Help Solve???????????

Help Solve???????????

Answers

Answer 1
the answer is -m^2 - 7m + 21
Answer 2

Answer:

-m^2 - 9m + 3 (the third one)

Step-by-step explanation:

separate the terms and group them with their equivalents (integers:inetgers, variables: variables, etc.) like so:

4m^2   &   -5m^2    = -m^2

-8m      &   -m          = -9m

12         &    -9          = 3

add them all together to get the expression -m^2-9m+3


Related Questions


answer this for a brainly thingy

Answers

Answer: c

Step-by-step explanation:

Answer:

what is the question being asked?

Step-by-step explanation:

1p
A man travelled by a car for 3 days. He covered 1080 km each day. He
drove the first day 10 hours at 108 km per hour, the second day 12 hours at
90 km per hour and third day 18 hours at 60 km per hour. What has his
average speed.
O 81 km per hour
O 80km per hour
O 83 km per hour
82 km per hour​

Answers

Answer:

O 81 km per hour

Explanation

Given parameters:

Number of days traveled  = 3 days

Distance covered on the first day  = 1080km

Time of travel  = 10hrs

Rate of travel  = 108km/hr

Time of travel on second day = 12hrs

Rate of travel  = 90km/hr

Time of travel on third day  = 18hrs

Rate of travel  = 60km/hr

Unknown

Average speed  = ?

To find the average speed, we sum the distances and divide by the sum of the time.

  Average speed  = [tex]\frac{Total distance}{total time}[/tex]

we do not know the second and third distances;

  Distance  = speed x time

D2  = 90 x 12 = 1080km

D3  = 60 x 18  = 1080km

    Now;

  Average speed  = [tex]\frac{1080 + 1080 + 1080 }{10 + 12 + 18 }[/tex]

 

 Average speed  = [tex]\frac{3240}{40}[/tex]   = 81km/hr

The average speed is 81km/hr

I would like someone to help please, find the reciprocal of 10 1/2

Answers

Answer:

2/11

Step-by-step explanation:

10 1/2 is the same as 11/2. The reciprocal of 11/2 is 2/11

Jon has 60,500 cars. He is a car dealer. 60% of the cars are green. How many cars are green?

Answers

Answer:

36300

Step-by-step explanation:

Answer:

The answer is 36,300.

Step-by-step explanation:

Okay, here's what we know, Jon has 60,500 cars and 60% of those cars are green. And what we are trying to figure out is how many cars are green.

So we need to convert the problem to an equation using the percentage formula: P% * C = G.

P stands for the percentage, C stands for the total number of cars, and G stands for the total number of green cars.

1. The percentage of green cars is 60% of all the cars. The variable C is 60,500, so the equation is 60% * 60,500 = G.

2. Convert 60% to a decimal by removing the percent sign and dividing by 100: 60/100 = 0.6.

3. Substitute 0.6 for 0.6% in the equation: 60% * 60,500 = G.

4. G becomes 0.6.

5. Do the math: 0.6 * 60,500 = 36,300.

6. G = 36,300.

So 60% of 60,500 is 36,300 and 36,300 cars are green

Let's double check our answer with the original question: What is 60% of 60,500?

Multiply 0.6 * 60,500 = 36,300

So yes, our answer is correct and Jon has 36,300 green cars.

What is the value of the expression 2^2 + 8^2 ÷ 2^2?

8
10
17
20

Answers

4 + 64 / 4
68/4
17
therefore answer is C, 17.

Answer:

answer is 20

Step-by-step explanation:

2^(2) =4

8^(2) =64

2^2 =4

4+64-:4

64-:4=16

16+4=20

An appliance manufacturer claims to have developed a new toaster oven that consumes an average of no more than 250 W. From previous studies, it is believed that power consumption for toaster ovens is normally distributed with a standard deviation of 18 W. A consumer group suspects the actual average is more than 250 W. They take a sample of 16 toaster ovens and calculate the average consumption to be 260 W. Answer the following questions:

a. Would you reject the Null at 1% level of significance?
b. Would you say the toaster oven consumes more than 250 W of power if you are willing to commit a Type 1 Error of 2.5%?
c. What is the cut-off Watts at 2.5% level of significance?
d. In reality, suppose the average power consumption is 265 W. What is the Type II error when Type I error is set at 2.5%?
e. What is the cut-off Watts at 1% level of significance?
f. In reality, suppose the average power consumption is 265 W. What is the Type II error when Type I error is set at 1%?
g. Based on these calculations, what happens to Type II error if Type I error is lowered?
h. Based on these calculations, what happens to Type I error if Type II error is increased?


