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2 years ago

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. 2/100 × 150= 3. b. 100×400=40000. c. 6/100 ×60= 1.2 ×3=3.6. d. 69×50=3400 so answer c.

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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

$P=64\ in$

$64=2(x+y)$

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

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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:

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

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1 year ago

Section A

sesenic [268]

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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:

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Step-by-step explanation:

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

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r = 1.021-1

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2 years ago

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marin [14]

Answer:

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Step-by-step explanation:

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3 years ago

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​

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