When  x=3, the value of x^2-2 is?​

Answers

Answer 1

Answer:

7

Step-by-step explanation:

First you would square 3 which is nine. Then subrtact 2. The final answer is 7 .


Related Questions

PLS ASAPPPPPPPPPP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Slope is 4.

y=4x + 1

Take coordinates (0,1) & (1,5)

Rise/Run

5-1/1-0 = 4

Maths!! im a bit confused lol

Answers

Answer:

336

Step-by-step explanation:

12×1×4×7=336

not sure just a try

Find the area of the similar
figure.
18cm
15cm
Area = 50cm2
Area = [?]cm2
-

Answers

Answer:

270

Step-by-step explanation:

Which of the following triangles could lie on the graph with the same rise over run in Question # 3?
A. A triangle with a rise of 10 and a run of 30
B. A triangle with a rise of 30 and a run of 10
C. A triangle with a rise of 10 and a run of 40
D. A triangle with a rise of 2 and a run of 5

Answers

Answer:

B.

Step-by-step explanation:

B: A triangle with a rise of 30 and a run of 10

The equation 12x² + 4kx + 3 = 0 has real and equal roots, if

Answers

Answer:

[tex]k=\pm3[/tex]

Step-by-step explanation:

[...] if you can write the LHS as a perfect square, or if you can't spot a factorization of it right away, if and only if the discriminant [tex]\Delta = b^2-4ac[/tex] (or, if b is an even number, 1/4 of it) is zero.

I see it! I see it!

Stare at it for a while. First term is [tex]3(2x)^2[/tex], third term is [tex]3(1)^2[/tex], we are missing a double product, but we can play with k. For the LHS to be [tex]3(2x\pm1)^2 = 3(4x^2\pm4x+1) = 12x^2\pm12x+3[/tex] you just need [tex]4k= \pm12 \rightarrow k=\pm3[/tex].

I don't see it...

Then number crunching it is. Set the discriminant to 0, solve for k

[tex]\frac{\Delta}4 = 4k^2-12\cdot 3 =0 \rightarrow 4k^2=36 \\k^2 = 9 \rightarrow k=\pm3[/tex]

How to find the null and alternative hypothesis.

Answers

The actual check begins by considering 2 hypotheses. they're referred to as the null hypothesis and therefore the various hypothesis.

Solve the given equation

3x + 7 = 14 + 3x

Answers

Answer:

no solution.

Step-by-step explanation:

3x+7=14+3x

3x-3x=14-7

      0=7

0 is not equal to 7, hence making this equation to have no solution.

Answer: no solution

Step-by-step explanation:

Pls solve this question

Answers

C) (0,-3) as makes the inequality true

What does x equal in the equation 10= 0.0048(x - 50)^2 + 6?

Answers

Answer:

x=\frac{0.48+\sqrt{0.0768}}{0.0096},\:x=\frac{0.48-\sqrt{0.0768}}{0.0096}

Step-by-step explanation:

(x-50)^2 is x^2+2500-100x*.0048 is .0048x. 2500*0.0048 is 12, and -100*0.0048=-.48.

So, we have .0048x^2+12-.48x+6, which is

.0048x^2+18-.48x=10. USing the quadratic formula, we get

x=\frac{0.48+\sqrt{0.0768}}{0.0096},\:x=\frac{0.48-\sqrt{0.0768}}{0.0096}

(Enter into symbolab.com to see theanswer)

Find the volume of the figure. Round your final answer to the nearest hundredth if necessary.

Answers

Answer:

Look at the photo I have sent

If 3x + 2 > X + 8 then

Help please

Answers

Answer: x>3

Step-by-step explanation:

3x + 2 > X + 8

2x  > + 8 - 2

2x > 6

x > 3

How do I solve this?​

Answers

Answer:

x= -2

Step-by-step explanation:

y=x+4

y=2

2=x+4

-4+2=x

-2=x

x=-2

Answer:

x= -2

Step-by-step explanation:

Help me on this please

Answers

I don’t think that I can help you. But good luck on that. And I hope you have an amazing day!

¿Se pueden reducir términos semejantes en la expresión? y +3x +4y+x+3y+2x. ¿Por qué?

