Please help me? Solve for x

Answer:

B :step 2   she didnt collect all the like terms and calculate

Step-by-step explanation:

first rewrite  remove all (  )Parentheses

2nd   collect all like terms and calculate

a^4 + 7a -16 -12^a^3 + 5a -3

a^4 + 12a - 19 - 12a^3     ( Like terms are 7a +5a  and -16 +-3)

so she skipped the second step

Answer:

2+5 = 7 is the related addition sentence that shows the commutative property of addition because it has fsdagsfdfgsfsdgfadbadfgathe same result of addition as 5+2=7.

Commutative property of addition says that if we have two numbers we have interchange them and this doesnot affect the result....

Step-by-step explanation:

Answer:

213.28 in^2

Step-by-step explanation:

surface area = 2(LW + LH + WH)

surface area = 2[(4.4 in)(5.6 in) + (4.4 in)(8.2 in) + (5.6 in)(8.2 in)]

surface area = 213.28 in^2

Answer:

Step-by-step explanation:

25x^2-64=0

x=8/5, -8/5

Answer: x = 8/5, -8/5

Step-by-step explanation:

25x^2 -64 = 0

(5x+8)(5x-8) = 0

x = 8/5, -8/5

Answer:

A

Step-by-step explanation:

-4 +5 is 1 not -1 lol

The incorrect step where Kelcy did mistake is given by: Option A: She added ⟨–4, 3⟩ and ⟨5, 1⟩ incorrectly.

Suppose that two vectors are given as:

[tex]x = \: < a,b > \\y= \: < c,d >[/tex]

Then, their addition is given as:

[tex]x + y = \: < a +c , b + d >[/tex]

For this case, we can see that when Kelcy added <-4,3 > and <5,1>, she didn't add -4 and 5 correctly, as it results in +1, and not -1,

Thus, <-4,3> + <5,1> = <1,4>

Thus, wrong addition caused error in the solution.

Thus, the incorrect step where Kelcy did mistake is given by: Option A: She added ⟨–4, 3⟩ and ⟨5, 1⟩ incorrectly.

Learn more about addition of vectors here:

https://brainly.com/question/4553385

Answer:

the answer is letter A.

Step-by-step explanation:

m=y²-y¹/x²-x¹

m=(-6)-16/(-19)-15

m=-22/-34

m=11/17

Answer:

performed or occurring as a result of a sudden inner impulse or inclination and without premeditation or external stimulus.

Basically, you do things spur of the moment.

Step-by-step explanation:

Answer: The definition of spontaneous is unplanned or done on impulse. An example of spontaneous is waking up and deciding to take a trip across the country that day. adjective.

Hope this helps... stay safe and have a great day!!! :D

Answer:

x=

2

5

​

=2.500

Step-by-step explanation:

Answer:

Step-by-step explanation:

54-16=38

38 divided by 1/2 is 19

so your answer is 19

hope that helps

Answer: 1/3=n

Step-by-step explanation:

-1/2(2n + 4) + 6 = –9 + 4(2n + 1)

Distribute:

-1n-2+6=-9+8n+4

Combine like terms:

-1n-2+6=-9+8n+4

-1n+4=-5+8n

Add 1n on both sides:

-1n+4=-5+8n

-1n+1n+4=-5+8n+1n

4=-5+9n

Add 5 on both sides:

4+5=-5+5+9n

9=9n

Divide 9 on both sides:

9/9=9n/9

1=n

Answer:

Angle T = Angle Q

Step-by-step explanation:

Logical

Answer:

17.5

Step-by-step explanation:

175% is written as 175/100. If you move the decimal at the end over twice you get 1.75/1 which is just 1.75. You then multiple 10 by 1.75 and you get 17.5

175% of 10 is

[tex]➞\large \: \frac{175}{100} \times 10[/tex]

[tex]➞\large \: \frac{175}{10} [/tex]

[tex]➞\: 17.5[/tex]

mrk brainleist ☺️

Answer:

1948 apples

Step-by-step explanation:

add.

1948 Hope it helped. And yea you can make a new account though you have to use a different email, Cuz I got banned once and this is my second account

Have a good day! <3

Answer:

It will be t>=7

Step-by-step explanation:

Answer:

The Answer is 2:3 because you break 6 and 9 in half.

Step-by-step explanation

It is 6 hits and 9 innings. Well 6:9. Is that one of your answers. No so you have to simplify it.  

Given:

The product [tex](2x + 3)(x + k)[/tex] is [tex]2x^2+13x+15[/tex].

To find:

The value of k.

Solution:

According to the question,

[tex](2x + 3)(x + k)=2x^2+13x+15[/tex]

Using distributive property, we get

[tex]2x^2+2xk+3x+3k=2x^2+13x+15[/tex]

[tex]2x^2+(2k+3)x+3k=2x^2+13x+15[/tex]

On comparing both sides, we get

[tex]3k=15\text{ and }2k+3=13[/tex]

[tex]k=\dfrac{15}{3}\text{ and }2k=13-3[/tex]

[tex]k=5\text{ and }2k=10[/tex]

[tex]k=5\text{ and }k=5[/tex]

Both value of k are same, i.e., 5.

