sal recorded the outdoor temperature as -4°F at 7:30 am . at noon , it was 22°F . sal said the temperature changed by 18°F because 22-4=18. Is sal right or wrong .

Answer:

280

Step-by-step explanation:

Answer:

The answer is below

Step-by-step explanation:

a) dV/dt = 5 cm³/s

The volume (V) of the bubble is:

[tex]V=\frac{4}{3} \pi r^3\\\\Differentiating\ with\ respect\ to \ time(t)\\\\\frac{d}{dt}(V)=4\pi r^2 \frac{dr}{dt} \\\\Substituting\ \frac{d}{dt}(V)=5\ cm^3/s \ and\ r = 10\ cm\\\\5 = 4\pi *10^2*\frac{dr}{dt}\\\\5=400\pi *\frac{dr}{dt}\\\\\frac{dr}{dt}=0.004\ cm/s[/tex]

b) The surface area of the sphere (A) is:

[tex]A=4\pi r^2\\\\Differentiating\ w.r.t.\ t:\\\\\frac{dA}{dt}= 8\pi r\frac{dr}{dt} \\\\r=10, dr/dt=0.004\\\\\frac{dA}{dt}= 8\pi *10*0.004\\\\\frac{dA}{dt}=1\ cm^2/s[/tex]

The rate at which the radius of the bubble is changing at that time is [tex]0.0125 \pi cm^2/s[/tex]

The rate at which the surface area of the bubble is changing at that time is [tex]\pi^2 cm^2/s[/tex]

The formula for calculating the volume of a sphere is expressed as;

[tex]V =\frac{4}{3} \pi r^3[/tex]

r is the radius of the sphere

Differentiating the volume with respect to time;

[tex]\frac{dV}{dt} = \frac{dV}{dr} \times \frac{dr}{dt} \\\frac{dV}{dt} = 4 \pi r^2\frac{dr}{dt}[/tex]

Given the following parameters

dV/dt = 5 cm^3/sec.

r = 10 cm

Substitute into the formula to get dr/dt

[tex]\frac{dV}{dt} = 4 \pi (10)^2 \times \frac{dr}{dt}\\5 = 400 \pi \times \frac{dr}{dt}\\ \frac{dr}{dt}=0.0125 \pi cm/s\\[/tex]

The surface area of the bubble is expressed as:

[tex]S = 4 \pi r^2\\\frac{dS}{dt} = \frac{dS}{dr}\times \frac{dr}{dt}\\ \frac{dS}{dt} =8 \pi r \times 0.0125 \pi\\ \frac{dS}{dt} =\pi ^2 cm^2/s[/tex]

Hence the rate at which the surface area of the bubble is changing at that time is [tex]\pi^2 cm^2/s[/tex]

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Answer:

Step-by-step explanation:

Whats the question???

Answer:

RIP to all those kings!!

Step-by-step explanation:

Answer:

B. 34º

Step-by-step explanation:

So we know that a straight line is equal to 180º and we already have to measure of angle 2. So to find the angle of measure 1, we just subtract 146 from 180.

180 - 146 = 34

So the measure of angle 1 is 34º.

Now, because of alternate exterior angles, we know that they would be the same. SO m∠7 = 34º

The ratio of the number of blue lights to total lights is 3:5

The total number of lights is 190

To solve the problem we need to have the ratios out first.

we have a ratio of blue to white lights as

3 : 2

The ratio of the number of blue lights to white lights would be

114 : x

Such that we would have

3:2 = 114:x

This would give us

[tex]\frac{3}{2 } =\frac{114}{x}[/tex]

We would have to solve for the  value of x

To do this we are to cross multiply

3*x = 114*2

3x = 228

x = 228 / 3

= 76

ratio = 3 + 2 = 5

3 : 5

The proportion that can be used to solve for t is given as 114 : 3 = 38

38 x 5 = 190

or 114 + 76 = 190

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Answer:

77/50 ≈ 1.54

Step-by-step explanation:

A=πr²

A = (22/7)(7/10)²

A = 77/50

A ≈ 1.54

PLEASE MARK IT AS BRAINLIEST

105.1 You simply find the amount fomr each and add them up hope this helped.

Answer:

thx for ur help

that is what the line will look like.

This is a straight line. We only need 2 points to graph a straight line.

Let x = 0

y = -(0) - 1

y = -1

Our first point is (0,-1).

Let x = 1

y = -(1) - 1

y = -2

Our second point is (1,-2).

See attachment for graph.

Answer:

[tex]54-9v[/tex]

Step-by-step explanation:

To remove the parentheses by using the distributive law, we need to multiply [tex]9[/tex] to each term within the parentheses.

[tex]9(6-v) = 9(6) +9(-v)[/tex]

[tex]=54-9v[/tex]

Hope this helps :)

Answer:

2/11

Step-by-step explanation:

thats the probability

Answer:

2/11

Step-by-step explanation:

Perimeter = 2x length + 2x width.

