Determine whether the expression 9m^2 + k is equal to 7m^2 + 2(2k-m^2) + 5k. Use properties to justify your answer.

Answers

Answer 1

they are not equal

The first number cannot be simplified (9m^2 + k) and is the second is equal to 5m^2+9k

hope this helps <3


Related Questions


The product and the square of a number decreased by 5 is 67. Find the number.

Answers

Answer: 87

Step-by-step explanation:

Four times a number decreased  by 5 is 67.Find the number.

Four times a number decreased by 5 is 67.

4x5=20

X-20=67

X=67+20

X=87

Akira's town had an election last month. 42 people voted in the election and 58 did not vote. What percentage of the people voted?

Answers

Answer:

Step-by-step explanation:

Find the total number of people

Total = those voting + those not voting

Total = 42 + 58

Total = 100

Find the % voting

% = voting * 100/ total = 42 * 100 / 100 = 42%

A truck has a total of b pounds of fruit in n identical boxes. How many
pounds of fruit are in each box?

Answers

The answer would be about

[tex]3x² -10 = -37[/tex]

Answers

Solution:

[tex] {3x}^{2} - 10 = - 37 \\ = > {3x}^{2} = - 37 + 10 \\ = > {3x}^{2} = - 27 \\ = > {x}^{2} = \frac{ - 27}{3} \\ = > {x}^{2} = - 9 \\ = > x = \sqrt{ - 9} \\ = > x = - 3 \: \: or \: \: \: 3[/tex]

Answer:

x = -3 or 3

Hope it helps.

Do comment if you have any query.

Solve 2x + 6 < 8 or 2x + 8 > 12.

Answers

Answer:

x ⋅ ( 2 x ) + 6 < 8 = 2 x 2 + 6 < 8

2 x + 8 > 12 = 2 x 2 + 6 < 8

Step-by-step explanation:

HELP NEED ASAP PLS HELP

Answers

Answer:

  MN = 56

Step-by-step explanation:

This can only be solved if we know the relation of MN to other dimensions of the trapezoid. If we assume MN is a midline (AM=MD, BN=NC), then MN is the average of the base lengths:

  MN = (AB +CD)/2

  2MN = AB +CD . . . . . multiply by 2

  2(12x -4) = 8x +72 . . . fill in the given values for the segment lengths

  24x -8 = 8x +72 . . . . . eliminate parentheses

  16x = 80 . . . . . . . . . . . add 8-8x

  x = 5 . . . . . . . . . . . . . . divide by 16

  MN = 12(5) -4 = 56 . . . find the length of MN using its formula

A farmer has collected data from one of his crops. Suppose the farmer found that the number of seeds, () (in weeks) was
()= t^2/4 seeds per mature plant.
Further, the farmer discovered that only
()=40.56−^2/4+1801.75/^2+188.8/
plants matured to age .
Determine the maximum rate of change of the crop's seed production

Answers

The rate of change of the crop's seed production is given by differential of

the function of the number of seeds produced.

The maximum rate of change of the seed production is approximately 117 seeds per week.

Reasons:

[tex]\displaystyle \mathrm{The \ number \ of \ seeds \ per \ plant, \ S(t)}= \mathbf{\frac{t^2}{4}}[/tex]

[tex]\displaystyle \mathrm{Plants \ that \ mature \ to \ age \ t, \ P(t)}= \mathbf{40.56- \frac{t^2}{4} + \frac{1,801.75}{t^2} +\frac{188.8}{t}}[/tex]

The number of seeds produced by all the plants, n = S(t) × P(t)

Which gives;

[tex]\displaystyle \mathrm{\ P(t) \times S(t)}= \left(40.56- \frac{t^2}{4} + \frac{1,801.75}{t^2} +\frac{188.8}{t}\right) \times \frac{t^2}{4}[/tex]

[tex]\displaystyle \mathrm{ \left(40.56- \frac{t^2}{4} + \frac{1801.75}{t^2} +\frac{188.8}{t}\right) \cdot\frac{t^2}{4}} = \mathbf{-0.0625\cdot t^4+10.14\cdot t^2 + 47.2 \cdot t + 450.4375}[/tex]

The maximum rate of change is the highest value of the rate of change function.

