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3 years ago

Plz help me it urgent

Mathematics

2 answers:

kykrilka [37]3 years ago

4 0

Answer:

12/(3/4) = 12x4/3 = 16 counters

Step-by-step explanation:

so your answer is 16 counter i redid the math and Nonsibi helped me see where I went wrong sorry

adelina 88 [10]3 years ago

3 0

To find the amount of counters divide the length of the trail by the counter interval distance.

Division is the same as multiplying by the reciprocal.

12/(3/4) = 12x4/3 = 16 counters

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Solve for the variable x.

inna [77]

Answer:

Step-by-step explanation:

Equating the terms :

x + 3 = 2x - 2

Add 2 on both sides :

x + 3 + 2 = 2x - 2 + 2
x + 5 = 2x

Subtract x from both sides :

x + 5 - x = 2x - x
<u>x = 5</u>

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2 years ago

jada has some money she sells 1 balloon for 5cent. Now she has 13cent. How much money did jada have before selling the balloon?

seraphim [82]

Answer:

8 cents

Step-by-step explanation:

To find out how much money Jada had before seling the balloon, we can subtract 5 from 13.

13 - 5 = 8

So, Jada had 8 cents before selling the balloon.

3 0

3 years ago

Help this is my last question can somebody plz b help me?

Kazeer [188]

Answer:

y = (4/3)x

Step-by-step explanation:

You have to find the y-intercept, b. Do this by substituting in the x and y values into the equation:

12 = (4/3)(9) + b

12 = 12 + b

b = 0

So, y = (4/3)x

Hope that helps! :D

3 0

3 years ago

Read 2 more answers

FInd the length of DB and CD. Please help!

Lerok [7]

Step-by-step explanation:

DB length = 5 1/4 + 2/3

=21/4 + 2/3

= 63/12 + 8/12 = 71/12

CD length = 5 1/4 -2 = 3 1/4

3 0

3 years ago

Use the shell method to write and evaluate the definite integral that represents the volume of the solid generated by revolving

harina [27]

Answer:

The volume of the solid is 714.887 units³

Step-by-step explanation:

* Lets talk about the shell method

- The shell method is to finding the volume by decomposing

a solid of revolution into cylindrical shells

- Consider a region in the plane that is divided into thin vertical

rectangle

- If each vertical rectangle is revolved about the y-axis, we

obtain a cylindrical shell, with the top and bottom removed.

- The resulting volume of the cylindrical shell is the surface area

of the cylinder times the thickness of the cylinder

- The formula for the volume will be: V = $\int\limits^a_b {2\pi xf(x)} \, dx$ ,

where 2πx · f(x) is the surface area of the cylinder shell and

dx is its thickness

* Lets solve the problem

∵ y = $x^{\frac{5}{2}}$

∵ The plane region is revolving about the y-axis

∵ y = 32 and x = 0

- Lets find the volume by the shell method

- The definite integral are x = 0 and the value of x when y = 32

- Lets find the value of x when y = 0

∵ $y = x^{\frac{5}{2}}$

∵ y = 32

∴ $32=x^{\frac{5}{2}}$

- We will use this rule to find x, if $x^{\frac{a}{b}}=c, then=== x=c^{\frac{b}{a}}$ , where c

is a constant

∴ $x=(32)^{\frac{2}{5}}=4$

∴ The definite integral are x = 0 , x = 4

- Now we will use the rule

∵ $V = \int\limits^a_b {2\pi}xf(x) \, dx$

∵ y = f(x) = x^(5/2) , a = 4 , b = 0

∴ $V=2\pi \int\limits^4_0 {x}.x^{\frac{5}{2}}\, dx$

- simplify x(x^5/2) by adding their power

∴ $V = 2\pi \int\limits^4_0 {x^{\frac{7}{2}}} \, dx$

- The rule of integration of $x^{n} is ==== \frac{x^{n+1}}{(n+1)}$

∴ $V = 2\pi \int\limits^4_0 {x^{\frac{9}{2}}} \, dx=2\pi[\frac{x^{\frac{9}{2}}}{\frac{9}{2}}]$ from x = 0 to x = 4

∴ $V=2\pi[\frac{2}{9}x^{\frac{9}{2}}]$ from x = 0 to x = 4

- Substitute x = 4 and x = 0

∴ $V=2\pi[\frac{2}{9}(4)^{\frac{9}{2}}-\frac{2}{9}(0)^{\frac{9}{2}}}]=2\pi[\frac{1024}{9}-0]$

∴ $V=\frac{2048}{9}\pi=714.887$

* The volume of the solid is 714.887 units³

5 0

3 years ago