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Maurinko [17]
2 years ago
11

19. which one of the following is not equal to the rest? a 2% of 150 b. % of 400 b 3 c. 6% of 60 d. 69 of 50​

Mathematics
1 answer:
Irina18 [472]2 years ago
5 0

Answer:

i think it's c

Step-by-step explanation:

a. <u>2</u><u>/</u><u>1</u><u>00</u><u> </u><u>×</u><u> </u><u>1</u><u>5</u><u>0</u><u>=</u><u> </u><u>3</u><u>. </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>b</u><u>. </u><u> </u><u>100×</u><u>4</u><u>0</u><u>0</u><u>=</u><u>4</u><u>0</u><u>0</u><u>0</u><u>0</u><u>. </u><u> </u><u> </u><u> </u><u> </u><u>c</u><u>. </u><u> </u><u> </u><u>6</u><u>/</u><u>100 </u><u>×</u><u>6</u><u>0</u><u>=</u><u> </u><u>1</u><u>.</u><u>2</u><u> </u><u>×</u><u>3</u><u>=</u><u>3</u><u>.</u><u>6</u><u>. </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>d</u><u>. </u><u>6</u><u>9</u><u>×</u><u>5</u><u>0</u><u>=</u><u>3</u><u>4</u><u>0</u><u>0</u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>so </u><u>answer</u><u> </u><u>c</u><u>. </u><u> </u><u> </u><u> </u><u> </u><u> </u>

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a flat rectangular piece of aluminum has a perimeter of 64 inches. the length is 10 inches longer than the width. find the width
I am Lyosha [343]

Answer:

The width of the piece is 11 inches

Step-by-step explanation:

Let

x ----> the length of the rectangular piece of aluminum in inches

y ----> the width of the rectangular piece of aluminum in inches

we know that

The perimeter of the rectangular piece of aluminum is equal to

P=2(x+y)

we have

P=64\ in

so

64=2(x+y)

simplify

32=x+y ----> equation A

x=y+10 ----> equation B

Solve the system by substitution

substitute equation B in equation A

32=y+10+y

solve for y

32=2y+10

2y=32-10

2y=22

y=11

therefore

The width of the piece is 11 inches

3 0
3 years ago
e. 2y(y + 3)this is not a quiz it is an assignment that is due tomorrow and I Wil be grateful for anyhelp
Elena-2011 [213]

We need to multiply

-2y(y+3)

We need to use the distributive property to expand this:

a(b+c)=ab+ac

Let's multiply it out using this property, to get our answer:

\begin{gathered} -2y(y+3) \\ =-2y(y)+(-2y)(3) \\ =-2y^2-6y \end{gathered}

6 0
1 year ago
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sesenic [268]
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8 0
3 years ago
Find the monthly growth rate as a percentage given this exponential function: f(t)=5,400(1.021)^t​
choli [55]

Answer:

The monthly growth rate is 2.1%

Step-by-step explanation:

To find the monthly growth rate, we have to consider what is inside the bracket

Mathematically, what we have in the bracket should be written as;

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Thus;

1 + r = 1.021

r = 1.021-1

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This is same as 2.1%

8 0
2 years ago
ocabulary What operations have inverse relationships? Select all that apply. A. Addition and subtraction B. Addition and multipl
marin [14]

Answer:

it can be a or d

Step-by-step explanation:

8 0
3 years ago
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