To find the maximum rate of change of the crops production, the above

function for the number of seeds is differentiated twice. The first

differentiation is to find the rate of change function, and the second

differentiation is to determine the value of t at the maximum rate of change

as follows;

The rate of change of the crop's seed production is given by following function;

[tex]\displaystyle \frac{d}{dt} \left( -0.0625\cdot t^4+10.14\cdot t^2 + 47.2 \cdot t + 450.4375 \right) = -0.25\cdot t^3+ 20.28 \cdot t - 47.2[/tex]

Rate of change function, n'(t) = -0.25·t³ + 20.28·t + 47.2

At the maximum value of the above rate of change function, we have

[tex]\displaystyle \frac{d}{dt} \left( -0.25\cdot t^3+ 20.28 \cdot t - 47.2 \right) = \mathbf{-0.75 \cdot t^2 + 20.28} = 0[/tex]

Which gives

[tex]\displaystyle t^2 = \frac{20.28}{0.75} = \mathbf{27.04}[/tex]

t = √27.04 = 5.2

At the maximum rate of change, the number of weeks, t = 5.2

Plugging in the value of  t = 5.2 into the rate of change function gives;

n'(5.2) = -0.25·5.2³ + 20.28·5.2 + 47.2 = 117.504

The maximum rate of change of the crop's seed production is approximately 117 seeds per week.

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Two angles have a difference of 30 degrees. If the greater angle, a, and the smaller angle, b, are complementary, what is the measure of angle a?

Answers

Answer:

A=60

Step-by-step explanation:

Complementary means it's 90 degrees

60 and 30 have a 30 degree difference.

The measure of angle a is 60°

What are Complementary Angles?

When the sum of two angles is equal to 90 degrees, they are called complementary angles. For example, 30 degrees and 60 degrees are complementary angles.

Given data ,

The two angles are a and b

a and b are complementary

So , a + b = 90°

The difference of angle a and b is 30°

The greater angle is a and smaller angle is b

So , a - b = 30°

Now , we have two equations

a + b = 90°

a - b = 30°

Adding both equations , we get

2a = 120°

Divide by 2 on both sides , we get

a = 60°

Hence , the measure of angle a is 60°

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please answer this question if you know ​please answer it fast

Answers

Answer:

(a)

Step-by-step explanation:

It has already been answered on the picture.

(a) 1  + 0 = 1 ≠ 0

Answers please, and explain if you don't mind.

Answers

Alright so the parentheses mean (x, y) so basically you have to plug in the numbers in parentheses into the equation so here's what I got:

a. i
b. iv
c. ii
d. v

So then e must be iii, let’s check:
y = -x + 1
.5 = -.5 + 1 ✔️
.75 = -.25 + 1 ✔️
.875 = -.125 + 1 ✔️

So that’s how you would solve those equations. Hope this helps.

What is the slope of the line that passes
through the points (8,5) and (4, -9)?

Answers

Step-by-step explanation:

Find slope

m = (y2 - y1)/(x2 - x1)

m = (-9 - 5)/(4 - 8)

m = -14/-4

m = 7/2

Slope → 7/2

2.05218617 round 1 decimal place.

Answers

Answer:

  2.1

Step-by-step explanation:

The digit in the second decimal place is 5, which is more than 4. That means 1 must be added to the digit in the first decimal place when you do the rounding.

  2.05... rounds to 2.1

Answer:

2.1

Step-by-step explanation:

The digit in the second decimal place is 5, which is more than 4. That means 1 must be added to the digit in the first decimal place when you do the rounding.

Suppose that a randomly generated list of numbers from 0 to 9 is being used
to simulate an event that has a probability of success of 20%. Which of these
groups of numbers could represent a success?

Answers

Answer:

0, 1

Hope this helps :)

The group {2, 5, 8, 1, 3, 7, 0, 9, 4, 6} contains two "success" numbers (2 and 5) and eight "failure" numbers, so it could represent a success.

What is probability?

It is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

Example:

The probability of getting a head in tossing a coin.

P(H) = 1/2

We have,

To simulate an event that has a probability of success of 20%, we need to randomly generate numbers from 0 to 9 such that there is a 20% chance of getting a "success" number.

Since there are 10 possible numbers to choose from, 20% of them would be 2 "success" numbers.

So, any group of numbers that contains two "success" numbers out of 10 would represent a success.

For example,

The group {2, 5, 8, 1, 3, 7, 0, 9, 4, 6} contains two "success" numbers (2 and 5) and eight "failure" numbers, so it could represent a success.

Other groups with two "success" numbers would also be valid.

