hi, can someone help pls! Which of the following is a counterexample for the claim that √x^2 = x ?

a) x=1
b) x=-1
c) x=0
d) x=2

Answers

Answer 1

Answer:

Step-by-step explanation:

x=-1 is the counter example as ((-1)2)^(1/2)=1 and not -1.


Related Questions

please hurry and answer

Answers

Answer:

20

Step-by-step explanation:

Kyala =x+24

ze=x

in 2 years=2 (x+24)=2x+48

x= 2x+48

x=48

48-28=20

Can someone help me

Answers

the first one

jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

You and a friend are each driving a car in opposite directions. You both leave your house at the same time. If you are traveling at “a” miles an hour and your friend is traveling at “b” miles an hour, make up a formula to show how far apart the two cars are after 5 hours. Let “Y” represent the total distance.
Please help i need the formula too

Answers

Answer:

y = a - b(5) i think that's it

Step-by-step explanation:

Ifoeifflbfjriffifirifiidieirieieiririeieejnfrjejeidiejeeifjeifirjejee

how do you solve a quadratic equation with no A do you replace the A with a 0?

Answers

Answer:

yes

Step-by-step explanation:

Mrs. Tirado picked 5/6 pounds of lettuce from her garden. Mrs. Rampulla picked 2/3 less pounds than Mrs. Tirado. How much lettuce did they pick altogether?

Answers

Step-by-step explanation:

Total amount of lettuce = x pounds

Mrs. Tirado picked 5/6 pounds of lettuce from her garden.

5 / 6 * Total amount = 5/6 x

Mrs. Rampulla picked 2/3 less pounds than Mrs. Tirado.

Mrs. Rampulla = 2/3 (Mrs. Tirado) = 2/3 (5/6 x)

Mrs. Rampulla = 5/9 x

How much lettuce did they pick altogether?

Mrs. Rampulla + Mrs. Tirado

5/9 x  + 5/6 x

(25/18) x pounds


Jake is doing an experiment with bacteria in a petri dish and
an antibiotic that may kill the bacteria. The rate at which Jake
expects the antibiotic to kill the bacteria can be modeled by
the equation f(x) = 5,000(6), where x represents hours and
Rx) represents the number of remaining bacteria. As the time
approaches 10 hours, what value is f(x) approaching? (A.9D, RC
5, RS)

F) 0

G) 1

H) 5000

j) 2/9

Answers

Answer:

H) 5000

Step-by-step explanation:

1. Plug in numbers

10 = 5000*10

f(x) = 5000

While working at the drugstore, Grace earns $9.83 per hours. How many hours will it take grace to earn $49.15?

Answers

Answer:

5

Step-by-step explanation:

all you have to do is divide 49.15 by 9.83.

Help please this is 6th-grade math

Answers

5 and 6 will be my estimate

Step-by-step explanation:

✰ [tex] \underline {\underline{ \large{ \tt{G \: I \: V \: E \: N : }}}} \: [/tex]

Area of a triangle ( A ) = 49 inches²Let height of the triangle be ' x '. According to question , base of the triangle is twice the height ( i.e 2x ).

✰ [tex] \underline{ \underline{ \large{\tt{S \: O \: L \: U\: T \: I \: O\: N : }}}}[/tex]

[tex] \boxed{ \large{ \tt{Area \: of \: a \: triangle = \frac{1}{2} \: b \: \times \: h}}}[/tex]

Plug the values and then simplify!

⟶ [tex] \large{ \tt{49 = \frac{1}{2} \times 2x \times x}}[/tex]

⟶ [tex] \large{ \tt{49 = {x}^{2} }}[/tex]

⟶ [tex] \large{ \tt{ {x}^{2} = 49}}[/tex]

⟶ [tex] \large{ \tt{x = \sqrt{49}}} [/tex]

⟶ [tex] \large{ \tt{x = \sqrt{ {(7)}^{2} } }}[/tex]

⟶ [tex] \boxed{\large{ \tt{x = 7 \: inches}}}[/tex]

Again , Replacing values , we get :

[tex] \large{ \tt{Base \: ( \: b \: ) = 2x = 2 \times 7 = \boxed{ \large { \tt{14 \: inches}}}}}[/tex]

Therefore ,

The base of the triangle is [tex] \large{ \underline{ \tt{14 \: inches}}}[/tex].

