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3 years ago

-16t^2+1800 after falling for 4.8 seconds

Mathematics

1 answer:

STatiana [176]3 years ago

6 0

If t=time then the t will be subbed

-16x4.8^2+1800

(-368.64)+1800

1431.36

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Which polynomial is a perfect square trinomial?

Levart [38]

Answer:

$\large\boxed{16x^2-24x+9=(4x-3)^2}$

Step-by-step explanation:

$\text{Perfect square:}\ (a-b)^2=a^2-2ab+b^2\\=======================\\\\25x^2-20x-16\to\text{NOT. Because is}\ -16=-4^2\\\\9a^2-30a-25\to\text{NOT. Because is}\ -25=-5^2\\\\25b^2-15b+9=(5b)^2-2(5b)\left(\dfrac{3}{2}\right)+3^2\to\text{NOT. Because is}\ b=\dfrac{3}{2}\ \text{and}\ b^2=3^2\\\\16x^2-24x+9=(4x)^2-2(4x)(3)+3^2=(4x-3)^2\ \boxed{YES\ :)}$

8 0

3 years ago

2w+4w^2-5w^3

Shtirlitz [24]

Sorry, but this problem cannot be simplified.

It stays how it is.

3 0

3 years ago

Step by step to get answer

ELEN [110]

Use PEMDAS

Parentheses

Exponents

Multiplication (L-R)

Division (L-R)

Addition (L-R)

Subtraction (L-R)

(30-9+3)+9

(21+3)+9

24+9

33 is your answer

3 0

4 years ago

Simplify or solve for x in (X+9)/2=3

Tems11 [23]

Answer: -3, write the division as a fraction, multiply both sides by 2, move constants to the right, then you're left with x=6-9 which is -3

6 0

4 years ago

Read the attachments.

sladkih [1.3K]

Answer:

C. Step 3

Step-by-step explanation:

What he did was correct all the way up until he it 9. He forgot to add the negative sign in front of the 9. You are adding -4 and -5 together. You will get -9.

7 0

4 years ago