Answers

Answer:

8y + 6x

Step-by-step explanation:

Combine like terms

   y + 3x +4y + x + 3y + 2x

=  (y + 4y + 3y) + ( 3x + x + 2x)

=    8y + 6x

how mouch does it cost in total(include 13%tax) to reaseal the parking lot if each 19l pail of sealantt costs 19.29

Answers

Answer:

9.50

Step-by-step explanation:

needs to be 20 character

Actually the answer is 7560.Because 3 1/2 X 2x4 X 4, 4 1/2 X x5 X 1=7560

Answers

Answer:

k

Step-by-step explanation:

Why is math hard????

Answers

Answer:

It doesnt have to be, you are making it. It's really just addition multiplication divison and subtraction in different ways

Step-by-step explanation:

Answer:

BECAUES IT IS

Step-by-step explanation:

I don´t know

Mr. Chaplin measured his son’s rectangular bedrooms for new carpeting. Whose bedroom has the greatest area?


George’s bedroom 3.5 meters by 4.4 meters
Steven’s bedroom 3.8 meters by 3.8 meters
Andy’s bedroom 3.6 meters by 4.1 meters

Answers

Answer:

Step-by-step explanation: multiply each and then you choose which one is greater

which is George’s bedroom 15.4

The area of George's bedroom is the greatest with 15.4 sq meters.

What are the area and perimeter of a rectangle?

We know the perimeter of any 2D figure is the sum of the lengths of all the sides except the circle and the area of a rectangle is the product of its length and width.

We know the area of a rectangle is (length×width).

George’s bedroom 3.5 meters by 4.4 meters,

∴ The area of George's bedroom is (3.5×4.4) sq meters.

= 15.4 sq meters.

Steven’s bedroom 3.8 meters by 3.8 meters,

∴ The area of Steven's bedroom is (3.8×3.8) sq meters.

= 14.44 sq meters.

Andy’s bedroom 3.6 meters by 4.1 meters.

∴ The area of Andy's bedroom is (3.6×4.1) sq meters.

= 14.76 sq meters.

So, the area of George's bedroom is the greatest.

learn more about rectangles here :

https://brainly.com/question/15019502

#SPJ2

what is the answer??????​

Answers

Answer:

C. 6.66

Solution:

20/3 can be expressed as 20 ÷ 3

20 ÷ 3 = 6.66...

we would have a result of an endless quotient.


Mrs. Collado is buying a
refrigerator that sells for $590.
After a 10% discount is taken,
6% sales tax is added to the
price. A $50 delivery charge is
added on after the tax is computed. What will be the final cost of the refrigerator?

Answers

9514 1404 393

Answer:

  $612.86

Step-by-step explanation:

The discount multiplies the price by (1 -10%) = 0.90.

The tax multiplies the price by (1 +6%) = 1.06

Then the total price with delivery charge is ...

  $590×0.90×1.06 +50 = $612.86

Answer:

612.86

Step-by-step explanation:

10% is 59 590-59=531

562.86 after tax

612.86 after delivery charge

Choose which diagram shows the correct markings of the sides and angles of the following congruent triangles.

Answers

Answer:

D IS THE CORRECT ANSWERRR

Step-by-step explanation:

IN DIAGRAM D

G = Q

I = R

H = S

SO, THEY ARE SIMILAR

Which of the following lists is in order from smallest to largest?

Answers

The answer is

1.1%, 0.1, 1/9, 2/11

Step-by-step explanation:

convert the fractions to decimals, the percentage to decimal.

then just order the numbers from smallest to biggest

1/9= 0.11

2/11=0.18

1.1%/100= 0.011

Anyone helps me pleaseeeeee✨
I will so so so love you if you help me to solve it!!!!!!!!!

Answers

Answer: Hope it helps :)

Step-by-step explanation:

The essential thing to learn from this lesson is the translation of equations.  When f(x) = f'(x) + a, the graph of the equation is shifted up by a units.

When f(x) = f'(x + a), the graph of the equation is shifted left by a units.

Find the perimeter. Simplify the answer.