The height of triangle is [tex] \underline{ \large{ \tt{7 \: inches}}}[/tex]

And we're done ! ✔

Hope I helped ! ♡

Have a wonderful day / night ! ツ

[tex] \underline{ \underbrace{ \mathfrak{Carry \: On \: Learning}}}[/tex] !! ✎

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

In August, James begins school shopping for his triplet daughters. One day, he bought 10 pairs of socks for $2.50 each and 3 pairs of shoes for d dollars each. He spent a total of $135.97. Write and solve an equation to find the cost of one pair of shoes.
Let ___ =
Equation:
Solution:

Answers

Answer:

2.50*10  350+d

Step-by-step explanation:

thats the answer up below

can you guy's help with both of these this is the last part

Answers

Answer:

x=35

3x35=105+16=121

5x35=175-54=121

I can't see the other shot. My answer is for the alternate interior angles.

HELP DUE IN 30 MINS!

13. Are the triangles similar? Yes or No

14. Which postulate justifies your answer to #13?



A. SSS~ Postulate


B. SAS~ Postulate


C. AA~ Postulate


D. They are not similar.

15. What is the similarity ratio (scale factor) of the larger triangle to the smaller triangle?

similarity ratio =??

Answers

Answer:

13. ...........................

The ratio of corresponding sides:

24/40 = 3/518/30 = 3/5

Congruent angles

∠ABE ≅ ∠DBC (vertical angles)Yes

14............................

SAS- two sides are similar and the included angle is congruent

15............................

Similarity ratio is 3/5 as calculated above

Two angles in a triangle measure 102° and 670. What is the measure of the third angle?
0 110
0789
1139
O 169°

Answers

Step-by-step explanation:

step 1. wow! 670° I think you mean 67°

step 2. the 3 internal angles of a triangle add up to 180°. let x be the third angle

step 3. x + 102 + 67 = 180

step 4. x + 169 = 180

step 5. x = 11°.

Thirty students at Eastside High School took the SAT on the same Saturday. Their raw scores are given next. 1,450 1,620 1,800 1,740 1,650 1,800 2,010 1,780 1,840 1,490 1,620 1,480 2,390 1,640 1,830 1,710 1,900 1,910 1,950 1,820 1,590 2,350 2,260 1,870 1,530 1,950 2,000 1,830 1,980 2,100 Consider a frequency distribution of the data that groups the data in classes of 1400 up to 1600, 1600 up to 1800, 1800 up to 2000, and so on. How many students scored at least 1700 but less than 2100

Answers

Answer:

Number of students who scored atleast 1700 but less Than 2100 = 17

Step-by-step explanation:

Given the data :

1,450 1,620 1,800 1,740 1,650 1,800 2,010 1,780 1,840 1,490 1,620 1,480 2,390 1,640 1,830 1,710 1,900 1,910 1,950 1,820 1,590 2,350 2,260 1,870 1,530 1,950 2,000 1,830 1,980 2,100

Class interval __ Frequency

1400 - 1599 ____ 5

1600 - 1799 ____ 7

1800 - 1999 ____12

2000 - 2199 ___ 3

2200 - 2399 ___ 3

Number of students who scored atleast 1700 but less Than 2100 = 17

Team A scored 6 points. Team B scored 42 points. Write the ratio of Team A's score to
Team B's score.

Answers

Not sure if it’s correct.. 6:42 is the ratio
6:42 is the ratio!! I calculated

Can someone please help me with math.

Answers

Answer:

D

Step-by-step explanation:

That is a negative correlation.  As x increases, y decreases.  Notice that as you read from left to right, the points are going down which means negative.

what is the equivalent slope intercept for -y + 9x =-5 A) y= -9x - 5 B) y = 5 + 9x C) y = 9x - 5 D) y = 9x + 5

Answers

Answer:

y=9x+5

Step-by-step explanation:

-y+9x=-5

-y=-5-9x

y=5+9x

y=9x+5

y=mx+b where m=slope and b=y-intercept

PLEASE HELP I WILL GIVE BRAINLIEST

Answers

Answer:

I think it's the fourth option?

Step-by-step explanation:

Hope this is the right answer and helps!

I think it’s 252ft3 because 3x14x6 is 252 then 1/4 is your 3

Help please !!! don't answer if you don't know!!!!

Answers

Answer:

7.2

4*6=24

24*7.2=172.8

A triangle's sides should be equal around 180.