Answers

Answer:

a. No the null hypothesis cannot be rejected at  1% level of significance as the calculated value of z= 2.222 which lies with in 2.333

b. Yes for the  Type 1 Error of 2.5% we say the toaster oven consumes more than 250 W of power because the calculated value 2.22 lies outside the region for 1.96

c. The cut-off at 2.5% level of significance is 258.82 W.

d. 0.85 is the area for Type 2 error.

e. The cut-off at 1% level of significance is 260.485W.

f.  0.154 is the area for Type 2 Error

g. The  Type 2 Error is increased when Type 1 Error is decreased.

h. The  Type 1 Error is decreased when Type 2 Error is increased .

Step-by-step explanation:

The answer is attached.

. As the treasurer of her daughter’s Girl Scout troop, Laney collected money for some girls and adults to go to a 3-day camp. Each girl paid $75 and each adult paid $30. The total amount of money collected for camp was $765. If the number of girls is three times the number of adults, how many girls and how many adults paid for camp?

Answers

Answer: I believe it’s 3 adults and 9 girls.

Step-by-step explanation:

The perimeter of a rectangle is 100 ft , if the wife is 20 ft what is the value of the length?

Answers

Answer:

30

Step-by-step explanation:

since the width is 20, there are 2 sides, so multiply by 2 and it's 40. Subtract 40 from 100 and you get 60. 60 is both lengths combined, so divide by 2 and you have 30 as your length. :)

7. Jenny wants to buy some shoes. She found the shoes at the store for a 10 points
price of $35. The store is having a 15% off everything sale. How much
does Jenny pay for the shoes not including tax?*
$36.75
$40.25
$29.75
$5.25
had were nurnle. If there were 10 points

Answers

Answer:

Step-by-step explanation:

How do I make my question?

It is known that Ray AP bisects angle CAT. If m<CAT = 5x+17 and m<PAT = 3x-4, then determine the value of x.​

Answers

Answer:

x = 25

Step-by-step explanation:

It is given that, ray Ray AP bisects angle CAT. It means,

[tex]\angle CAT=\angle CAP+\angle PAT[/tex]

Also, [tex]\angle CAP = \angle PAT[/tex]

It gives, [tex]\angle CAT=2\angle PAT[/tex]

ATQ,

[tex]\angle CAT = 5x+17 \ \text{and}\ \text{PAT}=3x-4[/tex]

So,

[tex]5x+17=2(3x-4)\\\\5x+17=6x-8[/tex]

Taking like terms together,

[tex]5x-6x=-8-17\\\\-x=-25\\\\x=25[/tex]

So, the value of x is 25.

Match each unit rate to its ratio. PLEASE HELP

Answers

Answer:

1½ gallons per minute3 gallons per minute ⅔ gallon per minute 9 gallons per minute

Step-by-step explanation:

You have to divide both numbers.

-3 1/5+(-6 1/2) please help quickly

Answers

Answer:

Exact Form:

-97/10

Decimal Form:

−9.7

Mixed Number Form:

-9 7/10

Answer:

i think that it is -9 7/10

Step-by-step explanation:

-3 1/5+(-6 1/2. 3+6=9 1/5+1/2=7/10. and that would make the final answer -9 7/10

Solve 2x + 5y = −13
3x − 4y = −8

Answers

Answer: 100

Step-by-step explanation: 5+5+10+30-50+100

Which of the following is an informal proof of the given conjecture? Conjecture: All squares are similar

Answers

Answer:

the last one, i just got 100%

Step-by-step explanation:

Option 4 : Square A has side lengths a₁ =3, a₂= 3 and Square B has side lengths b₁=6,b₂=6 Then show that the ratio of corresponding side length is equal:  a₁ /a₂=b₁/b₂,  3/3=6/ 6  is the informal proof of the given conjecture.

