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3 years ago

What is the surface area of sphere with radius 13 ft

Mathematics

2 answers:

Vikentia [17]3 years ago

8 0

A=2123.72 sq ft A=4πrsq=4xπx13sq=2123.71663sq ft

STatiana [176]3 years ago

7 0

2123.72ft²lololololol this is the answer btw

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What is the value of X? Enter your answer in the box ASAP

Komok [63]

Hello!

The line on the two lines means they equal each other

5x + 10 = 40

Subtract 10 from each side

5x = 30

Divide both sides by 5

x = 6

The answer is 6

Hope this helps!

3 0

3 years ago

Read 2 more answers

What is the value of X Enter your answer in the box X=

Andreyy89

Answer: x = 2.8283

Step-by-step explanation:

pythagorean theory or sohcahtoa or sin law

T = 60' and T = 45': S = 90' : T = 45' : R = 90'

t = 3.464

sin law (i can't rlly show u)

q = 3.99

if u don't know what q is, it is the length of the middle line also known as RT

then u do

180 - 45 - 90 = Q

45 = Q

with 45 we can do sin law again

x = 2.8283 is the length of x

7 0

3 years ago

Help me pls i need it

NikAS [45]

Answer:

y = 255x + 6559

Step-by-step explanation:

Function Modeling

We have the following relationship between the minutes into the ride (x) and the elevation of the tram (y):

x={2,5,9,14}

y={7069,7834,8854,10129}

We first test if the relationship is linear or not.

A linear relationship is tested by calculating the slope from any pair of points.

Suppose we know the line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

$\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Selecting the first two points (2,7069) and (5,7834)

$\displaystyle m=\frac{7834-7069}{5-2}=\frac{765}{3}$

m = 255

Selecting the first two points (5,7834) and (9,8854)

$\displaystyle m=\frac{8854-7834}{9-5}=\frac{1020}{4}$

m=255

If we repeat the calculation with any pair of points, we get the same value for the slope, thus we can conclude the relationship is linear.

Using the point-slope form of the line:

y - k = m( x - h )

We select the point (2,7069)

y - 7069 = 255( x- 2 )

Operating:

y - 7069 = 255x - 510

Adding 7069:

y = 255x - 510 + 7069

y = 255x + 6559

7 0

3 years ago

Point S is between R and T on line segment RT. Use the given information to write an equation in terms of x.

Setler79 [48]

Answer: $\bold{a)\quad x=\dfrac{35}{3}\qquad RS=13\dfrac{1}{3}\qquad ST=7\dfrac{2}{3}}$

b) x = 12 RS = 20 ST = 40

c) x = 7 RS = 6 ST = 11

Step-by-step explanation:

Use the Segment Addition Postulate: RS + ST = RT

a) (2x - 10) + (x - 4) = 21

3x - 14 = 21

3x = 35

x $=\dfrac{35}{3}$

RS = 2x - 10

$=2\bigg(\dfrac{35}{3}\bigg)-10$

$=\dfrac{70}{3}-\dfrac{30}{3}$

$=\dfrac{40}{3}$

$=\large\boxed{13\dfrac{1}{3}}$

ST = RT - RS

$=21-13\dfrac{1}{3}$

$=\large\boxed{7\dfrac{2}{3}}$

Use the same formula to solve for b and c

3 0

3 years ago

Read 2 more answers

PLEASE HELP!!! Find the area of each figure to the nearest tenth. Show your work

Anettt [7]

I cannot make out the height along the left side. However this problem is quite simple, let s= that measurement along the left side vertical line. The area of this figure is just the area of a rectangle added to the area of a triangle...

A=(110*s)+(180-110)(s-50)/2

A=110s+35s-3500

A=(145s-3500) cm^2

...

The second problem is just a triangle:

A=4*6/2

A=12 cm^2

6 0

4 years ago