2 years ago

Y = -3x + 4 y = 3x - 21

Mathematics

1 answer:

Sladkaya [172]2 years ago

8 0

Answer:

x=4 1/6 y=-3 1/2

Step-by-step explanation:

You might be interested in

5/6 multiplied by y =25

Svetach [21]

5/6×y=25 Y= -5/6+25 Y = 24.16667 or 24 1/6

7 0

3 years ago

Simplify a? 3bº о a? 966 O 966

pickupchik [31]

Answer:

its b i think

Step-by-step explanatioits n:

bye :)

6 0

2 years ago

Can someone help me with all of this

Yakvenalex [24]

The first one is 52 because if you toke 80 and subtract it by28 it will give you x witch is 52 s=52

6 0

3 years ago

Can u simplify 66/90

vova2212 [387]

Answer:

Step-by-step explanation:22/ 30 just divide by 3

3 0

3 years ago

Read 2 more answers

Laboratory experiment shows that the life of the average butterfly is normally distributed with a mean of 18.8 days and a standa

inessss [21]

Answer:

a) 0.4164

Step-by-step explanation:

Mean lifespan (μ) = 18.8 days

Standard deviation (σ) = 2 days

For any given lifespan 'X', the z-score is:

$z=\frac{X- \mu}{\sigma} \\z=\frac{X- 18.8}{2}$

For X=12.04 days:

$z=\frac{12.04 - 18.8}{2} \\z=-3.38$

A z-score of -3.38 falls in the 0.036-th percentile of a normal distribution.

For X=18.38 days:

$z=\frac{18.38 - 18.8}{2} \\z=-0.21$

A z-score of -3.38 falls in the 41.68th percentile of a normal distribution.

The probability that a butterfly lives between 12.04 and 18.38 days is

$P=41.68-0.036\\P=41.64\%\ or\ 0.4164$

6 0

3 years ago