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solong [7]
2 years ago
12

Please help and thank you

Mathematics
1 answer:
Vlada [557]2 years ago
3 0

Answer:

D

Step-by-step explanation:

Lisa wants to spend less than 200 dollars, and has already spent 125.74. She also wants to buy as many shirts that cost 20.35 dollars as possible.

Each shirt costs 20.35, and Lisa want to buy as many shirts as possible. Having "shirts" = x, it'd be 20.35x + 125.74 < 200.

20.35 = How much each shirt costs

X = How many shirts she can buy

125.74 = How much she has already spent

200 = Her limit on how much she can spend.

Hope this helps!

Please correct me if I've done anything wrong, and feel free to elaborate if you feel like I haven't explained something clearly!

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Find the product.<br> (z + 3i)(z − 3i)
Doss [256]

Answer:

First, we use distributive property:

(z+3i)(z-3i)=z^2-3zi+3zi-9i^2

Now, remember that i^2=-1, then

z^2-3zi+3zi-9i^2=z^2-9(-1)=z^2+9

Then,

(z+3i)(z-3i)=z^2+9

8 0
2 years ago
The volume (V) of a sphere varies directly with the cube of its radius (r). If k is the constant of proportionally, which is the
Olegator [25]
This should be relatively easy, since most of us have learned and used the formula for the volume of a sphere:  V = (4/3)* pi* r^3.

Just combine (4/3)pi into a single value, k, which results in   V = kr^3.
5 0
3 years ago
What is the distance between the following points?
timama [110]

Answer:

D. d = \sqrt{58}

Step-by-step explanation:

Use the distance formula: d = \sqrt{(x2 - x1)^{2}+ (y2 - y1)^{2}  }

The two points are (6, -2) and (3, -9)

Plug the values into the formula:

d = \sqrt{(3 - 6)^{2}+ (-9 + 2)^{2}  }

Simplify

d = \sqrt{(-3)^{2}+ (-7)^{2}  }

d = \sqrt{9+ 49  }

d = \sqrt{58}

I hope this helps :))

5 0
3 years ago
In a factory a manager tests 250 products and find defcts in 7 of them how many defcts are likely going to be in 10000 unit orde
Kisachek [45]
So first you take 7/250*x/10000 and you cross multiply. Then you get
70000=250x
and the answer is 
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I hope this helps!!!!!!!
7 0
3 years ago
0.034 is 1/10 of 0.0034
torisob [31]

False, .0034 is 1/10 of .034

4 0
3 years ago
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