Therefore, the value of k is 5.

Answer: He made $612 for sold 204 erasers this week.

Step-by-step explanation:

Answer:

$600

Step-by-step explanation:

Answer:

Each pen costs $3.60 (Each calculator costs $14.20).

Step-by-step explanation:

Let c represent calculator

Let p represent pen

3c + 7p = 67.8

6c + 2p = 92.4

Step 1: Solve 3c + 7p = 67.8 for c:

3c + 7p = 67.8

3c + 7p + −7p = 67.8 + −7p (Add -7p to both sides)

3c = −7p + 67.8

3c/3 = −7p + 67.8/3 (Divide both sides by 3)

c = −7/3p + 22.6

Step 2: Substitute −7/3p + 22.6 for c in 6c + 2p = 92.4:

6c+2p=92.4

6(−7/3p + 22.6) + 2p = 92.4

−12p + 135.6 = 92.4 (Simplify both sides of the equation)

−12p + 135.6 + −135.6 = 92.4 + −135.6 (Add -135.6 to both sides)

−12p = −43.2

−12p/−12 = −43.2/−12 (Divide both sides by -12)

p = 3.6

Step 3: Substitute 3.6 for p in c = −7/3p + 22.6:

c = −7/3p + 22.6

c= −7/3(3.6) + 22.6

c = 14.2 (Simplify both sides of the equation)

Answer:

c = 14.2 and p = 3.6

Hope this helps and have a great day :)

And please mark me brainliest if you can :)

Answer:

if you also now what this person is talking about it is b

Step-by-step explanation:

30 miles is 1 hour

60 miles is 2 hours

and so forward

X= 4

Step-by-step explanation:

:)

Answer: 1

Step-by-step explanation:

Answer:

1.  Chicago, Detroit, Kansas City. Because they’re larger cities where pop culture thrives.

2. Hot Jazz. Hot Jazz is heavily dependant on improvisation. The key element of hot jazz was artists coming up with music on the spot and fast paced as well.

3. The roaring 20s had a huge impact on jazz. The roaring 20s was one of the first major revolutions in pop culture where people were turning away from traditional things and turning to new ideas, music, clothing, etc. This caused jazz to boom because it was a brand new style that was less constricted by society than music created prior to it.

4.  A faster paced, more aggressive style of jazz.

5. A style of jazz that included many rock music characteristics.

6. Jazz, although less popular, can be found in lots of pieces today. It is either more modernized in new music, or is still the same as it was.

7. I like hot jazz the best because of the musical improvisation. I find it shows true talent the best in jazz musicians.

*The last questions not mentioned in the original question:

What are some ways that modern technology is used in music today that is different than music from when jazz originated? How do you think emerging technology will affect music in the future? - Music isn’t as real anymore. Most of today’s music in pop culture is produced by a computer rather than played live. Technology will, although continue to revolutionize music in the future, take away the element of true talent of music being played live like older jazz musicians once did.

According to Stefon Harris, what counts as a “mistake” in jazz? - Not incorporating or choosing to neglect other bandmate’s ideas when creating music.

Step-by-step explanation:

You're welcome lovelies get that A for me

Answer:

a

Step-by-step explanation:

a is the right answer and x would be 15

Answer:

It's A.

Step-by-step explanation:

It's verified as the correct answer for me.

Answer:

C. $25

Step-by-step explanation:

#dg#nutiy

Answer:

The answer is 25.

Step-by-step explanation:

I did it on Edge.. and got it right

Answer:

55%

Step-by-step explanation:

Answer:

5/9

12

Step-by-step explanation:

La clase entera es 1.

1/3 estudian español.

1/9 estudian italiano.

1 - 1/3 - 1/9 estudian alemán.

1 - 1/3 - 1/9 = 9/9 - 3/9 - 1/9 = 5/9

5/9 de los estudiantes estudian alemán.

n = numero total de estudiantes en la clase.

5/9 n = 15

9/5 * 5/9 * n = 15 * 9/5

n = 27

Hay 27 estudiantes en la clase.

27 - 15 = 12

12 estudiantes no estudian alemán.

Answer:

6.75

Step-by-step explanation:

A of rectangle = 2*1.5=3

A or triangle= (7-2)*1.5/2 = 5*1.5/2 =3.75

Area trapezoid =A rectangle +Atriangle = 3+3.75=6.75

Answer:

C : 6.75 yd.

Step-by-step explanation:

first, you divide the trapezoid into two shapes, a square, and a triangle. For the square's area, you multiply 2yd and 1,5 yd to get 3 yd. Then for the triangle's area, since the bottom side of the trapezoid is a side for both the triangle and the square, the square already took 2yd if that makes sense. You multiply 5yd and 1.5 yd to get 7.5 yd. Since its a triangle, you divide the area of the triangle by 2, which is 3.75 yd. To get the total area of the trapezoid, you then add 3yd plus 3.75 yd to get 6.75 yd. ²

hope this helps

Answer:

x

Step-by-step explanation:

14*6=84

84x/84=x