A rectangular field with an area of 5000m^2 is enclosed by 300m of fencing. Find the dimensions of the field? How?

Answers

Answer 1

Answer: area of field=xy=5000
perimeter of field=2(x+y)300
x+y=150
x=150-y
y(150-y)=5000
$y^2-150y+5000=0$
solve it
u get y= 50 or 100
then x=100 or 50
therefore the dimensions are 100m and 50m

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Can someone help me do this ?how do i solve for Y

Answers

7x+5y=20
move y by itself

7x+5y=20
minus 7x from both sides
7x-7x+5y=20-7x
0+5y=20-7x
5y=20-7x
divide both sides by 5
5y/5=(20-7x)/5
y=(20-7x)/5
y=(20/5)+(-7x/5)
$y=4- (7x)/(5)$

ANSWER QUICK!!! What is the slope in the graph? * undefined
m = 1
m = 0
m=-1

Answers

Answer:

m=1

Step-by-step explanation:

tttttttttttttt tttt

1 because there is a point at 1,1 0,0 and -1,-1

For the school recycling project, the seventh grade collected sixteen more than five times as many cans as the eighth grade. The seventh grade collected 251 cans. Select all of the equations that can be used to find the number of cans, c, the eighth grade collected.5c=251−16

5c=251+16

5c+16c=251

5c+16=251
which one?

Answers

251-16=235

235/5=47

so a

Answer:don't know like if you want

Step-by-step explanation: H I H I H I H I

The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference.8/9
1.8
2

Answers

2

Working
The nth term of an arithmetic series is calculated using the formula
nth term= a+ (n-1) d
a= -5, n =10 and nth term in this case is 13
Thus
13= -5 +(10-1)d
13= -5+9d
9d= 18
d = 2

Answer:

Step-by-step explanation:

Working

The nth term of an arithmetic series is calculated using the formula

nth term= a+ (n-1) d

a= -5, n =10 and nth term in this case is 13

Thus

13= -5 +(10-1)d

13= -5+9d

9d= 18

d = 2

Add.
5x^2- 5x+1
2x^2+9x-6

Answers

Answer: C. 7x^2+4x-5

Step-by-step explanation:

Add as you would normally. Exponents can look scary but don’t mind them. First add 5x^2 & 2x^2 to get 7x^2. Then do -5x + 9x. An easier way of doing that would be 9x-5x to get 4x. Lastly do 1 -6 to get 5.

For which equation is a = 4 not the solution? 6a = 24
9a = 36
5a = 54
8a = 32

Answers

5a=54 is not a correct statement. 5x4=20, not 54

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38 is what percent of 40

Carly tried to solve an equation step by step. \qquad\begin{aligned} -4(7j+2)&=10\\\\ \\ 7j+2&=-40&\green{\text{Step } 1}\\\\ \\ 7j&=-42&\blue{\text{Step } 2}\\\\ \\ j&=-6&\purple{\text{Step } 3}\\\\ \end{aligned} −4(7j+2) 7j+2 7j j =10 =−40 =−42 =−6 Step 1 Step 2 Step 3 Find Carly's mistake.

Which function is NOT linear? ☆y=x²+2 ☆y=3x ☆ y = 3x/4 ☆ x - y = 1