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never [62]
2 years ago
4

the length of a living room is 12 feet and its width is 10 1/2 feet. The length of the room is being expanded by x feet. Select

all the expressions that represent the area of the living room in square feet.
Mathematics
1 answer:
Y_Kistochka [10]2 years ago
5 0

Answer:

(12+x)(10 1/2+x)

Step-by-step explanation:

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A grasshopper jumps off a tree stump. The height, in feet, of the grasshopper above the ground after t seconds is modeled by the
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The height, in feet, of the grasshopper above the ground after t seconds is modeled by the function , which is

h(t) =-t^2+\frac{4}{3}t+ \frac{1}{4}

When the grasshopper land on the ground,

h(t)=0

that is,

-t^2+\frac{4}{3}t+ \frac{1}{4}=0

Multiplying whole equation by 12 to get rid of denominators 3 and 4

-12t^2+16t +3=0

(3-2t)(6t+1)=0 \\ 3-2t=0 , 6t+1=0 \\ t= \frac{3}{2} , \frac{-1}{6}

And time cant be negative, so the correct option is

t = \frac{3}{2}=1.5 seconds

Correct option is C .

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2 years ago
Jenna’s method: Mia’s method: 5(30 + 4) 5(30 + 4) (5)(30) + (5)(4) 5(34) = 170 150 + 20 = 170 Explain why both Jenna and Mia arr
seraphim [82]

Answer:

Both people did the same type of general question, but Jenna's method uses the distributive property to do it mentally.

Step-by-step explanation:

Jenna's Method: Uses distributive property to break it all down and do it mentally.

Mia's Method: She broke the equation down so much that the answer will be more complex to find.

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2 years ago
. Steve drove for 812 hours at 72 miles per hour. How much distance did he travel?
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Answer:

58464

Step-by-step explanation:

Multiply the two numbers

4 0
2 years ago
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Matty’s piano book includes 15 songs in the key of C, 10 in the key of G, and 5 in the key of F. The songs from all three keys a
Marta_Voda [28]

Matty's piano is going to a random key of c next.

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a student concluded that the solution to the equation sqrt 2x+1+3=0 is x=4 Do you agree? Explain why or why not.
Lina20 [59]

Answer:

  No.

Step-by-step explanation:

We assume you're concerned with

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The sum of a non-negative number and a positive number cannot be zero. The square root is always non-negative.


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2 years ago
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