Please explain why if you no the answer

Answers

Answer 1

Answer:

No, she isn't

Step-by-step explanation:

(-2)² is basically -2 x -2, which we know is 4.

-2² is slightly different. In this case, you don't consider it as the square of -2, but you do the square ignoring the negative sign, and then add it at the end.

So think about it like this,

We do 2² first, and then add the minus, so it becomes -4 instead of positive 4. Does that make sense?

Answer 2

Answer: Incorrect

Step-by-step explanation:

Rule :

[tex](-10)^2=| -10|^2 =100 \\\\ -10^2=-(10)^2=-|10|^2=100[/tex]

Then :

[tex]\rm -2^2=-|2|^2=-4 \\\\ (-2)^2= |-2|^2=4 \\\\ Then : \\\\ -2^2 =(-2)^2 \\\\ -4 \neq 4[/tex]

Related Questions

what is the median of this data set?
16,21,28,30,34,45,58,60

Answers

Answer:

Step-by-step explanation:

the median in a data set is the middle number. first, you are going to want to order the numbers in numerical order.

this is what it would look like.

16, 21, 28, 30, 34, 45, 58, 60

(basically how it is in the problem lol)

since there's an even number of numbers in the set, you have to take the mean of the two middle numbers. in this case, the two middle numbers are 30 and 34.

you take the mean of numbers by adding them, and then dividing them based on the number of numbers. (sorry if that doesn't make sense, just look down ehe)

(30+34)/2

we divide by two because there are two numbers.

(30+34)/2

(64)/2

if this didn't make sense - sorry - but you can watch this video: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/mean-and-median/v/mean-median-and-mode

it's a short 3 minute video :))

hope this helped!!

Remove the largest possible common factor. Check your answer by multiplication.
35x3 + 21x2 + 28x

Answers

Answer:

Step-by-step explanation:

I need help on this it's due in 10 minutes

Answers

Answer:

B, no, yes, no, no, no, 225

Step-by-step explanation:

Working on math right now!

Answers

Answer:

Hi! The answer to your question is A. [tex]5^{4} * 4^{8}[/tex]

Step-by-step explanation:

☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆

☆Brainliest is greatly appreciated!☆

Hope this helps!!

Stay Safe!!!

- Brooklynn Deka

A library checks out seven fiction books an hour. They check out five times as many non-fiction books per hour. How many nonfiction books do they check out per hour?

Answers

Answer:

35 non-fiction books/hour

Step-by-step explanation:

They checkout five times as more than nonfiction fiction is 5 so multiply that times 7 and you get 35

A silicon wafer is textured to minimize light reflection. This results in a surface made up of square pyramids. Each triangular face of one of the pyramids has a base of 5 micrometers and a height of 5.6 micrometers. Find the surface area of the pyramid, including the base.

Answers

Answer:

86.33 square micrometers

Step-by-step explanation:

The formula for the Surface Ares mma is given as :

A=a² + 2a √a²/4+ h²

a = base edge = 5 micro meters

h = height = 5.6 micro meters

=5²+2× 5 × √5²/4+ 5.6²

= 86.32699 square micrometers

≈ 86.33 square micrometers

24. Suppose the area of the sail shown in the photo at the left is 110 ft. Find the dimensions of the sail.

Answers

So basically what you need here first is to find the disciple and reverse it, then you will have your answer.

Anyone know how to answer this question?

Answers

Answer:

Step-by-step explanation:

a cube has edges measuring 5 inches. Find the surface area of the cube.

Answers

It will be C. Hope this helps! Mark brainly please!

I really need help with 9 and 10. If you can help I’ll figure out how to give your brainliest.

Answers

Answer:

2 and 5[89] .........................

Special right triangles how do you solve them

Answers

The interior angles of any triangle must add up to 180° in measure. Right angles have measure 90°, so the missing angles in both triangles here have measure 45°.

