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sergeinik [125]
3 years ago
10

A basketball court is in the shape of a rectangle. It has a length of (x - 7) meters and a width of (x + 3) meters:

Mathematics
1 answer:
Molodets [167]3 years ago
5 0

Answer:

x2 - 4x - 21

Step-by-step explanation:

Area = (x -7 )(x +3)

= x*x - 7*x + x*3 - 7*3

=x2 - 4x - 21

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paul and sue received a total of $400. The amount received by sue was eighthy dollars less than 3 times the amount received by p
kiruha [24]

Paul $120 Sue $280

120x3=360   360-80=280

3p-80+p=400

4p-80=400

4p=480

p=120    s=280

3 0
3 years ago
If f(x)=3x+5/x, what is f9a+2)<br><br> A. 3(a+2)+8/a+2<br> B. 3(f(a))+5/f(a)+2<br> C. 3a+5/a+2
stira [4]

Answer:

b

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males can be approximated by a norma
skad [1K]

Answer:

(a) Minimum red blood cells 5.744 million cells per micro liter

(b) Maximum red blood cells 5.068 million cells per micro liter.

Step-by-step explanation:

Z-score formula is = \frac{x-u}{Standard deviation}

Z-score = \frac{x-5.5}{0.4}

The value of z-score is 0.61 so then x will be;

x = 5.744

The minimum red blood cells count that can in top is 27% of count which is 5.744 million cells per micro liter.

Z-score = \frac{x-5.5}{0.4}

The value of z-score is 0.14 so then x will be;

x = 5.068

The maximum red blood cells count that can be in top is 14% of count which is 5.068 million cells per micro liter.

6 0
3 years ago
1. Solve the system of equations by graphing:
rjkz [21]

Answer:


Step-by-step explanation:

y = -3x - 3


m = -3_______


b = -3________  

y = 2x + 2


m = 2_______


b = _2_______


SOLVE NOW   :  -3x - 3  = 2x + 2


- 5x = 5

x = -1

subst in y : y = 2(-1)+2 = 0

the solution is : ( - 1 , 0 )

y = -3x- 3 an equation for the line 'red'    

y = 2x+2 an equation for the line 'bleus'


3 0
3 years ago
Solve for x: 3x − 2(6 − x) = 7x + 2(5 + x) − 6
Ugo [173]
X=-4 I hope this helps

3 0
3 years ago
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