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OleMash [197]
4 years ago
14

Do you know the answer??

Mathematics
1 answer:
Oksana_A [137]4 years ago
6 0
I think the answer is A.
You might be interested in
A soccer field has a perimeter of 326 metres. Its area is 6370 square metres. What are the dimensions of the field?
Burka [1]

Answer:

Step-by-step explanation:

chiều dài:x,x>0

chiều   rộ:y

\left \{ {({x+y)*2=326} \atop {xy=6370}} \right.

\left \{ {{x+y=163} \atop {xy=6370}} \right.

\left \{ {{y=163-x} \atop {xy=6370}} \right.

\left \{ {{y=163-x} \atop {x*(163-x)=6370}} \right.

\left \{ {{y=163-x} \atop {163x-x^{2} =6370}} \right. \\

\left \{ {{y=163-x} \atop {x_{1} =98; x_{2} =65}} \right.

\left \{ {{y=65} \atop {x=98}} \right.

4 0
3 years ago
A company employs 48 people in various departments. The average annual salary of each employee is $25,000 with a maximum varianc
n200080 [17]
Given:
n = 48, the sample size
m = $25,000, th sample mean
σ = $3000, the maximum variance

The standard deviation is
s = √σ = √(3000) = 54.772

As a rule of thumb, the range is 4 times the standard deviation. Therefore the range is
R = 4*54.772 = 219.09
Half the range is
R/2 = 219.09/2 = 109.45

The required  range is
(25000-109.45, 25000+109.45) = (24890.46, 25109.54)

Answer: ($24,890.46, $25,109.54)

3 0
3 years ago
HELP ME PLS I will mark brainiest if i can!<br> qr + r; use q = 3, and r = -6
djyliett [7]

Answer:

-24

Step-by-step explanation:

3(-6)+-6

-18+-6

-24

Hope it helps. Please mark as brainliest.

7 0
3 years ago
Read 2 more answers
Y=-4x+2 <br> X. Y<br> -1<br> 0<br> 1<br> 2
vovikov84 [41]
Y = -4x+2
x = -1 
-4(-1) + 2 = /// 6 = y

x = 0 
-4(-1) + 2 = /// 2 = y

x=1 
-4(1) + 2 = /// -2 = y

x=2 
-4(2) + 2 /// -6 = y
8 0
3 years ago
Find three solutions for this linear function and choose the correct graph by clicking on it. F -1(x) if F(x) = x + 3
algol13

Answer:

[1,2], [2,1], [3,0]

Step-by-step explanation:

To find F-1(x) if F(x)=x+3 we just need to put -x instead of x.

From our graph(attached) we multiply any three solutions by a -1:

F-1(x)\\\\#For \ x=1\\F-1(1)=-1+3=2\\\\#For \ x=2\\F-1(2)=-2+3=1\\\\#For \ x=3\\F-1(3)=-3+3=0

Hence, the 3 solutions are [1,2],[2,1],[3,0]

3 0
3 years ago
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