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evablogger [386]
3 years ago
13

Rewrite without parentheses and simplify. (y+7)^2

Mathematics
2 answers:
Soloha48 [4]3 years ago
5 0
(y + 7)^2 = (y + 7)(y + 7)

Multiply all the terms in the first parenthesis to all the terms in the 2nd parenthesis:

y * y = y^2
y * 7 = 7y
7 * y = 7y
7 * 7 = 49

So we have:

y^2 + 7y + 7y + 49

Combine like terms:

y^2 + 14y + 49
OverLord2011 [107]3 years ago
3 0
The answer is <span>y^2 + 14y + 49 hope this helps</span>
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If A, B, and Care 2x2 matrices; and det(A) = -2, det(B) = -3, and det(C)=-4 then compute: det(4C^TA^-1 C^TB^3) = 0 Official Time
almond37 [142]

Answer with explanation:

|A| = -2

|B|= -3

|C| = -4

|4 C^TA^{-1}C^TB^{3}|=4 |C||A|^{-1}|C||B|^3, \text{as}|C^T|=|C|,|A^n|=A^n\\\\=4 \times (-4) \times (-2)^{-1} \times (-4) \times (-3)^3\\\\=4 \times (-4) \times \frac{-1}{2} \times (-4) \times (-27)\\\\=-1728 \times \frac{-1}{2} \\\\=864

3 0
3 years ago
1). Evaluate C(20,18).
SashulF [63]

The answers you are looking for are:

#1 = B) 190

#2=B) 1

7 0
3 years ago
Read 2 more answers
Simplify the following expression: 3(2w-4y+3)+6w-6
romanna [79]

Hello There! The answer is 12w - 12y + 3.

Here's a step by step on how to solve  3(2w-4y+3)+6w-6.

Step 1: Multiply the 3 by the numbers in the parenthesis.

3(2w-4y+3)+6w-6 ⇒ 6w - 12y + 9 + 6w - 6

Step 2: Rearrange the numbers so like terms are next to each other.

6w - 12y + 9 + 6w - 6 ⇒ 6w + 6w - 12y - 6 + 9.

Step 3: Combine like terms. (6w + 6w and - 6 + 9).

6w + 6w - 12y - 6 + 9 ⇒ 12w - 12y + 3

This is your final answer since you cannot simplify any further. I hope this helps and have a great day!

4 0
3 years ago
Read 2 more answers
The half-life of a certain radioactive element is 35 hours. If there are 904 grams of this element, how much will be left after
Artist 52 [7]

Answer:

226 grams

Step-by-step explanation:

This will be an exponential function. The formula for exponential functions and half life is A=Ao * (1/2)^(t/h)

A stands for final amount, Ao for initial amount, 1/2 is the decaying factor (after a half life, one mg becomes 1/2 mg), t stands for time, and h is the half life.

To solve your problem, the equation would be A=904 * (1/2)^(70/35)

The parentheses are necessary for your calculator or else you will get the wrong answer.

7 0
4 years ago
HELP PICTURE IS SHOWN
AleksandrR [38]
A. Work. 16/cos(40)= 20.886
4 0
3 years ago
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