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3 years ago

I really need some help............!!!!!!!!!

Mathematics

2 answers:

Marat540 [252]3 years ago

7 0

Answer:

1.25

Step-by-step explanation:

Dmitrij [34]3 years ago

3 0

Answer:

1.25 cm

Step-by-step explanation:

The blow up snow flake is 15 cm

The blow up ratio is 12 to 1

Divide the 15 cm by 12 to determine the size in real life

15/12 =1.25 cm

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20 POINTSSS AND I WILL GIVE BRAINLIEST !!

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2 years ago

Factor 12y^2 + 5y - 2 completely.

guapka [62]

So the right answer is of option C.

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3 years ago

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17% of students in a class have brown hair. If 6 students are chosen at random, what is the probability that exactly 3 have brow

dezoksy [38]

Answer:

6.8%

Step-by-step explanation:

the question has no information about class size (no. of student in class)

assume no. of student is infinite

P(3brown out of 6) = 6C3 * P(brown)^3 * P(not brown)^3

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3 0

2 years ago

Please help

taurus [48]

Answer:

Slope = 2

Step-by-step explanation:

(1,3) and (3,7)

m = (7-3)/3-1)

= 4/2

= 2

5 0

2 years ago

PLEASE HELP!! I WILL BRAINLIEST

ArbitrLikvidat [17]

Answer:

81.8%

Step-by-step explanation:

Mean = $\mu = 40$

Standard deviation = $\sigma = 5$

Now we are supposed to find out what percent of the numbers fall between 35 and 50

$z = \frac{x-\mu}{\sigma}$

Substitute the values

$z = \frac{x-40}{5}$

Now for P(35<x<50)

Substitute x = 35

$z = \frac{35-40}{5}$

$z =-1$

Substitute x = 50

$z = \frac{50-40}{5}$

$z =2$

So, P(-1<z<2)

P(z<2)-P(z<-1)

=0.9772-0.1587

=0.8185

= $0.818 \times 100$

=81.8%

Hence 81.8% percent of the numbers fall between 35 and 50

7 0

3 years ago