My brain doesn't feel like working today ;-;

I just need the equation, not the answer
My brain doesn't feel like working today ;-; I just - 1

Answers

Answer 1
Answer:

Answer:

area = lengh x width   is that enough of the formula? :D

Step-by-step explanation:

I'll give you the rest,  just in case :P  My brain got tired at the break before spring, here is the rest

400 = (L+30) X w

400 = 10+30 x 10  ( just b/c I can see 40 x 10  would be 400, calculus could also figure this out for us, but... that would be the minimum fencing he needs to buy and this questions isn't asking that, just make it fit on the back of his house, which we are not given, so just make up something, I used 10 b/c it was convenient )

400 = 40 x 10

2 sides are 40 , and one side is 10

so 90' of fence is needed

 


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nadia wants to enclose a square garden with fencing has an area of 141 ft.² to the nearest foot how much fencing will she need explain

Answers

We know that area of the square is 141 square feet. Therefore, we can figure out the dimension of square using formula for area as shown below:

Area=a^(2)\n141=a^(2)\na=√(141)=11.874

We know that fencing is used along the sides of the square. Therefore, amount of fencing required will be equal to perimeter of square.

Hence, we can write:

\text{Amount of fencing}=\text{Perimeter of square}

\text{Amount of fencing}=4a=4(11.874)=47.496

Upon rounding to nearest foot, we get the amount of fencing required as 48 feet.

What’s the perimeter and area?

Answers

Answer:

Perimeter= 34a

Area= 42a

Step-by-step explanation:

Perimeter: 3a + 3a + 3a+ 3a +3a + 5a +5a + 9a = 34a

Area: (3a x 9a) + (3a x 5a) = 42a

A deer population is estimated to be 4,350. The growth rate of the population is given by the equation y=4350(1.07) . What is the percent rate of growth of the deer population?43.5%

107%

7%

0.07%

Algebra 2

Answers

Answer:

Step-by-step explanation:

Analyzing the growth rate of 1.07:

If the growth rate is a number greater than 1, we have exponential growth; if the growth rate is a number greater than 0 but less than 1, we have exponential decay.

Our growth rate is actually growth.  But the rate of growth is not 107%.  The rate of growth means that we already had 100% of the population and that it is growing by 7% each year.  100% + 7% = 107%; as a decimal, 1.07

So the rate of growth is 7%

The work of a student to solve a set of equations is shown:Equation 1: m = 8 + 2n
Equation 2: 3m = 4 + 4n



Step 1:
−3(m) = −3(8 + 2n) [Equation 1 is multiplied by −3.]
3m = 4 + 4n [Equation 2]

Step 2:
−3m = −24 − 6n [Equation 1 in Step 1 is simplified.]
3m = 4 + 4n [Equation 2]

Step 3:
−3m + 3m = −24 − 6n + 4n [Equations in Step 2 are added.]

Step 4:
0 = −24 − 2n

Step 5:
n = −12


In which step did the student first make an error?

Step 4

Step 3

Step 2

Step 1

Answers

Answer:

Step 3

Step-by-step explanation:

Hello

the student made a mistake in the step number 3.

let´s see

in the step number 1 he multiplied by -3 in order to add this new equation with  equiation 2 and then eliminate the terms with m

Step one

-3(m)=-3(8+2n)

-3m= -24 - 6 n,  it is ok

in step two he simplified, he did it well.

in the step 3  he added the equations

 -3m = -24-6n

  3m = 4   +4n

_____________

    0   = -20-2n

he did not add properly -24+4, here , he made his first mistake.

step 4 is already wrong

continuing..to find n

0= -20-2n

20=-2n

n=-10

Have a great day

 

I think the student first made an error on step 1 because why is it multiplied by -3. To be more precise, where did the student get the -3 from?

Solve x²-121=0
Answer choices
0
-11
11
11,-11

Answers

answer is 11,-11

x²-121=0
x²- 11²=0
(x +11)(x-11) = 0
x + 11 = 0 then x = -11
x - 11 = 0 then x = 11

Answer:

D) 11,-11

Step-by-step explanation:

HELP ME PLEASE?? I neeed help

Answers

a. That prism is composed of two similar triangles and 3 different rectangles. The area of a triangle is A = (base*height)/2. The area of a rectangle is A = length*width.

Surface area = 2*[(16*12)/2] + 32*20 + 12*32 + 16*32 = 1728 cm^2

b. The surface area of a cone is A = pi*radius*length
A = pi*9*19 = 537 yd^2