                                                           

Answer:

20 m

Step-by-step explanation:

what is greater 15qt or 63 c

Answers

Answer: 63 c

Step-by-step explanation:

15qt equals to 60 c

63 c is larger

Jose paid $25 for 3 notebooks and 4 binders. Sarah paid $23 for one notebook and 5 binders. The system of equations to represent this situation is shown below. 3x + 4y = 25 X + 5y = 23

Help me please

Answers

3(23-5y)+4y=25

69-15y+4y=25

69-11y=25
-69. -69

-11y = -44
y= 4

Sharlene wraps a cylindrical package that has a height of 15 inches and
a radius of 3 inches. What is the package’s surface area?

Answers

Answer:

339.3 cubic inches

Step-by-step explanation:

SA (cyl) = 2πr² + 2πrh

SA = 2(3²)π + 2(3)(15)π

SA = 18π + 90π

SA = 108π

SA ≈ 339.3 in³

May someone please show the full steps please! I will mark brainlist. I’m having a hard time understanding this.

Answers

Answer:

x=12 y=6  m(ABC)=102  m(BCD)=78 m(DAB)=78

Step-by-step explanation:

alright mate so lets start with the properties of parallelogram:

Opposite angles are equal Sum of any two adjacent angles is 180degree

(there are more but we will use those here)

so lets start with 1st property for help:

m(BCD) is opposite angle for m(DAB) so those equations should be equal each other and this will give us a hint

[tex]6x+y=4x+5y\\2x=4y\\x=2y[/tex]            i just changed the places of x to be in one place and                                                                                                  s                                     same for y then divided both sides by 2

Now lets use the 2nd property (sum of two adjacent angles is 180)

m(ABC) is adjacent to m(BCD) so

[tex](7x+3y)+(4x+5y)=180[/tex]  add x to x and y to y it will be

[tex]11x+8y=180\\[/tex]  

Now we going to use the first one x=2y in this equation so we can deal with one variable

replace x with 2y so 11x will be 22y

[tex]22y+8y=180\\30y=180\\y=6[/tex]          added the y to y and then divided both sides by 30

[tex]x=2y \\x=2*6=12[/tex]

now we got x and y

then lets start to substitute every x and y in the equations

[tex]7x+3y\\7*12+3*6=102\\[/tex] [tex]4x+5y\\4*12+5*6=78[/tex]

    3.[tex]6x+y\\6*12+6=78[/tex]

now we got everthing hope i helped you sorry also for being late it toook alot to type it so you can understand

A box contains 48 snack-sized bags of popcorn.
The weight of the box when it is empty is 5 ounces.
The weight of the box with all the bags of popcorn is 35 ounces.
What is the weight, in ounces, of each bag of popcorn? Enter your answer as a decimal.

Answers

Answer:

0.625 ounces

Step-by-step explanation:

since the box weighs 5 ounces you subtract 5 from the total and divide 48 by 30


On their next training run, Pepe averaged a speed of į of a mile in 5
minutes, while Paula averaged of a mile in 2 minutes.
TH
If Pepe and Paula each ran at their individual pace for 60 minutes,
how many total miles did they cumulatively run?

Help!!

Answers

Answer is yeah so yeah yeah

Help! The answer must me exact! Will rate you if correct!!

Answers

Answer:

The Correct Answer is 7.071

Step-by-step explanation:

Trust me, if its wrong report me, if its right mark me brinaliest pls

Factor completely.
3x^2+30x+75=

Answers

Answer:

3(x+5)^2

Step-by-step explanation:

Answer:

3(x+5)(x+5)

Step-by-step explanation:

Factor 3x^2+30x+75

3x^2+30x+75

=3(x+5)(x+5)

Hope this helps!

Help Me Again Please

Answers

Answer:

22

Step-by-step explanation:

6+8^2/4

= 6+64/4

= 6+16

=22

Hope this helps :)

the answer will be 22

Of a total of 422 indigenous and immigrant languages spoken in the united states, 10 more spoken languages are indigenous than are immigrant. How many indigenous languages and how many immigrant languages are spoken in the united states?

Answers

201 - immigrant
221 - indigenous

Add 10 to indigenous and subtract 10 from immigrant.

Answer: 63

Step-by-step explanation: On Edge!!!!!!!!!

Alexia raises $75.23 for a charity. Sue raises 3 times as much as Alexia. Manuel raises $85.89. How much money do the three friends raise for the charity in all? ​

Answers

Answer: $386.81

75.23 times 3=219.69

219.69+75.23+85.89=$386.81

What is Mary's running speed in
miles per hour?

Answers

Answer:

4 to 6 miles an hour would be the answer

four to six miles per hour
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