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4 years ago

15

Which method is best for solving the system of equations below, where you can eliminate one variable term by adding the equation

s?

2 answers:

Natalija [7]4 years ago

6 0

You can do it by a or d however a is more common and do do d until later on

Novay_Z [31]4 years ago

4 0

Answer:

Substitution

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The volume V of a right‑circular cylinder is computed using the values d = 3.1 m for the diameter and h = 6.6 m for the height.

pantera1 [17]

Answer:

6%

Step-by-step explanation:

A function f(x) can by approximated at and around a point, say x = a by,

f(x) = f(a) + f'(a)(x-a)

where, $f'(x)=\frac{df}{dx}$

Here, volume V is a function of radius r and height h. In the 2 dimensional case, we have to take the partial derivatives.

Given,

$V=\pi r^2h$

or, $dV=\frac{\partial V }{\partial r}dr+ \frac{\partial V }{\partial h}dh$

at r = 1.55 m and h = 6.6 m

$dr=0.02\times1.55m=0.031m$

$dh=0.02\times6.6m=0.132m$

$\frac{\partial V }{\partial r}=2\pi r h=2\pi \times 1.55\times 6.6=64.277$

$\frac{\partial V }{\partial h}=\pi r^2=7.5477$

Therefore, $dV=(64.277\times.031)+(7.5477\times0.132)=2.9889m$

Also, $V=\pi r^2h=49.8147m$

Hence, maximum error is given by,

$R=\frac{2.9889}{49.8147} \times 100$

= 6%

7 0

4 years ago

Compute the number of vinyl tiles, measuring 25 cm each side, needed to tile a kitchen measuring 102 ft. by 18 ft. Try not to ro

nadya68 [22]

Answer: 2730 tiles (Approx)

Step-by-step explanation:

Since, The side length of each side = 25

According to the question the shape of the tile is square.

Thus, the area of one tile = 25 × 25 = 625 $cm^2$

Also, we need to tile a kitchen measuring 102 ft. by 18 ft

Thus, the area of the room in which we have to tile = 102 × 18 = 1836 $feet^2$ = 1836×30.48 × 30.48 = 1705699.8144 $cm^2$

Thus, the total number of the tiles = the area of the room in which we have to tile / the area of one tile = $\frac{1705699.8144}{625} = 2729.11970304$

Since, we must take 2730 tiles to tile the kitchen.

3 0

3 years ago

Read 2 more answers

Use the Distributive Property to simplify this expression.<br> 15. (7 + 6w)6

antiseptic1488 [7]

(7+6w)6

7 x 6 = 42

6 x 6 = 36

so it becomes:

42 +36w

7 0

4 years ago

Solve for x. Answer must be greater than 76<br> 34+12x<76

Valentin [98]

Answer:

x < 3.5

Step-by-step explanation:

34 + 12x < 76

12x < 76 - 34

12x < 42

x < 42 ÷ 12

x < 3.5

6 0

3 years ago

Alex grew 1 foot over the past year. He is now 6 feet tall

Alekssandra [29.7K]

What is the question?

8 0

4 years ago