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2 years ago

Solve. -15 = -6n – 3 + 6

Mathematics

2 answers:

MrRa [10]2 years ago

6 0

Answer:

n = 3.

Step-by-step explanation:

-15 = -6n – 3 + 6

-15 + 3 - 6 = -6n

-18 = -6n

n = -18/-6

n = 3.

cestrela7 [59]2 years ago

4 0

Answer:

n = 3

Step-by-step explanation:

- 15 = - 6n - 3 + 6

- 15 + 3 - 6 = - 6n

- 18 = - 6n

n = -18 / -6

n = 3

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Please help me with this

horrorfan [7]

Answer:

$\dfrac{4000\pi}{3}$ ft³

Step-by-step explanation:

First, let's figure out how to get the <em>volume </em>of a sphere from its <em>surface area</em>. If r is the radius of our sphere, then

The formula for a sphere's surface area is $A = 4\pi r^2$

The formula for a sphere's volume is $V=\frac{4}{3}\pi r^3$

So to get from area to volume, we have to <em>divide the area by 3 </em>and then <em>multiply it by r.</em> Mathematically:

$V=\frac{A}{3}r$

Before we solve for V though, we need to find the radius of our sphere. Thankfully, we're given the surface area - $400\pi$ ft² - so we can use the area formula to find that radius:

$A=4\pi r^2=400\pi\\r^2=100\\r=10$

And now that we have our radius, we can put it into our volume formula to find

$V=\frac{A}{3} r=\frac{400\pi}{3}(10)=\frac{4000\pi}{3}$ ft³

4 0

2 years ago

Jamie has a rectangular room in her home with a width of 8 feet and a diagonal distance of 17 feet. Find the total area of the r

Grace [21]

Step-by-step explanation:

8²+x²=17²

74+×²=289

x²=225

Sq root both sides

x=15

15×8=120 Sq ft

8 0

2 years ago

For his craft project, James bought 1010 10 10 pieces of ribbon that were each 2.1 feet2.1\text{ feet} 2.1 feet 2, point, 1, sta

BlackZzzverrR [31]

Answer:

<h2>Total yards of ribbon bought is 6.993yards of ribbon</h2>

Step-by-step explanation:

Total pieces of ribbon James bought for his craft project = 10pieces. If each pieces of ribbon were 2.1feet long, the total number of feet for 10ribbons is expressed as;

$= 10 * 2.1\\= 21feets$