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Serggg [28]
4 years ago
10

PLEASEE HELP ANYONE

Mathematics
1 answer:
jeyben [28]4 years ago
6 0
We notice there are 4B and 4G (shown in the photo)

P(picking 1st a Green) = 4/8 (having picked a green -and not replacing it- the remaining number of marbles is 3G + 4B)

P(picking 2nd a Green) =3/7

P(picking 1st green AND picking 2nd Green )=(4/8) x (3/7) = 12/56≈ 0.21=21%
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Solve the following quadratic equation:
Advocard [28]

Answer:

-3.5 or -6

Step-by-step explanation:

2x^2+19x+40=-2

2x^2+19x+40+2=0

2x^2+19x+42=0

2x^2+(12+7)x+42=0

2x^2+12x+7x+42=0

2x(x+6)+7(x+6)=0

(x+6)(2x+7)=0

either,

x+6=0

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4 0
3 years ago
WILL MARK BRAINLEST IF CORRECT HELP ME OUT
sveta [45]

Answer:

x = 12

Step-by-step explanation:

Equation:    0.52(x) + 0.72(4) = 0.57(x + 4)

0.52(x) + 0.72(4) = 0.57(x + 4)             \longmapsto         Multiply

0.52x + 2.88 = 0.57x + 2.28               \longmapsto         Subtract 0.52x from both sides

2.88 = 0.05x + 2.28                            \longmapsto         Subtract 2.28 from both sides

0.6 = 0.05x                                          \longmapsto        Divide all sides by 0.05

 

x = 12

-Chetan K

6 0
2 years ago
I need to finish this Monday. I missed the lesson. I don't know what to do. We have to answer them with pattern blocks. The thir
ladessa [460]

Have you tried to look at the links?

respond with info.

3 0
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krok68 [10]

Answer:

1.75

Step-by-step explanation:

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