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Tresset [83]
3 years ago
13

Help me ASAP it’s a math test

Mathematics
1 answer:
expeople1 [14]3 years ago
4 0

Answer:

I would say the last one, bc b Is negative correct?

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Ben has a collection of 240 baseball cards. Of these cards, 30% once played
Luda [366]
Ok so lets start off with calculating the percentage. We have 240 cards so lets find 25% of them so lets use 240 times .25 we get 60 cards then take away 240 - 60 = 180. Next we do the 30% so 240 times .30 would be 72 so take away 180 from 72 thats 108. So there are 108 Houston Astros Cards.
5 0
3 years ago
1-3(x-5)=5x-12/2 <br><br><br>solve this equation​
7nadin3 [17]

Answer:

x= 1/3

Step-by-step explanation:

simplify so you can isolate x quicker: 2x-5=5x-6

subtract 2x from both sides: -5=3x-6

add 6 to both sides: 1=3x

divide both side by the 3 to isolate x: 1/3=x

4 0
3 years ago
Read 2 more answers
The game of American roulette involves spinning a wheel with 38 slots: 18 red, 18 black, and 2 green. A ball is spun onto the wh
solong [7]

Answer:

a)- \frac{1}{19}

b) SD(x) =  0.9986

Step-by-step explanation:

Given data:

Number of slots 38

slots for red ball 18

slots for black = 18

slots for green 2

outcomes       Red      Black or Green

Profit                  1                 -1

P(X)                   18/38       20/38

Expected value of wining,  

E(x) = 1. \frac{18}{38} + (-1) \frac{20}{38} = - \frac{2}{38} = - \frac{1}{19}

B) Standard deviation of winning SD(x)

SD(x) = \sqrt{(1- (-\frac{1}{19})^2 .\frac{18}{38} + (1- (-\frac{1}{19})^2 .\frac{20}{38}}

SD(x) = \sqrt{\frac{360}{361}

SD(x) =  0.9986

3 0
3 years ago
A person stands 10 feet away from the base of a 300-foot office building.
snow_tiger [21]

Answer:

The answer will be A.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How do you solve this y= 6x - 3 y= -3 i need to graph so if you can show how to graph it also
nalin [4]

Answer:

:)

Step-by-step explanation:

y=6x-3

y=-3

-3=6x-3

-3=6x-3

+3     +3

=6x

3 0
3 years ago
Read 2 more answers
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