In a 45°-45°-90° triangle, the legs and hypotenuse occur in a ratio of 1 : √2. This means

(1) x = 48 √2

(2) 88 = √2 x → x = 88 / √2 = 44 √2

You could also set up trigonometric equations to solve for x in each case:

(1) cos(45°) = 48 / x → x = 48 / cos(45°) = 48 / (1 / √2) = 48 √2

(2) cos(45°) = x / 88 → x = 88 cos(45°) = 88 (1 / √2) = 44 √2

Step-by-step explanation:

The interior angles of any triangle must add up to 180° in measure. Right angles have measure 90°, so the missing angles in both triangles here have measure 45°.

In a 45°-45°-90° triangle, the legs and hypotenuse occur in a ratio of 1 : √2. This means

(1) x = 48 √2

(2) 88 = √2 x → x = 88 / √2 = 44 √2

You could also set up trigonometric equations to solve for x in each case:

(1) cos(45°) = 48 / x → x = 48 / cos(45°) = 48 / (1 / √2) = 48 √2

(2) cos(45°) = x / 88 → x = 88 cos(45°) = 88 (1 / √2) = 44 √2

If you answer this you're HOT!!!!!

For the following question, determine whether the two are similar. If so, give the scale factor of the figure to the larger figure

Answers

Answer:

Yes, 1:3.

Step-by-step explanation:

Each of the numbers on figure 2 are 3 times the number on figure 1.

In illustrating combination question, during conference meeting there are 7 guests bumped their elbow instead of shake hand in greeting each of other to observe the health protocol ,and show the solution please...

Answers

dic Head bc you are slow and you asking Brainly for the answer

Need math helps plzzzz no links or imma report u 20 points plzzz helps

Answers

Answer:

the answer is (c)

Step-by-step explanation:

-(-1)-13= 1-13=-12

Answer:

-1

Step-by-step explanation:

You need to take -13 behind the = sign and it will become +13. Now -12+13=-1. Again it is -x because of which 1 will be divided by - and the answer will be -1

yoo can some on help im just a dud that suck a ixl

Answers

I think the answer is 58, but im not 100% sure so im sorry if it is wrong

If the probability that it will rain
tomorrow is 3/8, what is the
probability that it will not rain?

Answers

Answer:

5/8

Explanation: 8/8 - 3/8 = 5/8

Answer:

0.625

Step-by-step explanation:

1-3/8 total probability is 1 thus you take the probability that it will rain from 1 and get the answer

7th grade math help me pleaseee

Answers

Answer:

He bought 26 stamps

Step-by-step explanation:

13.66=.39x+4.30

9.36=.39x

26=x

Answer:

24 stamps

Step-by-step explanation:

13.66 - 4.3 = 0.39s

9.36 = 0.39s

Divide both sides by 0.39

24 = s

Or turn it:

s = 24

O número -3 é a raíz da equação x² - 7x - 2c = 0. Nessas condições, determine o valor do coeficiente c: A) 7 B) -2 C) -3 D) 15 E) NDA

Answers

Responder:

c = 15

Explicação passo a passo:

se -3 é a solução para a expressão x² - 7x - 2c = 0, para obter c, vamos substituir x = -3 na equação (uma vez que é uma raiz)

x² - 7x - 2c = 0

(-3) ² - 7 (-3) - 2c = 0

9 + 21 - 2c = 0

30 - 2c = 0

30 = 2c

Trocar

2c = 30

c = 30/2

c = 15

Portanto, o valor de c é 15

find the value of y in the diagram below.

Answers

9514 1404 393

Answer:

Step-by-step explanation:

The diagram shows that 4y = 20.

Then y is one of 4 equal parts, so y = (1/4)(20) = 5.

The value of y is 5.

Will mark brainlist PLSSSS HELPPPPPP

How many of each different 2-D shapes do you see?

Answers

Answer:

Hexagon and rectangle

Step-by-step explanation:

If you are only counting 1 of each shape then 2

If counting all shapes I would say 8

Pepe compró una caja de chocolates en $5.950, incluido el 19% de IVA. ¿Cuál es el precio de la caja de chocolates sin el IVA?

