is given as,

Average speed = Total distance / Total time

Running a marathon is Evan. Between two checkpoints, he wants to compute his average speed. He takes 0.75 hours to go to the 3-mile checkpoint and 2 hours to get to the 18-mile milestone.

The average speed is given as,

Average speed = 18 / 2

Average speed = 9 miles per hour

The average speed of Even between two checkpoints is 9 miles per hour.

More about the average speed link is given below.

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Tristen is making cookies and cream ice cream to sell at the school fair. He making 80 gallons of ice cream. He wants to make sure there is a full cookie in every 1/4 cup of ice cream. If there are 16 cups in a gallon, how many cookies will trustees need to make the ice cream? I need help asap

Answers

Answer:

5120 cookies

Step-by-step explanation:

Find the number of cups in 80 gallons:

80*16 = 1280 cups

Now multiply the number of cups by 4 since each cup of ice cream  is equivalent of 4 cookies:

1280*4 = 5120

Write the slope-intercept form of the given line. Include your work in your final answer. Type your answer in the box provided to submit your solution.

Answers

Answer:

The slope-intercept form of the given line is: y = -1/3x+1

Step-by-step explanation:

I need help. I’m a little bit confused

Answers

Answer:  65 degrees

Explanation:

The adjacent angle directly above angle 8 is congruent to the 115 degree angle (due to the corresponding angles theorem). This only works because p || q and q || r, so by the transitive property of parallel lines, we know that p || r.

Since the 115 degree angle and angle 8 pair up to form a straight line, we know that the two angles must add to 180 degrees

115+(angle 8) = 180

angle 8 = 180 - 115

angle 8 = 65 degrees

Answer:

[tex]m[/tex]∠8 = 65°

Step-by-step explanation:

The other side (angle) of 115 is [tex]n[/tex] and [tex]n =[/tex] ∠8

To find [tex]n[/tex] you need to subtract 180 - 115 giving you 65, and since n is angle 8, angle 8 is also 65 since the angles have a state of congruence...

Maths question, someone pls help me solve it

Answers

It’s just math backwards

A man walked 6 kilometres per hour. How far does he walk between 9:30a.m 12 noon

Answers

Answer:

15

Step-by-step explanation:

if he walks 6 kilometres per hour multiply 6 times 2 and you get 12 and he walked for half an hour and half of 6 is 3 so 12 plus 3 equals 15

Answer:

15 km

Step-by-step explanation:

given:

1 hour=6 km

9:30--12:00=2.5 hours

•°•2.5×6=15 km

c) Sarah and Maya must split the $15 they earned
scorekeeping a volleyball game. Sarah says, "There
is only one way to split this money, we both get
$7.50." Maya argued that there were an infinite
number of ways to divide up the money. Who is
correct? Prove their argument.



(I really need help, who is right, and tell me why please!)

Answers

Answer:

I think that Maya is right because the question doesn't state that they had to split it equally, you could split it infinite ways.

Step-by-step explanation:

You could give one person 8$ and the other7$. you could do it infinitely.

Higher Order Thinking A farmer grows
128 red tomato
plants and 102 yellow tomato plants. Each plant produces
about 32 tomatoes. The farmer plans to
sell each tomato
for a $2. Explain how to find a reasonable estimate for the
total amount of money the farmer will earn if she sells all
of the tomatoes.

Answers

Answer: 14720 dollars, or $14720

Step-by-step explanation:

128 red tomato plants plus 102 yellow tomato plants = 230 tomato plants in total.

230 plants with 32 tomatoes each = 7360 tomatoes in all

7360 x 2 dollars = 14720 dollars

What does this mean



Find the area and perimeter of the shape

Answers

Perimeter is the distance around the outside of a shape. Area measures the space inside a shape.


evaluate the expression when z= -5
100 divided (-z2)

Answers

Answer:the anwser is 4

Step-by-step explanation:

Ay yo I think the answer is 4

Any experts, help please.