Answers

Answer:

21u-26

Remember to add like terms

Transform y = cot(x) to get the graph of. Which type of transformation is not performed? vertical shift horizontal shift vertical stretch horizontal stretch.

Answers

Transformation involves changing the form of the function

The transformation that is not performed is (a) vertical shift

The function is given as:

[tex]\mathbf{y = cot(x)}[/tex]

From the complete question, the transformed function is:

[tex]\mathbf{y=3cot[\frac 15(x+2)]}[/tex]

On y = cot(x); start by translating the function 2 units left.

The rule of this transformation is:

[tex]\mathbf{(x,y) \to (x +2,y)}[/tex]

So, we have:

[tex]\mathbf{y = cot(x + 2)}[/tex]

Next, stretch the function horizontally by a factor of 1/5

The rule of this transformation is:

[tex]\mathbf{(x,y) \to (\frac 15x,y)}[/tex]

So, we have:

[tex]\mathbf{y=cot[\frac 15(x+2)]}[/tex]

Lastly, stretch the function vertically by a factor of 3

The rule of this transformation is:

[tex]\mathbf{(x,y) \to (x,3y)}[/tex]

So, we have:

[tex]\mathbf{y=3cot[\frac 15(x+2)]}[/tex]

From the above transformations, we have:

Horizontal shift Vertical stretch Horizontal stretch

Hence, the transformation that is not performed is (a) vertical shift

Read more about transformations at:

https://brainly.com/question/13801312

Answer:

vertical shift

Step-by-step explanation:

edge

what is the value of 5 x 10/6

Answers

Answer:

25/3

Step-by-step explanation:

5 x 10/6

=> 5 x 5/3

=> 25/3

Therefore, the value is 25/3.

Hoped this helped.

Answer:

25/3 is the value of 5 x 10/6

Step-by-step explanation:

5 x 10/6

5 x 5/3

= 25/3

Use the table to calculate the slope and y-intercept, then write the equation in slope intercept form.

Answers

Answer: y = (28/4)x + 4

Step-by-step explanation:

We'll be using 20, 144 (1) and 24, 172 (2) for this

slope = y2 - y1 / x2 - x1

slope = 172 - 144 / 24 - 20

slope = 28/4

y = mx + b

y = (28/4)x + b

We can then reduce 20, 144 by 4, 28

20, 144

16, 116

12, 88

8, 60

4, 32

0, 4

The y-intercept is when x = 0, so its 4.

Plug that into y = mx + b

y = (28/4)x + 4

Tim earns spending money by doing odd jobs for his neighbors. The table shows how much he is paid
for each job. Tim gets $12 for mowing lawn, $9 for washing cars, and $7 for walking dogs. Tim owes his mother $23. What possible combination of jobs could Tim perform to earn
enough money to pay back his mother? Write an addition equation using integers to represent the
situation. Will he have money left over? Select the correct choice below and fill in the answer boxes to complete your choice.

Answers

Answer:

D

Step-by-step explanation:

D is the only option where Tim has 23 or more dollars earned.

To show this I will solve each equation...

A) (-23)+9+9 = (-23)+18= -5

-5 < 0 so A doesn't work

B) (-23)+7+7+7 = (-23)+21= -2

-2 < 0 so B doesn't work

C) (-23)+12+9 = (-23)+21= -2

-2 < 0 so B doesn't work

D) (-23)+12+12 = (-23)+24= 1

1 > 0 so D does work!

* I am using 0 to compare each number with the result because Tim should have 0 or more dollars after paying his mom.

Hope this Helps!

CAN SOMEONE HELP ME PLEASE ASAP!

Answers

The width is 21 centimeters.

Answer:

the answer is 21 cm

Step-by-step explanation:

as doing by formulae

A man's age is three times his son's age. Ten years ago, he was five times his son's
age. By forming two equations and solving them simultaneously, find both of their ages.

Answers

Answer:

Step-by-step explanation:

son age be x

Aman age is 3x

ten years ago

son age x-10

aman age 3x -10

A.T.Q

5(x-10) = 3x -10

5x -50 = 3x - 10

2x = 40

x =20

3x=60

son present age =20

aman present age = 60

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