Answers

Answer:

$4819.5

Step-by-step explanation:

Pepe bought a box of chocolates for $ 5,950, including 19% VAT. What is the price of the box of chocolates without VAT?

The price of chocolates = $5,950

VAT = 19%

We need to find the price of the box of chocolates without VAT.

VAT is applied on the Cost price of the object.

Price = $5,950 - 19% of $5,950

[tex]=5950- 5950\times \dfrac{19}{100}\\\\=\$4819.5[/tex]

So, the price of the box without VAT is equal to $4819.5.

An electrician charged a fee of $45 plus $60 per hour to come to Ed's house and make a repair. How many hours did the repair take if the total bill was $120.

Answers

Answer:

1 hour and 15 minutes

Step-by-step explanation:

$120 - $45 = $75

$75 ÷ $60 = 1.25 hours or and 1 hour and 15 minutes

PLEASSEE HELP MY ASSIGMENT IS ALMOST DUEEE!!! PLEASE HELP MY I WILL GIVE YOU BRAINLEST

Answers

Answer:

ill help you whats the question

Step-by-step explanation:

Answer:

what do we answer I see nothing

Step-by-step explanation:

tell whether a triangle can have the given angle measures:
47°, 109°, 23°

Answers

Answer: No

Explanation: All the angles of a triangle has to add up to 180. The angles you provided adds up to 179, which does not equal 180. That means it can’t be a triangle.

Answer:

Step-by-step explanation:

47 + 109 + 23 = 179

But the angle sum of a triangle is 180.

HELPP ME PLEASE!!!!
don’t use for points or i’ll report you.

Answers

c = -4 that’s the answer if you didn’t see my comment

help please ! I dont understand this question

Answers

Answer:

x = 4

Step-by-step explanation:

all angles in triangle add to 180

90+70=160

180-160=20

20÷5=4

Which transformations can be used to map a triangle with vertices A(2, 2), B(4, 1), C(4, 5) to A’(–2, –2), B’(–1, –4), C’(–5, –4)? a 180degree rotation about the origin a 90degree counterclockwise rotation about the origin and a translation down 4 units a 90degree clockwise rotation about the origin and a reflection over the y-axis a reflection over the y-axis and then a 90degree clockwise rotation about the origin

Answers

The transformations that can be used to map a triangle with vertices A(2, 2), B(4, 1), C(4, 5) to A’(–2, –2), B’(–1, –4), C’(–5, –4) is C. a 90 clockwise rotation about the origin and a reflection over the y-axis

What is a Transformation?

This refers to the mathematical process where one figure or expression is changed from one form to another that has or contains a similar value.

Given the pair of points (x, y) in the original image, it has been transformed to (-y, -x).

If we allow ABC to be first transformed onto A"B"C" by a 90° clockwise rotation, this would result in:

B(4, 1) being mapped onto B''(1, -4).

Therefore, the rule mapping ABC to A"B"C" is (x, y)→(y, -x)

With this, we can conclude that the transformation that maps (y, -x) to (-y, -x) is a reflection with respect to the y-axis

Option C is the correct transformation.

Read more about transformations here:

https://brainly.com/question/4451635

#SPJ1

Answer:

Step-by-step explanation:

Find the area of a circle with radius 6yd.
Use the value 3.14 for and do not round your answer.
Be sure to include the correct unit in your answer.

Answers

Answer:

X30

Step-by-step explanation:

The answer is 113.04 yd^2

Write at least two operations that have the value - 2/4.

Answers

Answer:

(-1)- (-1/2)= -0.5

Step-by-step explanation

-0.5 = to -2/4 in fraction

-0.5 in a fraction equals -2/4

and heyo

what is (100×23)+46
also i just need my question to be longer so hi

Answers

Answer:

(100×23)+46=2346

Step-by-step explanation:

thats what my calculator said sheeesh seeesh can I get brainliest sheesh sheeesh

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