2(2x+3) + 2(x-5) = 44

Simplify:

4x + 6 +2x -10 = 44

Combine like terms:

6x -4 = 44

Add 4 to both sides:

6x = 48

Divide both sides by 6:

X = 8

Now replace x with 8 in the equation for length:

2x + 3 = 2(8) +3 = 16 + 3 = 19 cm

Length = 19 cm

Answer:

CAD = 128

Step-by-step explanation:

Answer:

72 cm^2 OR 72 sq cm.

Step-by-step explanation:

6 x 5 = 30

10 x 3 = 30

2 x 6 = 12

30 + 30 + 12 = 72

Sorry, i don't exactly know how to explain it without drawing it. But i assure you it is correct.

Answer:

200

Step-by-step explanation:

Answer:its a or b

Step-by-step explanatio

Answer:

The answer is (2)

Step-by-step explanation:

We know that to the distance between two numbers on a number line, we subtract the smaller number from the larger number. For instance, the difference between [tex]5[/tex] and [tex]3[/tex] is simply [tex]5-3[/tex], which is [tex]2[/tex]. With that being said, variables such as [tex]p[/tex] or [tex]q[/tex] differ from a question to another. Sometimes, the [tex]p[/tex] is larger, but sometimes the [tex]q[/tex] is. If we don’t know which one is which, we can subtract them in any order and take the absolute value of that result. If the result of subtraction is positive, great! The absolute value of that is still positive ([tex]5-3=2\\|5-3|=2[/tex]) If it’s not, now it is! (e.g., [tex]|3-5|=2[/tex]! Therefore, the answer is (2) [tex]|p-q|[/tex].

Answer:

x>-1

Step-by-step explanation:

your welcome-

work-

Step by Step Solution:

More Icon

Rearrange:

Rearrange the equation by subtracting what is to the right of the greater than sign from both sides of the inequality :

                    (6*x-3)-((4*x-5))>0

Step by step solution :

STEP

1

:

Pulling out like terms

1.1     Pull out like factors :

  2x + 2  =   2 • (x + 1)

Equation at the end of step

1

:

STEP

2

:

2.1    Divide both sides by  2

Solve Basic Inequality :

2.2      Subtract  1  from both sides

           x > -1

Inequality Plot :

2.3      Inequality plot for

        2.000 X  + 2.000  >  0

One solution was found :

x > -1

Answer: x = 14.4

Step-by-step explanation:

Answer:

Step-by-step explanation:

8/x = 5/9     just cross multiply

5x = 8(9)

x = 72/5     divide 5 both sides

x = 14.4

Answer:

congruent angles

Step-by-step explanation:

Because congruent angles mean when two angles have the same measure.

Answer:

number 2 is the answer............

Congruent Angles

Answer:

12√60 - 3√-5 + 8√-24  -2

Step-by-step explanation:

Use the distributive property

Multiply each by the other term outside their parantheses

for example multiply 3√-5 by 4√-12 and 3√-5 by -1.

Answer:

√

28

√

4

=

2

7

⋅

2

√

7

14

√

7

14

√

7

Explanation:

28

is the same as

2

×

14

witch in turn is the same as

2

2

×

7

Write as

7

√

2

2

×

7

Taking the

2

2

'outside' the square root changes it from

2

2

to

2

7

√

2

2

×

7

=

7

×

2

×

√

7

14

√

7

Step-by-step explanation:

Answer:

The total number of weeks Michelle needs to save is 29.

Step-by-step explanation:

Michelle plans to save $1185 in a number of weeks to determine later.

In the first 7 weeks, she will save $45 each week for a total of

$45 * 7 = $315

In the next 8 weeks, she will save $30 each week for a total of:

$30 * 8 = $240

During these 15 weeks, she has saved

$315 + $240 = $555

She still has a remaining $1185 - $555 = $630 to save.

Those $630 will be saved in a number of weeks at $45 per week, thus the number of weeks is:

$630 / $45 = 14 weeks

Total weeks = 15 + 14 = 29

The total number of weeks Michelle needs to save is 29.

Answer:

Diverges

Step-by-step explanation:

Using the ratio test to test the series:

Answer:C

Step-by-step explanation:

Answer:

Step-by-step explanation:

The answer would be C, It would be 300$ an hour and then you multiply that by the amount of weeks you get the number in C.

Answer:

cant help uu :(

Step-by-step explanation:

Answer:

E

Step-by-step explanation:

RSM proves correct

The value of a given function is required.

So, the answer is (E)83.

The given function [tex]f(x)[/tex] is the sum of all prime numbers less than [tex]x[/tex].

The required function is [tex]f(86)-f(82)[/tex]

[tex]f(86)=2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+73+79+83[/tex]

[tex]f(83)=2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+73+79[/tex]

[tex]f(86)-f(83)=2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+73+79+83-(2+3+5+7+11+13+17+19+23+29+31+37+41+43+47+53+59+61+67+71+73+79)=83[/tex]

All numbers become get subtracted except for 83.

So, the answer is (E)83.

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https://brainly.com/question/4450173

Answer:

100$ per month

Step-by-step explanation:

Answer:

0.32989690721

Step-by-step explanation:

Answer:

rounded to the nearest hundred: 0.33

Step-by-step explanation:

hope this helps :3