What is informal proof?

Informal proofs are used to proof a theorem in different methods of  proving theorems and steps of the proof are not formally framed.

Mostly by taking a particular example a theorem is proved.

All square are similar.

This statement is true

Option 1 is false

Option 2 is formal proof as sides of squares A and B are taken as variables x and y therefore this proof can be used for any pair of two squares

Option 3. is wrong proof as the  two sides of square A and B are taken unequal but square has all four sides equal.

Option 4 is correct proof but it is not a formal one as a particular example is taken to proof with statement

Therefore option 4 is the correct option that show the informal proof of the given statement.

Also, learn more about Informal proofs from the link below:

https://brainly.com/question/13419413

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Can u give me 6 and 7​

Answers

Answer: if you need the relationship angle 6 and 7 are vertical angles

Step-by-step explanation:

find the coordinate of the midpoint of the segment with the given endpoints -7 and 8

Answers

Answer:

The coordinate of the midpoint is 1/2

Step-by-step explanation:

Midpoint

The midpoint of a segment defined in a one-dimension system is

[tex]\displaystyle \bar x=\frac{x_1+x_2}{2}[/tex]

Where x1 and x2 are the coordinates of the points.

The given segment has endpoints x1=-7 and x2=8, thus:

[tex]\displaystyle \bar x=\frac{-7+8}{2}[/tex]

[tex]\displaystyle \bar x=\frac{1}{2}[/tex]

The coordinate of the midpoint is 1/2

A triangle has sides measuring 5m2+3m−2, 5m2+3m−2, and8m2−4m+3. What is its perimeter? Question 5 options: 18m2−2m+3 18m2+2m−1 18m2+4m−1 18m2+10m+3

Answers

Answer:

Just add the sides

Step-by-step explanation:

What is the greatest common factor of 12,18,26

Answers

3 is the correct answer

In a certain​ chemical, the ratio of zinc to copper is 3 to 17. A jar of the chemical contains 799 grams of copper. How many grams of zinc does it​ contain?

Answers

Answer:

let's see what to do buddy...

Step-by-step explanation:

[tex] \frac{zinc}{copper} = \frac{3}{17} \\ \\ \frac{zinc}{799} = \frac{3}{17} [/tex]

Multiply the sides of the equation by 799

[tex]zinc = \frac{3}{17} \times 799 \\ \\ zinc = \frac{3}{17} \times 17 \times 47 \\ \\ zinc = 3 \times 47 = 141 [/tex]

So A jar of the chemical contains 141 grams of zinc.

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

John is splanting a garden. The width of the garden is 3 and 3/4 yard. The length of the garden is 4 1/2 yards. What is the area in square yards of the garden.

Answers

Answer:

tsuguduvidtdihuz4syh9h54f9i84g0u5d8hiztg9g6g

Examine the three graphs shown below. Which graphs have the same domain

Answers

Sorry can’t answer the question because there is no picture of the graphs.
Thier is no graph gwuwiwbhe

Someone help me please

Answers

Answer:

x=6.4

Step-by-step explanation:

4^2+5^2=x^2

x=6.40

Plaase help me ...................

Answers

270,000,000,000.0001

Which scenario could represent the expression −100÷5?


A baker evenly places 100 cookies among 5 sheet pans. How many cookies does the baker place on each sheet pan?

A baker evenly places 100 cookies among 5 sheet pans. How many cookies does the baker place on each sheet pan?

A group of 5 friends decide to split a debt of $100 evenly among each other. How much does each friend owe?

A group of 5 friends decide to split a debt of $ 100 evenly among each other. How much does each friend owe?

A person eats 5 cups of popped popcorn for a total of 100 calories. How many calories are in each cup of popped popcorn?

A person eats 5 cups of popped popcorn for a total of 100 calories. How many calories are in each cup of popped popcorn?

A principal evenly splits 100 students into 5 teams for a field day. How many students are on each team?

