Mathematics College

Ella is solving the equation (x+5)2=0 . She writes that the solutions are x=5and−5 .

Anne looks at her work and disagrees. She says that only x=−5 is a solution. Who do you agree with? Explain your reasoning.

Answers

Answer 1

Answer:

Anne

Step-by-step explanation:

Let's solve it by replacing x by 5, then -5.

(5+5)2=0

10*2=0

20=0

(-5+5)2=0

-5 and 5 cancel each other out, and 0 times anything is 0.

0=0

So Anne is correct.

--

hope it helps

Related Questions

PLEASE HELP!!! Area of trapezoids and triangles ​

Answers

i want to believe 30...?

Answer: 54 square inches and 18 square inches

Explanation:

The formula for the area of a trapezoid is the sum of the top and bottom bases divided by 2, multiplied by the height.

In the first picture the bases are 6 and 12, and the height is 6, so the formula would look like this:

[tex]\frac{6+12}{2} *6[/tex]

=[tex]\frac{18}{2} *6[/tex]

=[tex]9*6[/tex]

=54

54 [tex]in.^{2}[/tex] is the answer to the first problem.

Following the same method, we can do the next problem the same way:

[tex]\frac{4+8}{2} *3[/tex]

=[tex]\frac{12}{2} *3[/tex]

=[tex]6*3[/tex]

=18

18 [tex]in.^{2}[/tex] is the answer to the second problem.

One angle of a right triangle measures 75º. What is the measure of the other acute angle?

Answers

15
All triangles have 180 degrees. A right angle has 90 degrees. 90+75=165 180-165=15

What is the value of y=8−3x when x=5?

When x=5, y=

Answers

Answer:

-7 will be the answer.

Step-by-step explanation:

By Putting the value of x, we get:

y=8-3x

y=8-3(5)

y=8-15

y= -7

A large clock in a town square has a minute hand that is 10 feet long. Which value is the best estimate of
how many degrees the minute hand moves from 4:00 - 4:40?

Answers

Answer: 240 degrees

Step-by-step explanation: minute hand makes 360 degree circle in hour.

There is no influence for the length of hand in this case.

40 minutes is 2/3 hours. 2/3 ·360 degrees

Five less than twice the sum of a number n and twelve

Answers

5-2(n+12) that’s the equation. I hope this helped

HELPP QUICKK PLEASSEEE​

Answers

Answer:

Questions are blur can you post a much clearer one?

please help me out on this..............

Answers

Answer:

Option #2: 32 ÷2

Step-by-step explanation:

Take Note: There are 2 cups in a pint.

Since we are converting cups TO pints.... the number should (logically) be smaller. That eliminates the last two options.

Referring back to our note, it is only sensible to eliminate the first option since there are only 2 cups per pint, NOT 4.

In the end, you should have gotten option 2 which is 32÷2.

What is the value of 3 1⁄4 increased by 2 1⁄6?

Answers

65/12 is they answer you’re looking for

Which graph shows the solutions to the inequality? Please help ASAP!

Answers

Answer:

A1/A2=b1/b2 is not equal to C1/c2

110% into simple fraction form​

Answers

Answer:

11/10 or 1 1/10

Step-by-step explanation:

110%=110/100

Now let's simplify 110/100:

11/10

Hope this helped! :)

Answer:

1 1/10

Step-by-step explanation:

Hope this helps and have a great day!!!!

You may remember that the perimeter of a rectangle is P=2(W+L) where W is the width and L is the length. Suppose that the perimeter of a rectangle is 44 feet, and the length is 8 feet more than the width. Find the width of the rectangle, in feet.

Answers

Answer:

44=2[(w+8)+w]

44=4w+16

28=4w

w=28/4

w=7feet

How many solutions can be found for the equation 5x + 3(x − 1) = 10x − 2x − 3?

Answers

Answer: Infinite many solutions

Step-by-step explanation:

Given

5x+3(x-1)=10x-2x-3

Expand Parenthesis

5x+3x-3=10x-2x-3

Combine like terms

8x-3=8x-3

Subtract 8x on both sides

8x-3-8x=8x-3-8x

-3=-3

Add 3 on both sides

-3+3=-3+3

0=0

Any number will work on both sides, therefore, there are infinite solutions

Hope this helps!!: )

Please let me know if you have any questions.

