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3 years ago

The image point of A after a translation left 3 units and down 1 unit is the point

Mathematics

1 answer:

trasher [3.6K]3 years ago

8 0

Answer:

(-3, 4)

Step-by-step explanation:

First, add 3 to point B's x coordinate:

-6 + 3 = -3

Then, add 1 to the y coordinate:

3 + 1

= 4

So, the coordinates of pre image point A are (-3, 4)

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Arsenic is a compound that occurs naturally in very low concentrations. Arsenic blood concentrations in healthy adults are Norma

DENIUS [597]

Answer:

0.7325 to 5.6675 ug/dl

Step-by-step explanation:

The middle 90% will be 45% above the mean and 45% below the mean. This means

0.5-0.45 = 0.05 and

0.5+0.45 = 0.95

We use a z table. Look in the cells; find the values as close to 0.05 and 0.95 as we can get.

For 0.05, we have 0.0505 and 0.0495; since these are equidistant from 0.05, we use the value between them. 0.0505 is z=-1.64 and 0.0495 is z=1.65; this gives us z=-1.645.

For 0.95, we have 0.9495 and 0.9505; since these are equidistant from 0.95, we use the value between them. 0.9495 is z = 1.64 and 0.9505 is z=1.65; this gives us z = 1.645.

Now we use our z score formula,

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

Our two z scores are 1.645 and -1.645; our mean, μ, is 3.2; and our standard deviation, σ, is 1.5:

$1.645=\frac{X-3.2}{1.5}$

Multiply both sides by 1.5:

$1.5(1.645)=\frac{X-3.2}{1.5}\times 1.5\\\\2.4675 = X-3.2$

Add 3.2 to each side:

2.4675+3.2 = X-3.2+3.2

5.6675 = X

$-1.645=\frac{X-3.2}{1.5}$

Multiply both sides by 1.5:

$1.5(-1.645)=\frac{X-3.2}{1.5}\times 1.5\\\\-2.4675=X-3.2$

Add 3.2 to each side:

-2.4675+3.2 = X-3.2+3.2

0.7325 = X

Our range is from 0.7325 to 5.6675.

5 0

3 years ago

The mean percentage of a population of people eating out at least once a week is 57% with a standard deviation of 3.5%. Assume t

Musya8 [376]

Answer:

55.89 % < X < 58.11%

Step-by-step explanation:

We have a Normal Curve.

P( L < Z < U ) = 95%

Two-tailed Confidence Interval.

L is above the 2.5%, so L = -1.96 from the chart

U is below the 2.5%, so U = 1.96

P( - 1.96 < Z < 1.96) = 95%

[(x - 57) / 3.5 ]* root(40) = -1.96

X = 55.915 Lower

(U - 57) / 3.5 *root(40) = 1.96

U - 57 = 1.96*3.5/root(40) = 1.08466

U = 58.084

so, from 55.9 < X < 58.1

6 0

4 years ago

The cost of 1 movie ticket is $7.50. The cost 2 movie tickets is $15.based on this constant rate of change what is the cost of 4

yaroslaw [1]

The cost of 4 tickets is 30 dollars 4 x 7.50 = 30

3 0

4 years ago

HELP ME PLEASE I DO NOT UNDERSTAND PLEASE THANK YOU HAVE A GOOD DAY

Vanyuwa [196]

You can draw a rectangular prison not to scale and just label these on the prism length= 3 width= 9 and height =27
Then you would draw a net the rectangular prism like if you were to unfold it then use the calculation from a and solve for the surface area
Then you add the surface areas together I believe sorry if I get this wrong and it should be the surface area of everything

6 0

4 years ago

I will mark brainliest

lys-0071 [83]

Answer:

754%

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers