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2 years ago

Help me please im not good at math!

Mathematics

2 answers:

ollegr [7]2 years ago

8 0

Answer:

12 ft^2

Step-by-step explanation:

Since the formula to find the area of a circle is already up, we can use that to solve the question.

The image gave us the value of the radius right away, so the question will be a lot easier to solve.

--> The reason why the radius is needed is that the 'r' in the formula means radius. We need the value of the radius to find the area of the circle.

Now, we can just replace r with 2.

--> A = 4 $\pi$

Since the question told us to replace $\pi$ with 3, we can do that.

--> A = 4 x 3

--> A = 12

We can conclude that the area of the circle is 12 ft^2.

vladimir2022 [97]2 years ago

4 0

Answer:

12 square ft

Step-by-step explanation:

As given in the picture, the formula for the area of circles is A = pi*r*r. Since the radius is 2 ft and pi is approximately 3, A = 3*2*2 = 12 square ft.

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What do you know about Mexico? 5 sentences

Paul [167]

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3 years ago

Ms. Brooks put $1200 in a 3 retirement account that offers 8% interest compounded annually. Ms. Brooks makes no additional depos

Leona [35]

Answer:

$1,408.21.

Step-by-step explanation:

Since it is compounded annually we could use the formula

A=Pe^rt

We know that the initial amount she deposits is $1200, as stated by the problem. That is our P.

e is well, the e in your calculator which is approximately: 2.7182818284590452353602874713527

r is the rate which is 8%, although you must convert this into a decimal, which would be 0.08 as your r.

Lastly, t is the time, so in this case, 2 years.

And then plug in the values.

A=1200(e)^(0.08)(2)

A=1200(e)^(0.16)

A=1200(1.173510870991810235018611086892)

A=1,408.2130451901722820223333042704

Now since it is a money problem we must put it in the correct format.

A=$1,408.21

4 0

2 years ago

9th grade alg 1 number 43 and work please!

Darya [45]

Answer:

The rule is y = -7x + 5

→ Other values of x;

-9

→ Other values of y;

5
-2
-9
-12
28
68
-170

Step-by-step explanation:

» Take points (1, -2) and (3, -12) from the table.

☑ General equation of a line is y = mx + c

m is the slope
c is y-intercept

✍ For slope, m :

${ \tt{slope = \frac{ - 12 - 2}{3 - 1} }} \\ \\ { \tt{slope = \frac{ - 14}{2} }} \\ \\ { \tt{m = - 7}}$

✍ For y-intercept, c :

${ \tt{y = mx + c}}$

» Taking point (1, -2):

${ \tt{ - 2 = (1 \times - 7) + c}} \\ { \tt{c = - 2 + 7}} \\ { \tt{c = 5}}$

${ \boxed{ \tt{y = - 7x + 5}}}$

3 0

3 years ago

Read 2 more answers

Which of the following functions is graphed below?

Elza [17]

___________________A

5 0

3 years ago

An amusement park charges one admission price for adults and another admission price for children under 12. The Smoke family has

Alex73 [517]

Let the admission price for adults be 'x' and that of children be 'y'

Equation Formation.
2 x + 3 y = 80............equation(i)
3 x + y = 99.............equation(ii)

y = 99 - 3 x
2 x + 3(99 - 3 x) =80
2 x +297 - 9 x = 80
- 7 x = -217
x = 31

y = 99 - 3x
y = 99 - 3×31
y = 99 - 93
y = 6

Answer ⇒ Adults = $31
Children = $6

8 0

3 years ago