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balu736 [363]
2 years ago
9

Please help me! I need an answer as soon as possible!

Mathematics
1 answer:
blagie [28]2 years ago
6 0

Answer:

It should just be the radius

Step-by-step explanation:

The radius is half the diameter of the circle and all you’re doing is taking the radius multiple times

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The school wishes to purchase 2500 pens and have discovered that 3 stores sell the same model pen.Which store has the best buy ?
8_murik_8 [283]
Store\ A:  \frac{0.5}{15}=0.0333\ cents\ per\ pen \\  \\ Store\ B: \frac{1.7}{50}=0.034\ cents\ per\ pen \\  \\ Store\ C: \frac{0.9}{30} =0.03\ cents\ per\ pen \\  \\ Store\ C\ is\ the\ cheapest.
7 0
3 years ago
Evaluate the function f (x)= x squared -4x+1 at the given values of the independent variable and simplify.
Ivan
<h3>Given</h3>

... f(x) = x² -4x +1

<h3>Find</h3>

... a) f(-8)

... b) f(x+9)

... c) f(-x)

<h3>Solution</h3>

In each case, put the function argument where x is, then simplify.

a) f(-8) = (-8)² -4(-8) +1 = 64 +32 + 1 = 97

b) f(x+9) = (x+9)² -4(x+9) +1

... = x² +18x +81 -4x -36 +1

... f(x+9) = x² +14x +46

c) f(-x) = (-x)² -4(-x) +1

... f(-x) = x² +4x +1

8 0
3 years ago
What number does y stand for in this equation?<br> 2y - 7 = 35
timama [110]

Answer:

y stands for 21 in this equation.

Step-by-step explanation:

2y - 7 = 35

2y = 42

y = 21

3 0
3 years ago
Read 2 more answers
the perimeter of a rectangular field is (16a+8b-6c) units and one of its side is (5a+3b-4c) find the other side
Jet001 [13]

3a+b+c


The perimeter is two times one side (to account for the opposite) and two times the adjacent side. So if the sides would be x and y, the perimeter would be 2*x + 2*y.

So, knowing that the sum is 16a+8b-6c, if we subtract the given side 5a+3b-4c from this, what remains is two times the "other" side:

16a+8b-6c - 2*(5a+3b-4c) =

16a+8b-6c -10a-6b+8c =

6a+2b+2c

half of that is

(6a+2b+2c)/2 = 3a+b+c

7 0
2 years ago
Can anyone help me on my HW i can't seem to find the answer to it and when i do it doesn't make sence
Nadusha1986 [10]
0.75x-18.5=0.65x
0.75x-0.65x=18.5
0.1x=18.5
x=18.5/0.1=185

Answer: x=185

To checkt:
0.75(185)-18.5=138.75-18.5=120.25
0.65(185)=120.25
4 0
3 years ago
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