What is the surface area of a sphere with a radius of 30m?
A 3,600 (pie) M ^2
B 90,000 (pie) M ^2
C 1,800 (pie) M ^2
D 900 (pie) M ^2

Step-by-step explanation:

or,(x-2)(x-4)+(3x-11)(x-3)/(x-3)(x-4)=(4x+13)/(x+1)

or,x^2-4x-2x+8+3x^2-9x-11x+33/x^2-4x-3x+12=(4x+13)/(x+1)

or,4x^2-4x-2x-9x-11x+8+33/x^2-7x+12=(4x+13)/(x+1)

or,4x^2-26x+41/x^2-7x+12=(4x+13)/(x+1)

or, (x+1)(4x^2-26x+41)=(4x+13)(x^2-7x+12)

or,4x^3-26x^2+41x+4x^2-26x+41=4x^3-28x^2+48x+13x^2-91x+156

or,-26x^2+4x^2+28x^2-13x^2+41x-26x-48x+91x=156-41

or,-7x^2+58x=115

or,-7x^2+58x-115=0

or,-(7x^2-58x+115)=0

or,7x^2-58x+115=0

or,7x^2-(35+23)x+115=0

or,7x^2-35x-23x+115=0

or,7x (x-5)-23 (x-5)=0

or, (x-5)(7x-23)=0

Either, Or,

(x-5)=0 (7x-23)=0

or,x=0+5 or,7x=23

:x=5 :x=23/7

Hence,x=5 or 23/7

Answer: 238

Step-by-step explanation:

The formula to calculate the nth term of an arithmetic progression = a + (n-1)d

Based on the question,

a = -140

90th term = a + 89d = 483

We need to get the value of the common difference

a + 89d = 483

-140 + 89d = 483

89d = 483 + 140

89d = 623

d = 623/89

d = 7

Therefore 55term will be:

= a + (n - 1)d

= a + (55 - 1)d

= a + 54d

= -140 + 54(7)

= -140 + 378

= 238

Answer:

1.25 hours

Step-by-step explanation:

Benjamin rode tghe train for 45 minutes. Then it took him another 30 minutes to walk to his friend's house. How many hours did he spend riding and walking to his friend's house?

The number of hours he spent riding and walking to his friends house is calculated as:

45 minutes + 30 minutes

= 75 minutes

Converting this to hours

60 minutes = 1 hour

75 minutes = x

Cross Multiply

60 × x = 75 × 1

x = 75/60

x = 1.25 hours

Answer:

y = (x + 1)(x - 0.586) ( x - 3.414)

Step-by-step explanation:

I sure wouldn't recommend doing this by trial and error.

I made a graph of which you can see. Every time this monster touches the x axis and speeds away upward is two equal roots of y. So the square root would be one of each of them.

y = (x + 1)^2 (x - 0.586)^2 (x - 3.414)^2

are the listed roots.

The square root is

y = (x + 1)(x - 0.586) ( x - 3.414)

Do I know that this is right? I don't. But I can tell you this: if you multiply 1^2 * (-0.586)^2 * (- 3.414)^2

you get 4 just as you should. Amazing that we have tools that do that sort of thing.

Answer:

b

Step-by-step explanation:

I think it's B... but I could be wrong

Answer:

A

Step-by-step explanation:

You need a value that keeps 79% of the previous value. 79% is 0.79 as a decimal.

You get that by taking 100% of the value and subtracting 21% of the value. Said easier (100% x - 21%x = 79% of x.

r = 0.79

Answer:

c

Step-by-step explanation:

10x10x10x10x10x10=1000000x1.2=1200000

Answer:

-23

Step-by-step explanation:

Given 4v-3

evaluate when v = -5

So basically we want to find the value of the expression when the variable (v) equals -5

so

* plug in -5 for v*

4(-5)-3

4*-5=-20

-20-3=-23

So we can conclude that when v = -5 the value of the expression is -23

Answer:

Explanation:

given the expression: 4v-3

if  v = -5

4v-3 (let's subsitute v)

4v-3 = 4×(-5)-3

4v-3 = -20 - 3

4v-3 = -23

Answer:

445.4

Step-by-step explanation:

Well to find the volume of a rectangular prism, the formula is l x w x h (length x width x height). The length is 3.4, the width is 10, and the height is 13.1. If you multiply all three of those numbers, you get 445.4.

Answer:

Approximately 2 weeks

Step-by-step explanation:

Given data

Cost of bike=  £250

Assuming she works for 6 days

1.Babysitting

6*2.75=£16.5 per day

for 6 days

=16.5*6

=£99

2. Saturday Job

=£27.50

Total earnings for the week

=£27.50+£99

=£126.5 weekly

Hence it will take her

=250/126.5

=1.97 week

Approximately 2 weeks to save up the amount

Answer:

2.83

Step-by-step explanation:

Can I have Brainliest?

