Find the value of x. PLEASE HELP - test tomorrow
The answer is 15.

I need to show my work.

THANK YOU!!!!!

Answer:

it is an acute angle

Step-by-step explanation:

less then 90° is a acute and above 90° angle is an obtuse

Answer:

3/4(2x+1)=2

3/2x+3/4=2

3/2x=2 -3/4

3/2x=-10/4

3/2x(2)=-10/4(2)

3x= -5/2

3x/3 = -5/2 * 1/3

x= -5/6

Answer:

I'm pretty sure that this one is the correct factorization of the polynomial above: c) (3x+4)(9x^2-12x+16)

(3x−4)⋅(9x  

2

+12x+16)

See steps

Step by Step Solution:

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STEP

1

:

Equation at the end of step 1

 33x3 -  64

STEP

2

:

Trying to factor as a Difference of Cubes

2.1      Factoring:  27x3-64  

Theory : A difference of two perfect cubes,  a3 - b3 can be factored into

             (a-b) • (a2 +ab +b2)

Proof :  (a-b)•(a2+ab+b2) =

           a3+a2b+ab2-ba2-b2a-b3 =

           a3+(a2b-ba2)+(ab2-b2a)-b3 =

           a3+0+0+b3 =

           a3+b3

Check :  27  is the cube of  3  

Check :  64  is the cube of   4  

Check :  x3 is the cube of   x1

Factorization is :

            (3x - 4)  •  (9x2 + 12x + 16)  

Trying to factor by splitting the middle term

2.2     Factoring  9x2 + 12x + 16  

The first term is,  9x2  its coefficient is  9 .

The middle term is,  +12x  its coefficient is  12 .

The last term, "the constant", is  +16  

Step-1 : Multiply the coefficient of the first term by the constant   9 • 16 = 144  

Step-2 : Find two factors of  144  whose sum equals the coefficient of the middle term, which is   12 .

     -144    +    -1    =    -145  

     -72    +    -2    =    -74  

     -48    +    -3    =    -51  

     -36    +    -4    =    -40  

     -24    +    -6    =    -30  

     -18    +    -8    =    -26  

For tidiness, printing of 24 lines which failed to find two such factors, was suppressed

Observation : No two such factors can be found !!

Conclusion : Trinomial can not be factored

Final result :

 (3x - 4) • (9x2 + 12x + 16)

Answer:

C

Step-by-step explanation:

When factorising the sum of cubes, we use the formula

a^3+b^3=(a+b)(a^2−ab+b^2).

In this case of 27x3+64,

27x^3=a^3

64=b^3

Find a:

27x^3=a^3

3^√27x^3=3^√a^3

3x=a

Find b:

64=b^3

3^√64=3√b^3

4=b

Substitute a=3x and b=4 into

 (a+b)(a^2−ab+b^2)

(3x+4)((3x)^2−(3x×4)+4^2)

= (3x+4)(9x^2−12x+16)

(3x+4)(9x^2−12x+16) is the factorised form of 27x^3+64

Answer:

y= -x+7, b= sqrt(2P/a), c=3P^2-b

Step-by-step explanation:

First, make a table regarding both of the equations. You will eventually find out that both lines intersect at the point (2, 5) after you find the points on the table. From there, subtract x from both sides in the equation x + y = 2. You will      get y = -x + 2. Since they said the line was parallel, find a line that has the slope of negative one. Since we know that this line intersects the point in which the first two lines intersect, we know that the y-intercept will be 7. The equation of the line would be y=-x+7.

Multiply both sides by 2. Then, divide both sides by a to get b^2=(2P/a). Take the square root to get the value of b, which is sqrt(2P/a).

Square both sides of the equation to get P^2=(b+c)/3. Cross multiply to get 3P^2=b+c. Subtract b from both sides to get c=3P^2-b.

