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guajiro [1.7K]
3 years ago
5

Factor. 4x^2 - 7x - 2 ​

Mathematics
1 answer:
zimovet [89]3 years ago
5 0

Answer:

(4x+1) (x+2)

Step-by-step explanation:

............................

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Hiro bought a small carton of milk at lunch. If the approximate dimensions of the milk carton are shown what is the minimum amou
faltersainse [42]

Answer:

C.\ 104\ in^2

Step-by-step explanation:

At first, the question looks like an optimization problem, but since all the dimensions of the carton are given, we only have to compute the total area of the given figure.

Let's calculate the front (and back) areas, which are rectangles

A_1=(6.5)(3)=19.5\ in^2

Now with the lateral rectangles which happen to have the very same dimensions

A_2=19.5\ in^2

Next, we compute the front and back triangles of base 3 in and height 1.5 in

A_3=\frac{1}{2}(3)(1.5)=2.25\ in^2

Now, the lateral inclined rectangles of base 3 in and height 2 in

A_4=(3)(2)=6\ in^2

Finally, the base rectangle who happens to be a square of side 3 in

A_5=(3)(3)= 9\ in^2

This last area, unlike all others, is not doubled because its counterpart is inside the carton and is not part of the lateral area

Our total area of cardboard is

A_t=2(19.5)+2(19.5)+2(2.25)+2(6)+9=103.5\ in^2

The closest option to this answer is

C.\ 104\ in^2

5 0
3 years ago
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(8.4 - 4.5) × (7.04 - 0.04) =
iren [92.7K]
(8.4−4.5)(7.04−0.04)

=3.9(7.04−0.04)

=(3.9)(7)

=27.3

Ans : 27.3
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3 years ago
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Which graph represents the function f(x))=2•(1/3)^x
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Answer:

The one in the right top hand corner. It shows one arrow pointing up and one to the right.

Step-by-step explanation:

I can't really explain it.

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2 years ago
What is a rational number? A.9 B.15 C.28 D.25
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The answer is..........
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3 years ago
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your dad is designing a new garden for your backyard. he has 21 ft of fencing to go around the garden. he wants the length of th
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Answer:

The garden is 4.5 ft by 6 ft.

Step-by-step explanation:

2x + 2(x+1.5) = 21

2x + 2x + 3 = 21

4x = 18

x = 4.5

4 0
2 years ago
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