Thus,

The group {2, 5, 8, 1, 3, 7, 0, 9, 4, 6} contains two "success" numbers (2 and 5) and eight "failure" numbers, so it could represent a success.

Learn more about probability here:

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need help, i’ll give brainlist to whoever responds quick!!

Answers

Answer:

fraction is 175/200

that is the fraction I don't know what anything else is

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match the rates with their equivalent unit rates.
(DRAG AND DROP)

Answers

Answer:

I have placed it correct answers in the image above

two pigs weigh respectively 23 1/2 kilograms and 22 2/4 kilograms. what is the total weigth of the pigs?​

Answers

The total weight of the pigs is 36 kilograms

Answer:

Toral weight is 46 kilograms

Lucy received 56 of the 180 votes cast for class secretary. How many votes did she receive?

Answers

If Lucky received 56 of 180 votes cast, she received 56.  The answer is in the question.

Phone calls arrive at the reservation desk in a hotel. The arrival rate is constant throughout the day and the arrivals are independent of each other. The average arrival rate is 120 calls per hour. We are interested in the number of incoming calls over a one-minute time period. Using the Poisson probability distribution method compute the probability of receiving exactly 3 calls over a one-minute time period.
a. .20
b. .41
c. 1.41

Answers

Answer:

.52

Step-by-step explanation:

sorry

Write the quadratic equation whose roots are −4 and 2, and whose leading coefficient is 4.

Answers

Answer:

x²+2x-8

leading coefficient is 4

therefore equation is 4x²+x-2

an electronic book has a file size of 2.4 megabytes. what is the file size in megabytes of 16 of theses electronic books?

Answers

Answer:

38.4 Megabytes

2.4 x 16 = 38.4

Plz help I need help

Answers

Divide the weight given by the pounds given: 30/24 to get the unit rate of $1.25

Please help
what is 6 * 6 * 6 + 9 - 7?

Answers

Answer:

218

Step-by-step explanation:

6*6*6 = 216

216+9 = 225

225-7 = 218

Steve planted 6 dozen tomato plants and harvested an average yield of 104 tomatoes per plant. The next year Steve had a crop of 6,240 tomatoes with the same average yield per plant. How many tomato plants did Steve plant the second year?

Answers

Answer:

667680

Step-by-step explanation:

6240 times 104 i think

Answer:

He planted 60 tomato plants, or 5 dozen tomato plants.

Step-by-step explanation:

6 dozen = 6 × 12 = 72

He planted 72 plants and harvested 104 tomatoes per plant.

The next year he had a crop of 6,240 tomatoes, and also got 104 tomatoes per plant.

6,240/104 = 60

He planted 60 tomato plants, or 5 dozen tomato plants.

10 more than a number c is 3.

Answers

What is the question?

Solve $2y-18x=-26$ for $y$ .

Answers

Answer:

y=-13+9x

Step-by-step explanation:

We can add 18x to both sides:

2y-18x=-26 -> 2y=-26+18x

And then divide by 2:

2y/2=-26/2+18x/2 -> y=-13+9x.

2+3/4+2+3/8=what’s the total

Answers

Answer:

5 1/8

Step-by-step explanation:

4 + 3/4 + 3/8 =

3/4 + 3/8 = 6/8 + 3/8 = 9/8 = 1 1/8 + 4 = 5 1/8

⦁ If the sales tax is 7% on all purchases, how much must you set aside for sales tax on $300? Show your work

Answers

Answer:

Step-by-step explanation:

2

Answer:

2

Step-by-step explanation:

In an ice chest there are
10 waters,
6 fruit drinks and 7
sodas. Assume each container is the same size.
If a drink is chosen randomly, then what is the probability that a fruit drink is NOT chosen?

Answers

answer:
if the person wanted a fruit they would have took a fruit or a fruit drink but no they took a drink that is not a fruit drink

6 times the difference of a number and 3 is more than 24

Answers

Answer:

the number is 8

Step-by-step explanation:

8-3=5

6•5=30>24

expression: 6(x-3)>24

Aden spent $10 on a mug then sold it ,making 20% profit.How much did he sell the mug for?
A.$8
B.$10
C.$11
D.$12

Answers

Answer:

12$/D

Step-by-step explanation: 20% of 10 = 2

he spends 10 so -10 then sells for 120% of that which is 12

so, 10+2= 12

The answer is D. $12
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