A principal evenly splits 100 students into 5 teams for a field day. How many students are on each team?

Answers

Answer:

_20

Step-by-step explanation:

that is my answer I just use calculator and I get that answer

Shureka Washburn has scores of 81, 67, 79, and 43 on her algebra tests. Use an inequality to find the scores she must make on the final exam to pass the course with an average of 71 or higher, given that the final exam counts as two tests.

Answers

Answer:

72+67+82+79=300

300/4=75

300+81+81=462

462/6=77

Step-by-step explanation:

Why is it important to know how to change dissimilar fractions to similar fractions especially in adding and subtracting fractions ?

Answers

Answer:

Fast, since we can't explicitly add or subtract them. This will lead us to an incorrect response.  

Step-by-step explanation:

In this question we assume a value and solve its value which can be defined as follows:

Let the value:

[tex]\to \frac{3}{2}+\frac{4}{5}\\\\[/tex]

solve the above value by taking LCM that is equal to 10

[tex]\to \frac{15+ 8}{10}\\\\\to \frac{23}{10}[/tex]

when solving a uniform motion problem, how does drawing a diagram of the situation help you

Answers

Answer:

Uniform motion always travel in equal distances in equal intervals of time. So the graph will always be constant.

Once you draw the diagram of a uniform motion, when it comes to plotting points you can easily identify if the points go in a constant rate(uniform) or in  uneven distances(non-uniform).

Consider the tables.
Which table shows input and output values that
represent a quadratic function?
Table A
x
fx)
-10
8
-8
4
-6
0
4
4
2
48
O Table A
O Table B
Table B
X
fx)
46
--10
-1,002
8
-514
4
-66
-218
Table C
O Table D
-2
410
Table C
-10
1,002
8
802
46
602
4
402
12
202
fix)
Table D
X
f(x)
-10
-112
-8
--76
-6
1148
4
28
2
16
Next
Submit
Mark this and retum

Answers

Answer:

i think its a

Step-by-step explanation:

The ratio of the change in the y and x values, in the table gives the slope

graph of the linear function.

Correct response:

The slope of the linear function is -6

What is slope?

The slope of a line is defined as the change in y coordinate with respect to the change in x coordinate of that line. The net change in y coordinate is Δy, while the net change in the x coordinate is Δx. So the change in y coordinate with respect to the change in x coordinate can be written as, dx/dy.

here, we have,

Method used for finding the slope

From the given table, we have;

The first difference of the y-values = 2 - 8 = -6 = Constant

The rate of change of the x-values = 1 = Constant

Therefore;

The function is a linear function;

The slope, m, is given by the formula;

m = y2 - y1/x2-x1

Taking a pair of points as follows;

(0, -4) = (x₁, y₁)

(2, -16) = (x₂, y₂)

We have;

m = -6

The slope of the linear function, m = -6

Learn more about linear functions here:

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Complete question:

The table represents a linear function.

What is the slope of the function?

0-6

O 4

х

-2

-1

0

1

2

у

8

2

-4

-10

-16

04

O 6

Mark this and retum

Save and Exit

Next

Submit

Which problem would be best solved by dividing decimals?

Answers

Answer:C

Step-by-step explanation:

I NEED HELP PLEASE!!!!!!!!!!
Perry wants to project a movie from his phone to a screen on the wall. The side
length of the screen is 56 in. The scale from the screen to the phone is 7 in. to 1 in.
What is the side length of Perry's phone? Show your work.

Answers

Each 7 inches of the tv are equal to one inch of the phone. Therefore Divide 56 by 7 you get 8 56/7=8

The side length of perry's phone will be 8 inches.

What is Equation Modelling?

Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.

Given is Perry who wants to project a movie from his phone to a screen on the wall. The side length of the screen is 56 in. The scale from the screen to the phone is 7 in. to 1 in.

Assume the side length of perry's phone be [x] inches. Then, we can write the proportion as -

56/x = 7/1

x = 56/7

x = 8

Therefore, the side length of perry's phone will be 8 inches.

To solve more questions on equation modelling, visit the link below-

brainly.com/question/6593383

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