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cestrela7 [59]
3 years ago
9

A broken scale shows a false weight that is always less than the actual weight by the same number of ounces. When a box is put o

n the scale it shows 15 ounces. When a bag is put on the scale, it shows 12 ounces. When the box and the bag are put on the scale together, it shows 31 ounces What is the actual weight of the box?
Mathematics
1 answer:
Lesechka [4]3 years ago
5 0

Answer:

19 ounces

Step-by-step explanation

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What number between 35 and 40 has only one and itself as factors?
Sonbull [250]

Answer:

37

Step-by-step explanation:

You're looking for a prime number.

6 0
3 years ago
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Evaluate 9(4x – 15) if x = 3.
4vir4ik [10]

Answer:

-27

Step-by-step explanation:

9(4x – 15)

Substitute 3 for x

9((4)(3) - 15)

Multiply (4)(3) = 12

9 ( 12 - 15 )

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9(-3)

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3 years ago
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Find the volume of the solid formed by rotating the region bounded by the given curves about the indicated axis. Y = 1x, y = 1,
Goryan [66]

The disk method will only involve a single integral. I've attached a sketch of the bounded region (in red) and one such disk made by revolving it around the y-axis.

Such a disk has radius x = 1/y and height/thickness ∆y, so that the volume of one such disk is

π (radius) (height) = π (1/y)² ∆y = π/y² ∆y

and the volume of a stack of n such disks is

\displaystyle V_n = \sum_{i=1}^n \pi {y_i}^2 \Delta y

where y_i is a point sampled from the interval [1, 5].

As we refine the solid by adding increasingly more, increasingly thinner disks, so that ∆y converges to 0, the sum converges to a definite integral that gives the exact volume V,

\displaystyle V = \lim_{n\to\infty} V_n = \int_1^5 \frac{\pi}{y^2} \, dy

V = -\dfrac\pi y\bigg|_{y=1}^{y=5} = \boxed{\dfrac{4\pi}5}

8 0
2 years ago
Please help me :( !!<br> Will give brainliest &lt;3
katovenus [111]

Answer:

2=173

4=309

7=513

9=649

Step-by-step explanation:

Since she starts with 37MB already download 37 will be a constant and for every second she is home she downloads 68 more MBs so to get the answers for the table you just have to do 37+ 68*(the number of seconds)

2=37+68(2)=173

4=37+68(4)=309

7=37+68(7)=513

9=37+68(9)=649

8 0
3 years ago
Need this answer asap giveing 20 points!
katen-ka-za [31]

Answer:

ok um what’s the question?

6 0
3 years ago
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