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ohaa [14]
3 years ago
8

Which expression is equivalent to the given expression?

Mathematics
2 answers:
antiseptic1488 [7]3 years ago
8 0

Answer:

O C.   -4x^2+5x-28

Step-by-step explanation:

3x^2+5x -7(x^2+4)      Distribute

3x^{2} +5x -7x^2-28       Multiply - 7 by 4

3x^2 +5x -7x^2 -28   Combine Like Terms

-4x^2 +5x-28           Final Answer

I am Lyosha [343]3 years ago
6 0

Answer:

C. - 4x^2 + 5x - 4

Step-by-step explanation:

just expand the equation and you'll get C

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Complete the following: (2x +3y)^2 = (2x)^2+2(2x)(3y) +(____)^2
FrozenT [24]

Answer:

Complete function will be  (2x+3y)^2=(2x)^2+(3y)^2+2\times (2x)\times (3y)

Step-by-step explanation:

We have given equation (2x+3y)^2=(2x)^2+2\times (2x)\times (3y)+..........^2

We have to find the function in place of blank space and complete the function

We know the algebraic equation (a+b)^2=a^2+b^2+2ab

So (2x+3y)^2=(2x)^2+(3y)^2+2\times (2x)\times (3y)

So in place of blank pace there will be (3y)^2

And complete function will be  (2x+3y)^2=(2x)^2+(3y)^2+2\times (2x)\times (3y)

3 0
3 years ago
An object is thrown upward from the top of a 192 ft building with an initial velocity of 64 feet
Airida [17]

Answer:

t=6

Step-by-step explanation:

ground height = 0

(are you sure your formula is correct? isn't it - 16t²?)

if h=16t² +64t+192 is true then

16t² +64t+192 = 0

t² + 4t + 12 = 0

t = (-4 ± √(4² - 4*12)) / 2*1 = (-4 ± √-32) / 2 = -2 ± 2√-2

There is no solution of t

if it is h= - 16t² +64t+192

0 =- 16t² + 64t + 192

t² - 4t - 12 = 0

(t + 2) (t -6) = 0

t should be positive

t = 6 sec

7 0
3 years ago
Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
Makovka662 [10]
The answer is 26.19. It’s 100% right.
4 0
3 years ago
At the beginning of the month, Sheryl had a balance of $120 in her checking account. She then made a purchase for $80, using her
Rama09 [41]
$80

add what you took out
3 0
2 years ago
Thx u if u get the answer
trapecia [35]
So the man's age is divisible by 3, 5, and 7 but not by 2, 4, 6, or 8.

3 * 5 * 7 = 105
105 is not divisible by 2, 4, 6, or 8.
Not sure if any lower ages are there, but since the man is 105 years old, you would receive $105.
5 0
3 years ago
Read 2 more answers
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