Find the exact value of x

Answer:

It is a perfect square expression.

It factors to (x+2)^2

===========================================================

Explanation:

The general format for a perfect square is

(a+b)^2 = a^2 + 2ab + b^2

Which can be seen through the use of the FOIL rule.

Compare x^2+4x+4 with a^2+2ab+b^2, and we have these three equivalences:

Since x^2 = a^2, we can apply the square root to both sides to get a = x. Similarly, 4 = b^2 leads to b = 2. We could get b = -2, but that would mean 2ab = 2x*(-2) = -4x instead of 4x. So we'll stick with b = 2 instead.

Because a = x and b = 2, we then can say:

(a+b)^2 = a^2 + 2ab + b^2

(x+2)^2 = x^2 + 2*x*2 + 2^2

(x+2)^2 = x^2 + 4x + 4

Showing that x^2+4x+4 factors to (x+2)^2.

26 letters in the alphabet.

1-20 = 20 numbers.

The probability of getting w = 1/26

The probability of getting 17 = 1/20

The probability of both: 1/26 x 1/20 = 1/520

Answer:

54

Step-by-step explanation:

deltamath gave me the answer

The length of w is 54 cm.

One of the six mathematical functions used to express the side ratios of right triangles, the trigonometric function includes the sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc). The figure shows these six trigonometric functions in respect to a right triangle. Surveying, engineering, and navigation issues where one of a right triangle's acute angles and the length of a side are known but the lengths of the other sides need to be determined can be solved with ease using trigonometry.

As per the given data:

x = 41 cm

v = 17 cm

∠W = 134°

To find the length of w:

From the cosine law:  [tex]cos(W) = \frac{x^2 + v^2 - w^2}{2xv}[/tex]

[tex]w = \sqrt{x^2 + v^2 - 2xvcos(W)}\\w = \sqrt{(41)^2 + (17)^2 - 2(41)(17)cos(W)}\\w = \sqrt{1681 + 289 + 968.35} = \sqrt{2938.35}\\w = 54 \:cm[/tex]

Hence, the length of w is 54 cm.

To learn more about Trigonometry, click:

brainly.com/question/29002217

#SPJ3

Answer:

The exact value of x will be [tex]\sqrt{52}[/tex] or 7.2111

Step-by-step explanation:

Hope this Helped

Answer:

im a girl

Step-by-step explanation:

Answer:

19/4

Step-by-step explanation:

the answer is 19/4.From the photo

Answer:

y = 4x - 2

Step-by-step explanation:

Given: 4x=2+y

First, subtract 2 on both sides to isolate out y. (Slope-intercept form is y=mx+b)

Once subtracted, you get: 4x-2=y

Rearrange it, and you get: y=4x-2

Answer:

Multiply across the parenthesis and combine like terms

Explanation:

(

x

−

2

)

×

(

3

x

−

4

)

=

x

×

(

3

x

−

4

)

−

2

(

3

x

−

4

)

x

×

(

3

x

−

4

)

−

2

(

3

x

−

4

)

=

3

x

2

−

4

x

−

6

x

+

8

3

x

2

−

4

x

−

6

x

+

8

=

3

x

2

−

10

x

+

8

Step-by-step explanation:

hope this helps

9514 1404 393

Answer:

  90°

Step-by-step explanation:

The largest angle is 6 of the 6+1+5 = 12 ratio units, so is 6/12 = 1/2 of the total number of degrees in a triangle.

The largest angle is 1/2(180°) = 90°.

Answer:

Here's the photo!

Step-by-step explanation:

Answer: Option B, C = 3.

Step-by-step explanation:

Here we have the function:

f(x) = A*cos(x - C)

A is the amplitude, and we can easily see that the amplitude is 2.

Then:

f(x) = 2*cos(x - C)

We also can see that when x = 0, f(x) ≈ -2

This means that:

cos(0 - C) ≈ -1

Cos(C) ≈ -1

Now we can just evaluate in the different options and see which one is the correct option.

Cos(1) = 0.54

Cos(2) = -0.42

Cos(3) = -0.99

Cos(4) = -0.65

The closer option to -1 is when C = 3, then the correct option is option B.

Answer:

B

Step-by-step explanation:

Just took the quiz

Answer:

Your change is $2.20

Step-by-step explanation:

4 x $1.50 = $6

2 x $.90 = $1.80

$6 + $1.80 = $7.80

$10 - $7.80 = $2.20

So it's $2.20. Have a nice day :D

Answer:

$2.20

Step-by-step explanation:

4 bags of cotton candy

$1.50 x 4 = $6.00

2 soft drinks

$0.90 x 2 = $1.80

$6.00 + $1.80 = $7.80

$10.00 - $7.80 = $2.20

Answer:

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

Step-by-step explanation:

edge 2021

Answer:

4. 2/3

Step-by-step explanation:

Plug the coordinates into the formula.

y2 - y1 / x2 - x1    

= 3 - (-1) / 4 - (-2)

= 2/3

Answer:

y = 8.49

Step-by-step explanation:

cos 45 = 6/y

0.7071 = 6/y

y = 8.49

Answer:

30 - 60 - 90

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

the situation is addition the answer is 16 i think

Answer: 11

Step-by-step explanation:

When you do square root, you're just finding the number that can be multiplied by itself to get what's inside the √ .

So, when you do √121 , you'll get 11. You can check your answer by going backwards: multiply 11 by itself.

P.S. I also want a Brainliest!!!!!

Answer:

-3=n

Step-by-step explanation:

21=-7n

divide both sides by -7

-3=n

Answer:

n=3

Step-by-step explanation:

21 ÷7=3

n=3

Answer:

F(x) ^-1= x+3/4

Step-by-step explanation:

Exchange f(x) for y

Y=4x-3

+3

Y+3=4x

/4

Y+3/4=x

Swap y and x

F(x)^-1= x+3/4

Answer:

Here is your answer

Hope it helps

Answer:

Lets say that m is months

Every month she deposits 30 so that is 30m

lets say t is time

t = 30m > 120

After 4 months, she will have exactly $120. In 5, she will have more.

Step-by-step explanation:

Answer: Each classmate got 9 pencils

Step-by-step explanation: if you divide 8 from 75, you get 9 pencils for each classmate and 3 for Jessica to keep.

Answer:

she can use 14.025 gigabytes

By "state the universe" I suppose you mean "domain". log₂(x ² + 3x + 2) is defined for

x ² + 3x + 2 = (x + 1) (x + 2) > 0   →   x < -2   or   x > -1

(To solve the inequality, consider values of x between the ones that make the expression exactly equal to 0, in this case x = -2 and x = -1. We have, for instance, for x = -3, that (-3)² + 3(-3) + 2 = 2 > 0, so x ² + 3x + 2 > 0 for all x < -2.)

Now solve the equation: Write both sides as powers of 2 to eliminate the logarithm on the left:

[tex]\log_2(x^2+3x+2)=1\implies 2^{\log_2(x^2+3x+2)}=2^1\implies x^2+3x+2=2[/tex]

Solve the remaining quadratic:

x ² + 3x + 2 = 2

x ² + 3x = 0

x (x + 3) = 0

x = 0   or   x = -3

Both of these solutions are within the presribed domain (-3 < -2 and 0 > -1), so we're done.

Answer:

With what?? umm I dont see anythinggg

Answer:

B) 7.2 cm / 22.61 cm

Step-by-step explanation:

6.28 / 2 = 3.14

3.14 x 7.2 = 22.608 = 22.61

Circumference = 7.2

Diameter = 22. 61

7.2 cm / 22.61 cm

Answer:

need points luvk

Step-by-step explanation: