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3 years ago

What is the surface area of s sphere with a radius of 4ft

1 answer:

8 0

The formula you use to find the surface area of a sphere is A=4 π r^2
4×π = 12.5663706143
r = 4
4^2 = 16
12.5663706143 × 16 = 201.061929829
Final answer: the surface area is about 201 ft.

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HELP PLEASE

scoray [572]

Solve the two-step equation and identify the steps.

Equation: 1.4x + 6.1 = –7.9

Solution: ======> x = -10

Long Version from Calculation 1

Equation

1.4x + 6.1 = –7.9

Steps:

Step 1): Multiply Both sides by 10:

1.4x * 10 + 6.1 * 10 = –7.9 * 10

Refine:

14x + 61 = -79

Step 2): Subtract 61 from both sides:

14x + 61 - 61 = -79 - 61

Simplify:

14x = 140

Divide both sides by 14:

14x/14 = -140/14

Simplify:

14x/14 = x =====> 14x/4

Divide the numbers:

14/14 = 1

= x

-140/14 = -10

-140/14

Apply the fraction Rule:

-a/b = - a/b

= -140/14

Divide the numbers:

140/14 = 10

= -10

Answer, Letter Choice, (A), x = -10

Short Version From Calculator Number 2:

Equation: 1.4x + 6.1 = -79

Solution Option (A), x = -10

Let's solve your equation step by step:

1.4x + 6.1 = -7.9

Step 1 Subtract 6.1 from both sides:

1.4x + 6.1 - 6.1 = -7.9 - 6.1

1.4x = -14

Step 2 Divide both sides by 1.4:

1.4x/1.4 = -14/1.4

x = -10

Answer x = -10 Option (A)

Hope that helps!!!! : )

4 0

3 years ago

Read 2 more answers

eton's baby sister took a nap for 2 hours and 22 minutes yesterday and 1 hour and 35 minutes today.how many minutes did she slee

Ksenya-84 [330]

2:22

-1:35

______

47 minutes

6 0

3 years ago

Read 2 more answers

What is wrong with this "proof"? "Theorem" For every positive integer n,n i =1 i = (n + 1 2 ) 2 /2. Basis Step: The formula is t

creativ13 [48]

Answer:

The basis step is not even true.

Step-by-step explanation:

The basis step would be for n = 1.

If the basis step was true then you would have that.

$\sum\limits_{i=1}^{1} i = \frac{(1+1/2)^2}{2}$

Now. When you say

$\sum\limits_{i=1}^{1} i$

That's just a fancy way of writing 1.

On the other hand

$\frac{(1+1/2)^2}{2} = \frac{9}{4} = 2.25$

Therefore

$1 \neq 2.25$

And the basis hypothesis is false.

7 0

3 years ago

Write an equation in point slope form for each line. (1,6) and (2,3)

fomenos

Two equations you can use in point slope form are:

y-6 = -3(x-1)
y-3 = -3(x-2)

Hope this helps✨❤️

4 0

3 years ago

Read 2 more answers

Find the ordered pairs for the x- and y-intercepts of the equation 3x − 2y = 18 and select the appropriate option below.

horsena [70]

Pretty sure the answer is B

8 0

3 years ago