Answer:

[tex]2\sqrt{21}[/tex]

Step-by-step explanation:

84/4=21

Square root of 4=2

[tex]2\sqrt{21}[/tex]

Answer:

D

Step-by-step explanation:

it is D because you always want x to be a lone fraction and that would be the first step im 99% sure unless someone can correct me :)

Answer:

d) subtract 15 from both sides

Step-by-step explanation:

Process of elimination:

a) 2.5 and x are being multiplied, not subtracted, so (a) is wrong right off the bat.

b) you may divide 2.5 by both sides, but you want to get "x" on one side first. So you would do (b) first either.

c) to get rid of 15, which we need to somehow, we need to do the opposite operation than the one in the equation. 15 is +15, not negative, and so you would need to subtract to get rid of 15. This is why (c) is also wrong.

That leaves us, with (d), because you need to subtract 15 to isolate "x".

Answer: 9

Step-by-step explanation:

Answer:

7.71$

Step-by-step explanation:

12 pounds = 92.52$

price/12 pounds {divided by} 12 = price/pound

92.52$ {divided by} 12 = 7.71$

Answer: 7.71

Step-by-step explanation:

Answer: Part A -

12= b+g

Part B-

a finite number of solutions

the number of boys or girls must be a natural number

Part C- (7,4, 4,6)

Step-by-step explanation:

Answer:

200 hits

Step-by-step explanation:

step1 : £5-1000

           £1-?

step2: 1000 /5

=200

For a polynomial of the form

ax2+bx+c

, rewrite the middle term as a sum of two terms whose product is a⋅c=3⋅3=9 and whose sum is

b=10.

3x2+x+9x+3

Factor out the greatest common factor from each group.

x(3x+1)+3(3x+1)

Factor the polynomial by factoring out the greatest common factor,

3x+1.(3x+1)(x+3)

Your answer is A.

when you leave the Nintendo switch will have 96% and the phone will have 84%,he should ask his parents for about 20 more minutes.

Answer:

when they leave, the phone would be charged 80% and the nintendo 36%. They would need to delay the road trip for 76.8 more minutes for the nintendo to fully charge and 50 minutes for the phone to fully charge

Step-by-step explanation:

Answer: -x^2 +4x -2

Step-by-step explanation:

5x+2(3x-1)

Use that

x(x+7)

minus the use that equation by this one and get the answer

Answer:

When a negative base is raised to the power of an even number, the answer is always​ positive.

Step-by-step explanation:

Answer:

1-(0, 4)

2-(-4, 3)

3-(2, 0)

4-(0, -1)

Step-by-step explanation:

hope this helps :3

if it did pls mark brainliest

Answer:

x= 0.5

Step-by-step explanation:

It makes sense

The value of x is 1/2.

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

–3x + 1 + 10x = x + 4

Now, solving for x

-3x+ 10x - x = 4 - 1

7x - x = 3

6x = 3

x= 3/6

x= 1/2

Hence, the value of x is 1/2.

Learn more about Equation here:

https://brainly.com/question/29657983

#SPJ2

Answer:

80,000

Step-by-step explanation:

Hope I helped. please mark brainiest.

Answer: 80,000

Step-by-step explanation: I did math give me brainliest pls

Answer with step-by-step explanation:

When you are reflecting a point, you are reversing its' axes. In this case, the reflection of (-6,-3) is (6,3).

Hope this was helpful!

Answer:

A::True

Step-by-step explanation:

For the quadratic function the domain is all real numbers since the horizontal extent of the graph is the whole real number line. Because the graph does not include any negative values for the range, the range is only non-negative real numbers.

Answer:

C

Step-by-step explanation:

Morgages is spelled mortgages

Answer:

B. At most 4 times

Step-by-step explanation:

Plz mark me brainlest! Hope this helps you!

Answer:

At least 4 times

Step-by-step explanation:

3t + 10 >= 22

   -10        -10

3t >= 12

/3     /3

t >= 4

Answer:5.4

Step-by-step explanation:

Answer:

- 40p + 13

Step-by-step explanation:

Given

3 - 10(4p - 1) ← distribute the parenthesis by - 10

= 3 - 40p + 10 ← collect like terms

= - 40p + 13

Answer:

not enough info

Step-by-step explanation:

Answer:

40

Step-by-step explanation:

400÷10=40

It says my answer needs to be 20 characters long so I'm writing this.

Answer:

it looks like it is Addition Property Of Equality

Step-by-step explanation:

Answer:

A. No solutions

Step-by-step explanation:

2x-2x=-9

0= -9

Since 0 does not equal -9, there are no solutions.