The difference is 6?

Answers

Answer:

i dont know

Step-by-step explanation:

there is no questions

Speed equals distance multiplied by time. *
A: True
B: False

Answers

True because I learned it literally right now
A: True

spear does equal distance multiplied by time

PLESE HELP WILL MARK BRIANLIEST

Answers

Answer:

1. a=-9  b=13  c=-1

2. a=1  b=1  c=-11

soup is 3 cans for $0.82, so each can of soup is $0.2733. how much does it cost for each one?

Answers

It would be $0.27 for each can

Find the range of the following data set. 451, 376, 380, 470, 546, 481
​

Answers

Answer: 170

Steps:
Range- the difference between the greatest and smallest value of a data set.

546 - 376 = 170

Answer:

170.

Step-by-step explanation:

jus did it

can i get brainliestttt

Please can someone help me thank you

Answers

Answer:

(a) Rome= 11 degrees

Munich= 5 degrees

Difference = 11-5 = 6 degrees

(b)

Oslo= 2 degrees

At 6pm= 2+5= 7 degrees

Which is a true statement based on the box plots below?
I WILL GIVE BRAINELY BECAUSE I NEED THIS DONE FAST BY TODAY

Answers

Question:

Which is a true statement based on the box plots below?

Answer:

It is C because the interquartile range is larger than the other one.

Hope This Helps :)

BRAINLIEST FOR CORRECT ANSWER, IM FAILING SCHOOL AND NEED HELP ASAP. EVEN OFFICIAL HELP COUNTS

Answers

6 and 8 are vertical angles

13. Jessica has taken 8 quizzes. The mean of her scores is 92. Her first 6 scores are shown.
96, 90, 88, 92, 94, 90
If Jessica got the highest score possible on her seventh quiz, what score did she get on her
eighth quiz? What would be her median score Show your work and explain your reasoning.

Answers

Answer: Median= 91; 8th quiz score=86

Step-by-step explanation: The sum of the scores is 8×92=736. Subtract the 6 given scores and then a 100 for the seventh quiz to find the score she got on the 8th quiz, this is an 86. Now that you have all the scores, arrange them all in the least to greatest order and find the average of the middle two numbers (median), which is 91!

The table shows Kayden’s quiz scores for a semester. Consider this is the whole set of quizzes. Consider that Kayden took all the possible quizzes for the semester. What are the mean and the standard deviation, rounded to the nearest hundredth, for the quiz data?
Calculate the Margin of error, and give the 95% confidence range.
X

45

48

42

47

43

Mean=





Standard Deviation =

Answers

Answer:

huh what do you mean

Step-by-step explanation:

im really sorry

Help due today asap Plaese help

Answers

Answer:

A

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

got it right on the test

What is the value of | -5 | ?

Answers

Answer:

if u mean absolute value it is 5.

the value is always positive an dmeans how far is it from the numberline

Step-by-step explanation:

help please, i need it asap. thank you

Answers

Answer:

x = 5

Step-by-step explanation:

[tex]\frac{3}{x}[/tex] = [tex]\frac{4.5}{7.5}[/tex]

cross multiply

4.5x = 7.5(3)

4.5x = 22.5

Divide

x = 5

Which graph represents an exponential function?

Answers

The second one. The graph grows as x approaches infinity, without touching the origin.

Which value of x makes the equation 9=34x true?
Select one:

x = 12

x=814

x = 6

x=634

Answers

did you write it wrong none of the options are possible answers the real answer is 9/34

Find the perimeter of the parallelogram shown.
7 yd
8 yd
5 yd
.
A26 yd

Answers

Answer:

It will be half of the original size.

HOPE I HELPED!

GIVE BRAINLIEST PLEASE!

Step-by-step explanation:

40 POINTS !! 40 POINTS !!

PLEASE HELP , DONT SKIP !

NO LINKS OR FILES.

Answers

Answer:

2 potatoes

Step-by-step explanation:

10 ×1/5 =2×1=2

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

which equation has the solutions x equals 1 plus or minus the square root of 5​

Answers

Answer:

d. x2 – 2x – 4 = 0

Step-by-step explanation:

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