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3 years ago

-10+2d=8 pls help me

Mathematics

1 answer:

tangare [24]3 years ago

4 0

Answer:

it is 9

Step-by-step explanation:

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Round 6.487 and 2.049 to the hundredths place. What is the sum of the rounded numbers? *

Reika [66]

Answer:

8.54

Step-by-step explanation:

If thousandth's place is ≥ 5 , then add 1 to the hundredth place.

6.487 = 6.49

2.049 = 2.05

6.487 + 2.049 = 6.49 + 2.05 = 8.54

5 0

3 years ago

The volume of a right circular cone with both

Rufina [12.5K]

Question:

The volume of a right circular cone with both diameter and height equal to h is 250/7 cm³.

What is the value of h?

Answer:

A. 5

Step-by-step explanation:

Given

Solid Shape: Cone

Volume = 250/7

Diameter = Height

Required

Find the height of the cone

Provided that the diameter (D) and the height (h) are equal; This implies that

D = h ------ (1)

Also, Diameter (D) = 2 * Radius (r)

D = 2r

Substitute 2r for D in (1)

2r = h

Multiply both sides by ½

½ * 2r = ½ * h

r = ½h

Volume of a cone is calculated by;

Volume = ⅓πr²h

⅓πr²h = 250/7

Substitute ½h for r

$\frac{1}{3} * \pi * (\frac{1}{2}h)^2 * h = \frac{250}{7}$

Take π as 22/7, the expression becomes

$\frac{1}{3} * \frac{22}{7} * (\frac{1}{2}h)^2 * h = \frac{250}{7}$

Open the bracket

$\frac{1}{3} * \frac{22}{7} * \frac{1}{4}h^2 * h = \frac{250}{7}$

Multiply both sides by 7

$7 * \frac{1}{3} * \frac{22}{7} * \frac{1}{4}h^2 * h = \frac{250}{7} * 7$

$\frac{1}{3} * 22 * \frac{1}{4}h^2 * h = 250$

Multiply both sides by 3

$3 * \frac{1}{3} * 22 * \frac{1}{4}h^2 * h = 250 * 3$

$22 * \frac{1}{4}h^2 * h = 750$

Multiply both sides by 4

$4 * 22 * \frac{1}{4}h^2 * h = 750 * 4$

$22 * h^2 * h = 3000$

$22 * h^3 = 3000$

Divide both sides by 22

$h^3 = \frac{3000}{22}$

$h^3 = 136.36$

Take cube root of both sides

$h = \sqrt[3]{136.36}$

$h = 5.15$

$h = 5$ (Approximated)

6 0

3 years ago

How many solutions can be found for the equation 4x 5 = 10? Zero One Two Infinitely Many.

nydimaria [60]

Answer:

there is one answer

Step-by-step explanation:

4x⁵ = 10 →

$x = \sqrt[5]{ \frac{10}{4} } = \sqrt[5]{2.5}$

3 0

3 years ago

Transforme em notação científica: a- 5000 b-14000 c-216000000 d-0,00002 e-0,00016 f-0,00000596

dedylja [7]

Can u translate into English language

4 0

3 years ago

a dress store is having a sale where all merch is 1/4 off a women buys 48$ of merch at the sale price. what would she have to pa

Dmitry_Shevchenko [17]

Answer:

$64

Step-by-step explanation:

1/4 means 25%

$48 means 75%

$48 divided by 3 equals 16

$48 plus 16 equals $64

6 0

3 years ago