1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anna [14]
3 years ago
6

What is this?? and how do you work it out???

Mathematics
1 answer:
Makovka662 [10]3 years ago
7 0
Things that u have to do
You might be interested in
Find the value of p3- q3, if p-q = -7 and pq= -10
sergiy2304 [10]
<h3>Answer:   -133</h3>

===================================================

Work Shown:

p-q = -7

(p-q)^2 = (-7)^2

p^2-2pq+q^2 = 49

p^2-2(-10)+q^2 = 49

p^2+20+q^2 = 49

p^2+q^2 = 49-20

p^2+q^2 = 29

By the difference of cubes formula, we can say,

p^3 - q^3 = (p-q)*(p^2+pq+q^2)

p^3 - q^3 = (p-q)*(p^2+q^2+pq)

p^3 - q^3 = (-7)*(29-10)

p^3 - q^3 = -133

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

Here's another way to solve:

p-q = -7

p = q-7

pq = -10

(q-7)*q = -10

q^2-7q = -10

q^2-7q+10 = 0

(q-5)(q-2) = 0

q-5 = 0 or q-2 = 0

q = 5 or q = 2

If q = 5, then p = q-7 = 5-7 = -2

If q = 2, then p = q-7 = 2-7 = -5

We can see that no matter what we pick for q, we'll get p*q = -10

Also, you should find that p^3-q^3 is equal to -133 for either case as well.

5 0
3 years ago
Surface area of a 4m and 4m and 4m cube
jeka94

Answer: 96 m²

Step-by-step explanation: Surface area is the sum of the areas of all of the faces of a 3-dimensional figure.

So to find the surface area of a cube, it's important to understand that each face of a cube has the same area so we can simply find the area of one face of a cube and multiply by the number of faces which is 6.

To find the area of one face of a cube, we can use the formula for the area of a square which is S².

Since the length of a side is 4 meters, we have (4 m)² or 4 meters x 4 meters which is 16 m².

Now, since there are six sides to a cube, we have 6 (16 m)² which is equal to 96 m². So the surface area of the cube is 96 m².

6 0
3 years ago
Read 2 more answers
g True or False: We will not have omitted variable bias if we leave out a RHS variable that affects the LHS variable, provided t
Rainbow [258]

Based on the information given, it should be noted that we will have an omitted variable bias, therefore, it's true.

<h3>What is an omitted variable?</h3>

An omitted variable simply occurs when a statistical model that occurs when one or more relevant variable is left out.

It should be noted that we will have omitted variable bias if we leave out a RHS variable that affects the LHS variable, even in a situation where there is no correlation between the omitted RHS variable and the included RHS variables.

For omitted variable bias to occur, it should be noted that the omitted variable will be correlated with the included regressor.

Learn more about omitted variable on:

brainly.com/question/10912873

3 0
3 years ago
What is m∠AEB?<br><br><br><br> Enter your answer in the box.
avanturin [10]
Angle AEB and angle CED are vertical angles, this means they equal each other, therefore we set their values as an equation and solve:

5x-10=3x+40
Subtract 3x to both sides
2x-10=40
Add 10 to both sides
2x=50
Divide both sides by 2
x=25

After we have gotten the value of x we can plug it in into the equation of angle AEB:

5x-10
Substitute x by 25
5(25)-10
Distribute
125-10
Substract
115

The measurement of angle AEB is 115

Hope it helped!, have a great day.
7 0
3 years ago
The price of an item has risen to $91 today. yesterday it was $65 l. find the percentage increase
Natali [406]

Answer:

40%

Step-by-step explanation:

First you take $19 - $65 to get $26

Then: 26 ×100= 2600÷ 65= 40%

8 0
3 years ago
Other questions:
  • Solve the equation -6 = -9 – 3x for x. A.-2 B.-1 C.0 D.1
    11·1 answer
  • Read and write the number in two other forms. five hundred sixty-one thousand, thirty-eight
    10·1 answer
  • A certain elevator has a maximum weight capacity of 1,000 kilograms. Ten people weighing a total of 7,000 hectograms get on the
    9·1 answer
  • Write the polynomial which represents the perimeter of a triangle whose sides are represented
    13·1 answer
  • Is this a expression or inqualities 15x &lt; x + 8
    14·2 answers
  • Please help please please help please
    5·1 answer
  • Multiply (2x-5)(x+3)
    10·2 answers
  • PLS HELP ASAP GIVE BRAINLIEST
    6·1 answer
  • PLZ HELP ASAP! I'M LITERALLY CRYIN' TOT
    15·2 answers
  • Find the square root of -18 please show work if possible
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!