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1 year ago

Solve negative four and one fifth ÷ two and one fourth.

Mathematics

1 answer:

goldfiish [28.3K]1 year ago

6 0

Answer:

B. negative one and 39 over 45

Step-by-step explanation:

Convert this into expression:

negative four and one fifth ÷ two and one fourth
- 4 1/5 ÷ 2 1/4

Convert each to improper fraction:

- 4 1/5 = - 21/5
2 1/4 = 9/4

Divide the fractions:

- 21/5 ÷ 9/4 =

- 21/5 × 4/9 =

- 84 / 45 =

- 1 13/15

The matching choice is B.

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3 years ago

it cost $35 for one adult and two children to attend a show. It cost $60 for two adults and three children to attend the same sh

N76 [4]

Assume that,
adult = x
child = y

x+2y = 35 (1st equation)
2x+3y = 60 (2nd equation)
x = 35-2y (3rd equation)

Substitute 3 into 2 :

2(35-2y) + 3y =60
70-4y +3y = 60
y = 10

x+2y = 35
x+2(10) =35
x +20 =35
x = 15

One adult = $15

7 0

3 years ago

Plllzzz im new and i neeed help

ella [17]

Answer:

4082

Step-by-step explanation:

Given

The composite object

Required

The volume

The object is a mix of a cone and a hemisphere

Such that:

$r = 10cm$ ---- radius (r = 20/2)

$h = 19cm$

<u>Hemisphere</u>

$r=10cm$

The volume of the cone is:

$V_1 = \frac{1}{3}\pi r^2h$

$V_1 = \frac{1}{3}\pi * 10^2 * 19$

$V_1 = \frac{1900}{3}\pi$

The volume of the hemisphere is:

$V_2 = \frac{2}{3}\pi r^3$

$V_2 = \frac{2}{3}\pi 10^3$

$V_2 = \frac{2000}{3}\pi$

So, the volume of the object is:

$V = V_1 + V_2$

$V = \frac{1900}{3}\pi + \frac{2000}{3}\pi$

$V = \frac{3900}{3}\pi$

$V = 1300\pi$

$V = 1300 * 3.14$

$V = 4082$

8 0

3 years ago