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navik [9.2K]
4 years ago
11

Taking notes while surveying is very important to identify what you do and do not understand.

Mathematics
1 answer:
tekilochka [14]4 years ago
3 0

Answer:False

Step-by-step explanation:

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The base of a solid is bounded by the curve y = sqrt (x+1) the x-axis and the line x = 1. the cross sections, taken perpendicula
Andrei [34K]

See attached for a sketch of some of the cross sections.

Each cross section has area equal to the square of the side length, which in turn is the vertical distance between the curve y = √(x + 1) and the x-axis (i.e. the distance between them that is parallel to the y-axis). This distance will be √(x + 1).

If the thickness of each cross section is ∆x, then the volume of each cross section is

∆V = (√(x + 1))² ∆x = (x + 1) ∆x

As we let ∆x approach 0 and take infinitely many such cross sections, the total volume of the solid is given by the definite integral,

\displaystyle \int_{-1}^1 (x+1) \, dx = \left(\frac{x^2}2 + x\right) \bigg|_{-1}^1 = \boxed{2} ~~~~ (B)

3 0
3 years ago
Maria used a number line to find 12 ÷ 4.
aleksandrvk [35]

Answer:

12 divided by 4 is 3, this is how::

Step-by-step explanation:

            ------ .(-4)------- .(-4) ---------.(-4)

<---------------------------------------------------->

0  1  2  3  4  5  6  7  8  9  10  11  12

hope this made sense

8 0
3 years ago
Read 2 more answers
The ordered pair (-4, -5) is a solution of the following system of equations 2x+y=13 19x+13y=15
liberstina [14]

Answer:

Step-by-step explanation

672

8 0
3 years ago
Add the following numbers. (-4) + (-9) =
soldi70 [24.7K]

Answer:

-13

Step-by-step explanation:

Adding a negative means that you subtract the number as + (-) = -

This means that the equation is -4-9=-13.

6 0
3 years ago
How do you solve a/6=15/2?
spayn [35]
15/2 = 7.5
7.5 times 6 = 45
Check work: 45/6 = 7.5

8 0
3 years ago
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