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Serjik [45]
3 years ago
14

Help please

Mathematics
1 answer:
ValentinkaMS [17]3 years ago
5 0
Because none of the points on the number line are above 0, we know that the points will be negative.
This eliminates the second and third choices, as they contain positive numbers.
The first point, A, is a number less than -0.5 or -1/2
The first choice matches A with -5/16, which is less than -0.5 or -1/2
Therefore, the fourth choice must be the correct answer.
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A circle has a diameter of 20 mm what is it’s circumference? Use 3.14 for pi and do not round your answer
Dvinal [7]

Answer:

94.2

Step-by-step explanation:

circumference is d(pi)

20(3.14) = 94.2

8 0
3 years ago
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A box with no top is to be constructed from a piece of cardboard whose length measures 12 inches more than its width. The box is
MAXImum [283]

Answer:

Width is 12 inches and height is 4 inches.

Step-by-step explanation:

Let the width of the piece of cardboard be = w inches

Then length is = w+12 inches

As given, 4 inch squares are cut from each corner;

So, the width is = w-8 inches

Length is = w+12-8=w+4 inches

When we are folding the cut portion, that gives the height as = 4 inches

The volume is given by : length x width x height

And volume is given as 256 cubic inches

So, 256=(w+4)(w-8)(4)

=> 256=(w^{2}-4w-32)4

=> 64=(w^{2}-4w-32)

=> w^{2} -4w=96

or w^{2} -4w-96=0

=> w^{2} -12w+8w-96=0

=> w(w-12)+8(w-12)=0

We get , (w+8)=0 ; w = -8(neglect the negative value)

(w-12)=0 ; w = 12 inches

And length = 12+12=24 inches

Hence, dimensions are : L = 24 inches ; w = 12 inches and h = 4 inches

We can check by putting these values in equation : 256=(w+4)(w-8)(4)

256=(12+4)(12-8)(4)

=> 256=(16)(4)(4)

=> 256=256

5 0
3 years ago
If a is less than 10 and b is less than 5,it must be true that
Misha Larkins [42]
D. The greatest a can be is 9 and the greatest b can be is 4. a+b= 13 which is less than 20
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hoa [83]
The answer is A.<span>–11y – 3x</span>
5 0
4 years ago
Completely lost ! Need Help With This !
Anettt [7]
80/5=16 cookies need 1 cup of flour
144/16= 9 cups to make 144 cookies
8 0
3 years ago
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