Answers

Step-by-step explanation:

I am not sure who made the dots on the charts, but they are wrong.

y = 1/2 x + 3

domain means all valid values for x.

range means all valid values for y (the functional results).

x = 0

y = 1/2 × 0 + 3 = 3

x = 1

y = 1/2 × 1 + 3 = 3.5

x = 2

y = 1/2 × 2 + 3 = 4

x = 3

y = 1/2 × 3 + 3 = 4.5

x = 4

y = 1/2 × 4 + 3 = 5

so, the range is 3, 3.5, 4, 4.5, 5

y = x - 6

x = 10

y = 10 - 6 = 4

x = 12

y = 12 - 6 = 6

x = 14

y = 14 - 6 = 8

x = 16

y = 16 - 6 = 10

x = 18

y = 18 - 6 = 12

so, the range is 4, 6, 8, 10, 12

Please help.

A sports outlet received a shipment of
baseball gloves. Of the gloves, 13 were
black and the rest were tan. If there were
85 gloves in the shipment, how many were
tan gloves? Write an equation and solve.


Answers

Step-by-step explanation:

72 tan gloves and 13 black

85 gloves total - 13 black gloves = ?tan gloves
85-13=72
You have 72 tan gloves

margo is repaying a loan from her parents. she has already paid $315 and still owes them $1245. write an equation to find the original amount a of the loan

Answers

Answer:

n-315=1245

Step-by-step explanation:

n stands for the original amount of the loan. Margo has paid $315, so the original number minus what Margo has paid, and the equality is the amount that Margo still owes.

The gitman siblings are in a fight, and they split up the play-room, but sarah needs/wants 1/3 of the house to make a cake. which part(s) of the house, should she get?

Answers

bathroom

Step-by-step explanation:

A toy factory can produce approximately 36,000 building blocks in just one minute! The function B(t)=36,000t approximates the total number of blocks produced over t minutes. In this context, what is the largest possible domain of B(t)?

Answers

Answer:

all real numbers greater than or equal to 0

Step-by-step explanation:

All real numbers greater than or equal to 0.

60 POINTS PLS HELP WILL MARK BRAINLIEST EXPLAIN TOO PLS

Answers

Step-by-step explanation:

we need to find the slope of each line.

the slope is the ratio y/x indicating how many units y changes, when x changes a certain amount of units.

parallel lines have the same slope.

for a perpendicular line x and y in the slope ratio are put upside down, and the sign is flipped (+ to - and vice versa).

a.

2x - 8y = -24

2x + 24 = 8y

y = 2/8 x + 24/8 = 1/4 x + 3

the slope is 1/4 (always the factor of x).

4x + y = -2

y = -4x - 2

the slope is -4 = -4/1.

this line is therefore perpendicular to the first line.

x - 4y = 4

x - 4 = 4y

y = 1/4 x - 4/4 = 1/4 x - 1

the slope is 1/4.

this line is therefore parallel to the first line.

b.

3x - 9y = 9

9y = 3x - 9

y = 3/9 x - 9/9 = 1/3 x - 1

the slope is 1/3

3y = x + 12

y = 1/3 x + 4

the slope is 1/3.

this line is therefore parallel to the first line.

2x - 6y = 12

6y = 2x - 12

y = 2/6 x - 12/6 = 1/3 x - 2

the slope is 1/3.

this line is therefore parallel to the first line.

The sides of a triangle are in the ratio 12:17: 25 and its perimeter is 540cm. The area is:
a) 1000 sq.cm.
b) 5000 sq.cm.
c) 9000 sq.cm.
d) 8000 sq.m

Answers

1000

Step-by-step explanation:

Find the height of the triangle using the Pythagoras theorem

Then, use it to calculate the area of the triangle

2r=5s/2-s/4 (solve for s)

Answers

Answer:

s=8r/9

Step-by-step explanation:

2r=5s/2-s/4 multiply both sides by 4

8r=10s-s (5s times 4 = 20s and 20s/2=10s) combine like terms

8r=9s divide by 9 to isolate s

8r/9=s

• Calculate the product
2r = 5s/2 - s/4
• multiply both sides by 4
8r = 10s - s
• collect like terms
8r = 9s
• divide both sides by 9
8r ➗ 9 = 9s
• write the value of s
s = 8/9
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