Solve 4x- c= k for x.<br> A. x = 4(k - c)<br> O B. x = 4(k+ c)<br> O C. x-***<br> O D. x-**

If Marie were to paint her living room alone, it would take 7 hours. Her sister Barbara could do the job in 8 hours. How many ho

Zielflug [23.3K]

Answer:

$\sf\longmapsto \: 3.73 hours$

Step-by-step explanation:

$\sf\longmapsto \: \frac{1}{7 } + \frac{1}{8}$

$\sf\longmapsto \: \frac{15}{56}$

Now, Reciprocal–

$\sf\longmapsto \: \frac{56}{15}$

$\sf\longmapsto \: 3.73 hours$

4 0

3 years ago

The taxi fare in monopolis city is $1.50 for the first mile and additional mileage charged at the rate of $0.25 for each additio

kifflom [539]

Answer:

5

Step-by-step explanation:

if you add $1.50 +50 cents its $2.00 count by 2's until you get

to 10 and thats 5 how i got 50 cents 25 cents for a half mile

25+25 is 50.

4 0

3 years ago

What is the slant height for given pyramid to the nearest to the whole unit?

koban [17]

Answer:

B 5 cm

Step-by-step explanation:

The bottom leg of the shaded triangle is 1/2 of the length of the side, so is 3 cm. The vertical leg of the shaded triangle is the height of the pyramid, given as 4 cm.

The slant height is the hypotenuse of the shaded triangle, so can be found from your knowledge of the 3-4-5 triangle, or from the Pythagorean theorem.

If s is the slant height, then ...

s^2 = 3^2 + 4^2 = 9 +16 = 25

s = √25 = 5

The slant height is 5 cm.

6 0

3 years ago

Read 2 more answers

What is the product of 47.55(8.4)?

Gre4nikov [31]

Answer:

399.420

Step-by-step explanation:

1) Use the algorithm method.

4 7 . 5 5

× 8 . 4

1 3 2 2

1 9 . 0 2 0

3 6 4 4

3 8 0 . 4 0 0

3 9 9 . 4 2 0

2) Therefore, $47.55\times 8.4=399.420$ .

399.420

5 0

2 years ago

A parcel delivery service will deliver a package only if the length plus girth (distance around) does not exceed 84 in. What are

Lesechka [4]

Answer:

a) $\frac{28}{\pi}$ in

b) 28 in

c) 784 in²

Step-by-step explanation:

Let the length be 'L'

and the radius be 'r'

Thus, according to the question

L + 2πr = 84 in

L = 84 - 2πr ............(1)

Volume of the cylinder, V = πr²L

substituting the value of L from 1, we get

V = πr²(84 - 2πr)

or

V = 84πr² - 2π²r³

for points of maxima, differentiating the above equation and equating it to zero

$\frac{dV}{dr}=\frac{d(84\pi r^2-2\pi^2 r^3))}{dr}$

or

2(84)πr - 3(2)π²r² = 0

or

2πr(84 - 3πr) = 0

or

r = 0 and 84 - 3πr = 0

or

⇒ 3πr = 84

or

⇒ r = $\frac{28}{\pi}$ in

since, the radius cannot be zero therefore, r = 0 is neglected

Therefore,

a) The radius of the largest cylindrical package = $\frac{28}{\pi}$ in

b) from (2)

L = 84 - 2πr

or

⇒ L = $84 - 2\pi\times\frac{28}{\pi}$

or

⇒ L = 84 - 56 = 28 in

The length of the largest cylindrical package = 28 in

c ) The volume of the largest cylindrical package ,V = πr²L

= $\pi\times\frac{28}{\pi}\times28$

= 784 in²

7 0

3 years ago

Solve 4x- c= k for x. A. x = 4(k - c) O B. x = 4(k+ c) O C. x-*** O D. x-**

Solve 4x- c= k for x. A. x = 4(k - c) O B. x = 4(k+ c) O C. x-* O D. x-