Answer:

If you see the little square on the side maybe try to measure it and keep putting it on top and see how many of then till the top. (if you knwo what i mean )

Step-by-step explanation:

I am SUPER sorry if you get it wrong :(

Answer:

3√2 + 2√3

Step-by-step explanation:

2√2 + 5√3 + (√2 - 3√3)

(2√2 + √2 ) + (5√3 - 3√3)

(2+1) √2 + (5-3) √3

3√2 + 2√3

The answer is 7.70674230227

Answer:

b. K,M,J,L

Step-by-step explanation:

From weakest to strongest values:

-0.78, -0.15, 0.35, 0., 67

Weakest to strongest data sets:

K, M, J, L

|a| is the amplitude so

[tex] | - 1| = 1[/tex]

Answer:

k

Step-by-step explanation:

don't know

[tex]\huge{\mathbb{\tt{QUESTION↓}}}[/tex]

1. in how many ways can you arrange five mathematics books,four science books,and three english books, on a shelf such as that books of the same subject are kept together.

[tex]\huge{\mathbb{\tt{SOLUTION↓}}}[/tex]

[tex]\textsf{ Given that: M=5 , S=4 , E=3}[/tex]

[tex]\begin{gathered}\\\end{gathered} [/tex]

[tex]\textsf{ Using the Linear Permutation:} [/tex]

[tex]\sf{P=n!}P=n![/tex]

[tex]\sf{P=5!}P=5![/tex]

[tex]\sf{P=5×4×3×2×1}[/tex]

[tex]\sf{P=120}[/tex]

[tex]\begin{gathered}\\\end{gathered}[/tex]

P=n!}

P=4!

P=4×3×2×1

P=24

P=n!

P=3!

P=3×2×1

P=6

Multiply all the permutations:

P=120×24×6

P=17,280

[tex]\huge{\mathbb{\tt{ANSWER↓}}}[/tex]

There are 17,280 ways we can arrange in a shelf.

#CarryOnLearning

#LetsEnjoyTheSummer

Answer: This is true

Step-by-step explanation:

Answer:

2x + 7 > 25 ; 9

Step-by-step explanation:

Total worth of Jacob's cards = $25

Number of Bonita's card = x

Worth of Bonita's card = $2 each

Worth of Madison card = $7

Bonita and Madison cards are worth more than Jacob's card

The inequality

Bonita = 2x ; Madison = 7

2x + 7 > 25

Solving for x

2x > 25 - 7

2x > 18

x > 18 /2

x > 9

Answer:

Step-by-step explanation:

1. 1.643

2. -0.03

Answer:

B

Step-by-step explanation:

To find the y- intercept let x = 0

From the table for f(x)

When x = 0 → f(x) = - 4

That is the y- intercept = - 4

Given

g(x) = 3 [tex](2)^{x}[/tex]

let x = 0 , then

g(0) = 3 [tex](2)^{0}[/tex] [ [tex]2^{0}[/tex] = 1 ]

       = 3 × 1

       = 3

That is the y- intercept = 3

Thus the y- intercept of g(x) is greater → B

Answer:

Option 3

Step-by-step explanation:

The sentence provides the reasoning for a possible explanation.

Now, let's look at all the possible answers:

1. This doesn't show us that scientists cannot agree. A sentence like that could be that many scientists have analyzed the region, but they did not find anything.

2. This does not tell us that this region is interesting. A sentence like that would be saying that the cause of the lightning is unknown.

3. This is correct- it provides evidence for a main theory.

4. This does not explain why people name the lightning a certain way. A sentence like that could be a local fable.

Answer:

Supplementary

Step-by-step explanation:

Answer:

1. 14.666 ¯ over the 3

2. 14.034 ¯ over the 3

Step-by-step explanation:

Answer:

6, 9, 12

Step-by-step explanation:

sum of two sides must be greater than third side

Answer:

94 meters

Step-by-step explanation:

The equation of this problem will be set up as such: [tex]188=2\pi r[/tex].

Answer:

i think B

Step-by-step explanation:

i think B

Answer:

D is one (in my opinion)

Step-by-step explanation:

Only D works, because the two least (smallest) side lengths must exceed the greatest side length in order to actually construct a

Answer:

The lowest length on the third side is less that 30 and the largest is between 40 and 30

Step-by-step explanation:

Ted popped a baseball straight up with an initial upwards velocity of 48 ft/s. The height the ... - did not match any video results.

Suggestions:

Make sure that all words are spelled correctly.

Try different keywords.

Try more general keywords.

Try fewer keywords.

Answer:

It is a function

Domain: -8, -6, -4, -3

Range: -6, -4, -3, 4

Step-by-step explanation:

Yes it is a function since there are no multiple x values

Domain are the x-values:

-8, -6, -4, -3

Range are the y-values:

-6, -4, -3, 4

Answer:

The percent change for this question is -12.5%

Step-by-step explanation:

I don't really understand what you want me to find so Im going to find percent change and difference. The difference is -9 and percent change is -12.5